How does water temperature affect chemical sanitizers?
Answers
Sanitizers typically operate at temperatures from 75°F and 120°F.Chlorine compounds can corrode some metal objects at higher temperatures.
Which are some of the elements that influence how chemical sanitizers work?Temperatures, pH, relative humidity, & water hardness are other physical and chemical variables that affect disinfection processes.
Does the temperature affect how well a chemical sanitizing solution works?Solutions containing chlorine for sanitizing must have a lowest temperature of 75°F.At lower temperatures, they perform worse.Chlorine can evaporate from of the solution and damage some metals at temperatures higher that 120°F.Generally speaking, all sanitizers function best between 75° & 120°F.
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Related Questions
Question 3 (5 points) (02.06 MC) The table compares some characteristics of two atoms_ Charged Particles Atom Number 0f Neutrons Mass Number] Use the table t0 determine the number of protons for each atom: Then_ choose the statement below that Is true about the two atoms_ points) Atom X and Atom are in the same row; but not the same family; on the periodic table Atoms X and Atom Y are in the same family; but not the same row; in the periodic table; Atom Xis in a column to the right of Atom Y in the periodic table: Atom X and Atom occupy the same position in the periodic table because they are isotopes'
Answers
Atoms are basically the smallest units of matter. They are made up of protons, neutrons and electrons.
What is the Periodic table?The periodic table is a tabular arrangement of the chemical elements which are organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. The periodic table lists the elements in order of increasing atomic number and grouped into rows (periods) and columns (groups). The elements in the same column have similar chemical properties, with the elements in the same row having similar outer electron configurations.
Atom X: Number of protons = 6
Atom Y: Number of protons = 6
b. Atoms X and Atom Y are in the same family; but not the same row; in the periodic table.
Hence, Option B is correct.
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The question is:
Question 3 (5 points) (02.06 MC) The table compares some characteristics of two atoms_ Charged Particles Atom Number 0f Neutrons Mass Number] Use the table t0 determine the number of protons for each atom: Then_ choose the statement below that Is true about the two atoms_ points) Atom X and Atom are in the same row; but not the same family; on the periodic table Atoms X and Atom Y are in the same family; but not the same row; in the periodic table; Atom Xis in a column to the right of Atom Y in the periodic table: Atom X and Atom occupy the same position in the periodic table because they are isotopes.
15. Convert 24 mi/hr to ft/min
Answers
Barium nitrate and sodium sulfate solutions can be used to precipitate barium sulfate. How many grams
of sodium sulfate should a chemist use to completely react with 75.0 grams of barium nitrate? How many
grams of precipitate will be formed?
Answers
Answer:
40.8g of sodium sulfate must be added
Explanation:
The reaction of barium nitrate, Ba(NO₃)₂ with sodium sulfate, Na₂SO₄ is:
Ba(NO₃)₂ + Na₂SO₄ → 2 NaNO₃ + BaSO₄(s)
That means, for a complete reaction of an amount of barium nitrate you must add the same amount in moles of sodium sulfate. To solve this problem we need to convert the mass of barium nitrate to moles = Moles of sodium sulfate that must be added:
Moles Ba(NO₃)₂ -Molar mass: 261.3g/mol-:
75g * (1mol / 261.3g) = 0.287 moles = Moles Na₂SO₄
Mass Na₂SO₄ -Molar mass: 142.04g/mol-:
0.287 moles * (142.04g / mol) =
40.8g of sodium sulfate must be addedA certain man needed 400N of force to pull a load through a distance of 150cm in 8s . Calculatell i) the work done by man ii) the power developed by man
Answers
Answer:
a) 600 J
b) 75 W
Explanation:
Force= 400 N, distance = 150 cm = 1.5 m, time= 8s
a) Work is the product of force acting on an object and distance (or displacement). The S.I unit of work is the joules.
Work = force × distance = 400 × 1.5 = 600 J
b) Power is the amount of energy transferred per unit time. It is the ratio of work to time. The S.I unit of power is watt
Power = work/time = 600 / 8 = 75 W
Who's model was titted the atomic theory of matter"? *
Answers
Answer:
John Dalton
Explanation:
Answer:
John Dalton, an English chemist, inferred that atoms had certain characteristics. He began to propose an atomic the- ory and model for atoms. The main ideas of Dalton's theory are summarized in Figure 2. With only a few changes, Dalton's atomic theory is still accepted today.
Explanation:
2. A clear, colorless liquid is mixed with a clear, blue liquid resulting in a white powder suspended in a clear,
colorless liquid. Has a chemical reaction occurred? Why or why not?
Answers
Answer:
Yes, a chemical reaction has occurred
Explanation:
A chemical change is known to lead to the appearance of a new substance. Another name for chemical change is chemical reaction.
The new substance is formed when the bonds in the reactants are being rearranged to yield the products of the reaction.
In this case, two clear liquids were mixed and the contents of the system interacted briefly to yield a new product which appears as the white powder suspended in a clear, colorless liquid.
2(t. A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6"C. Determine thetemperature at which the volume of the gas is 3.45 L.a) 309 K b) 281 K e) 20,6 K d) 294 K e) 326 K
Answers
They tell us that the pressure of the gas is constant and the temperature and volume vary. If we assume that the gas behaves like an ideal gas, we can apply Charles's law, which tells us:
\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)where,
V1 is the initial volume, 3.62L
T1 is the initial temperature, 21.6°C=294.75K
V2 is the final volume, 3.45L
T2 is the final temperature, in Kelvin
Now, we clear T2 and replace the known data:
\(T_2=V_2\times\frac{T_1}{V_1}\)\(T_2=3.45L\times\frac{294.75K}{3.62L}=281K\)The temperature at which the volume of the gas is 3.45 L will be 281K
Answer. b) 281K
What happens on an atomic level when a reaction between two elements such as sodium and chlorine results in two oppositely charged ions?.
Answers
The sodium atom loses an electron to the chlorine atom. The sodium atom becomes positive ion. The chlorine atom then becomes the negative chloride ion.
On an atomic level when the reaction takes place between two elements such as sodium and the chlorine result in two oppositely charged ions is they combine to form the an ionic compound, sodium loses its one electron to chlorine so chlorine gains the one electron.
A white, crystal-like ionic compound called the sodium chloride (NaCl) is used to flavor the food.
It is composed of a chloride anion (Cl-) and a sodium cation (Na+).
Due to the fact that it is made up of two substances with distinct electronegativities, it is categorized as an ionic compound.
It forms a chloride ion and forms the ionic compound sodium chloride.
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12
How many electrons shells would an atom of Sulfur have?Locate on your Periodic Table*
(5 Points)
03
6
16
O 32
13
Answers
1. For each statement, circle T
or F for true or false. In each
blank, write the number of the
SENTENCE that gives the best
evidence for the answer.
a. Frogs, lily pads, and fish are
parts of a pond community.
T. Or. F. Sentence ________
b. An ecosystem includes only a
living things.
T. Or. F. Sentence ________
c. All the barn owls in a state
park make up a population of
owls.
T. Or. F. Sentence ________
d. Squirrels and mice are two
different populations of
animals.
Τ. Or. F. Sentence ________
e. A desert community is made up
of cactus, sand, and camels.
Τ. Or. F. Sentence ________
f. A desert ecosystem can
include cactus, sand, and
camels.
T. Or. F. Sentence ________
2. What is the most likely
meaning of interact as it is
used in sentence 8?
a. affect each other
b. grow together
c. reproduce
d. breathe
Write the number of the other
sentence (not sentence 8) that
gives the best evidence for the
answer.
3. Name an ecosystem.
__________________________
List 5 populations of organisms you
would expect to find in it
___________________________
___________________________
___________________________
___________________________
___________________________
4. A taiga is an ecosystem that
is cold in the winter, cool in
the summer, has little rainfall,
and supports evergreen trees,
moose, and weasels. Which other
ecosystem does it most resemble?
__________________________
5. Complete the diagram below
to compare the populations in
the desert and the rain forest
ecosystems.
COMPARING ECOSYSTEMS
Reason for comparing:
Know more about the populations
What is being compared?
____________ vs ___________
How same?
___________
___________
___________
___________
VS.
How different?
___________
___________
___________
___________
Conclusion
____________________no
Answers
A taiga is an ecosystem that is cold in the winter, cool in the summer, has little rainfall, and supports evergreen trees, moose, and weasels, this ecosystem most resembles the boreal forest ecosystem.
The ecosystema. Frogs, lily pads, and fish are parts of a pond community.
True. Sentence 3.
b. An ecosystem includes only living things.
False. Sentence 4.
c. All the barn owls in a state park make up a population of owls.
True. Sentence 2.
d. Squirrels and mice are two different populations of animals.
True. Sentence 6.
e. A desert community is made up of cactus, sand, and camels.
False. Sentence 5.
f. A desert ecosystem can include cactus, sand, and camels.
True. Sentence 8.
2. The most likely meaning of interact in sentence 8 is option a. affect each other.
Sentence 9 gives the best evidence for this answer.
3. An example of an ecosystem is the Amazon Rainforest.
5 populations of organisms you would expect to find in it are:
JaguarsToucansSlothsMacawsTapirs4. A taiga is an ecosystem that is cold in the winter, cool in the summer, has little rainfall, and supports evergreen trees, moose, and weasels.
The taiga ecosystem most resembles the boreal forest ecosystem.
COMPARING ECOSYSTEMS
What is being compared is:
Desert vs Rainforest
Their similarities are:
Both have diverse plant and animal species.Both are ecosystems.Their differences are:
Desert has sparse vegetation, while rainforest has dense vegetation.Desert has extreme temperature variations, while rainforest has a relatively stable climate.Desert has limited water availability, while rainforest has high rainfall.In conclusion, the desert and rainforest ecosystems differ significantly in terms of vegetation, climate, and water availability.
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1.
a. True. Sentence 1.
b. False. Sentence 2.
c. True. Sentence 3.
d. True. Sentence 4.
e. False. Sentence 5.
f. True. Sentence 6.
2. The most likely meaning of interact as it is used in sentence 8 is "affect each other." Sentence 7 provides the best evidence for this answer, stating that "the living and nonliving things in an ecosystem depend on each other."
3. Rainforest is an ecosystem. Five populations of organisms that can be found in a rainforest include:
TreesBirdsInsectsReptilesAmphibians4. A taiga ecosystem most resembles a tundra ecosystem.
5. The following diagram compares the populations in the desert and the rain forest ecosystems:
COMPARING ECOSYSTEMS
Reason for comparing: Know more about the populations
What is being compared?We are comparing Desert vs. Rain forest
How same?
Firstly, the dryness typical of desert conditions characterize these environments alongside sparse rainfall which contrast significantly with the constant wetness experienced in the tropical setting of the Rainforest regime . This also reflects on temperatures as while desert areas experience scorching heat during daytime periods, they also have incredibly chilly nights unlike areas inhabited by Rainforests which tend to maintain moderate- warm daytime climate tempered by cool nighttime weather. They also differ strikingly when it comes to soil texture ;desert soils lean toward sandiness whereas those found within tropical regions such as Rainforests tend to possess nutrient-rich quality.Habitat wise, Rainforests typically host a diverse range of tree species while deserts have fewer to no trees.Learn about ecosystem here https://brainly.com/question/30187156
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I really need help guys in order to pass this. its kinda urgent!
Answers
What is the chemical composition of dry ice?
Answers
Answer:
Dry ice is the solid form of carbon dioxide (CO 2), a molecule consisting of a single carbon atom bonded to two oxygen atoms. Dry ice is colorless, odorless, and non-flammable, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H 2 CO 3).
Explanation: i asked my teacher and this was her response.
Please answer this...
Answers
777 L SO2 * 1 mol SO2 / 22.4 L SO2 * 1 mol CO2 / 2 mol SO2 * 22.4 L CO2 / 1 mol CO2 = 388.5 L CO2
what viral components might serve as good targets for the design of antiviral chemicals?
Answers
1. Balance the following equation and use calculations for average atomic masses to show that
both sides of the equation have equal masses. This style of problem was covered in Live Lesson.
Show your work. (4 pts)
Mg(OH)2(aq) + HCl(aq) MgCl2(s) + H₂O(I)
Answers
First, let's balance the chemical equation:
Mg(OH)2(aq) + 2 HCl(aq) → MgCl2(s) + 2 H2O(l)
Now, let's calculate the molar masses of the compounds involved using the average atomic masses from the periodic table:
Molar mass of Mg(OH)2 = (1 x atomic mass of Mg) + (2 x atomic mass of O) + (2 x atomic mass of H)
= (1 x 24.31 g/mol) + (2 x 15.999 g/mol) + (2 x 1.008 g/mol)
= 58.33 g/mol
Molar mass of HCl = (1 x atomic mass of H) + (1 x atomic mass of Cl)
= (1 x 1.008 g/mol) + (1 x 35.453 g/mol)
= 36.46 g/mol
Molar mass of MgCl2 = (1 x atomic mass of Mg) + (2 x atomic mass of Cl)
= (1 x 24.31 g/mol) + (2 x 35.453 g/mol)
= 95.21 g/mol
Molar mass of H2O = (2 x atomic mass of H) + (1 x atomic mass of O)
= (2 x 1.008 g/mol) + (1 x 15.999 g/mol)
= 18.02 g/mol
Now, let's calculate the total mass on both sides of the equation:
Left side:
Mg(OH)2(aq) + 2 HCl(aq)
Molar mass of Mg(OH)2 = 58.33 g/mol
Molar mass of HCl = 2 x 36.46 g/mol = 72.92 g/mol
Total mass on left side = 58.33 g/mol + 72.92 g/mol = 131.25 g/mol
Right side:
MgCl2(s) + 2 H2O(l)
Molar mass of MgCl2 = 95.21 g/mol
Molar mass of H2O = 2 x 18.02 g/mol = 36.04 g/mol
Total mass on right side = 95.21 g/mol + 36.04 g/mol = 131.25 g/mol
As we can see, the total mass on both sides of the equation is equal (131.25 g/mol), which demonstrates that both sides of the equation have equal masses, satisfying the law of conservation of mass.
Write in standard notation 6.078 x 10 expo 3
Answers
Answer:
6078
Explanation:
How many electrons does each atom have? What group is each in?
Answers
In an atom, the electron's spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell, three can hold a maximum of eight electrons. ( This is the answer to both questions!)
Who is it the scientific
Answers
Answer: sorry for a late answer but it would be JJ Thompson
Explanation:
How would the system change if the container were placed on a hot plate? some kinetic energy would be produced. Some kinetic energy would be destroyed. The kinetic energy of the molecules would increase. The kinetic energy of the molecules would decrease.
Answers
If a container is placed on a hot plate, the kinetic energy of molecules inside the container will increase.
It is a fundamental theory of thermodynamics that energy cannot be produced and neither be destroyed. So obviously from the fundamental theorem of thermodynamics, the first two options in the given question ( some kinetic energy would be produced and some kinetic energy would be destroyed ) are obviously wrong.
Since the container is placed on a hot plate, the heat energy will get transferred from the plate to the container, and hence the molecules inside the container will get heated and excited. Therefore the kinetic energy of molecules inside the container will increase.
So basically, in this case, the heat energy of the plate is converted to the kinetic energy of molecules inside the container.
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which of the following substances would undergo dissociation when placed into a polar solvent? question 1 options: c6h12o6 h2o2 mgcl2 co2
Answers
The substance that would undergo dissociation when placed into a polar solvent is option C which is MgCl2.
Dissociation explained.
Dissociation refers to the separation of a molecule or compound into smaller particles, such as ions or radicals, usually in a solvent or under the influence of a certain energy input, such as heat or light.
In the context of chemistry, dissociation often refers to the separation of an ionic compound into its constituent ions in a solvent, such as water
MgCl2 is an ionic compound that consists of Mg2+ cations and Cl- anions. When this compound is placed in a polar solvent, such as water, the polar water molecules surround the ions and separate them from one another, resulting in the dissociation of the compound into its constituent ions.
Therefore, other substances listed, C6H12O6 (glucose), H2O2 (hydrogen peroxide), and CO2 (carbon dioxide), are not ionic compounds and do not dissociate into ions when placed in a polar solvent. Glucose and hydrogen peroxide are polar molecules, but they do not ionize in water. Carbon dioxide is a nonpolar molecule and is insoluble in water.
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what isotope remains after the ii -131 decays? what isotope remains after the -131 decays? 13052te52130te 13053i53130i 13152te52131te 13154xe54131xe
Answers
13053i53130i isotope remains after the ii -131 decays.
Isotopes are two or even more kinds of atomic nuclei that share the same atomic number but also place in the periodic table but differ throughout nucleon numbers because their nuclei have different neutron numbers. Isotopes are representatives of a component family which have the same protons in the nucleus but differ in the number of neutrons. The atomic number of the an element on the Periodic Table is determined by the amount of protons in its nucleus.The mass of an isotope, which refers to the total number of protons and neutrons, is used to identify it.
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A characteristic is a feature that helps to identify something. How would you describe the characteristics of a good movie or book?
Answers
A characteristic for a movie or book could be how good or bad the plot/story is. You can even get more into detail for movies. Such as, "How was the acting? When the character was sad did you really feel their expressions?" Or so on like that haha. For books, it could be about it's pattern of writing or such, "alliterations, stressed patterens etc. Hope I helped lol.
using the clues in the text you can determine environmental toxicologist studies how chemicals affect the environment
A- true
B- faulse
Answers
Answer question number 7
Answers
Answer:
C
Explanation:
It should be acidic soil that is below pH7. pH2-pH4 is too low and it is a strong acid. Plants won't survive in very high acidity soil
Calculate the mass defect and the nuclear binding energy of nitrogen-14.
The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu.
The mass of a nitrogen-14 atom is 14.00307 amu.
The mass defect of nitrogen-14 is
amu. Round to the decimal place.
The nuclear binding energy of one nitrogen-14 atom is
x 10A J. Round to 3 significant digits.
A:
Answers
Answer:
1.62 * 10^-11 J
Explanation:
Nitrogen-14 nucleus has seven neutrons and seven protons. So;
Total mass of protons = 7(1.00728 amu)
Total mass of neutrons = 7(1.00866 amu)
Total mass of nucleons = 7(1.00728 amu) + 7(1.00866 amu)= 14.11158 amu
Mass of Nitrogen-14 nucleus = 14.00307 amu
Mass defect = 14.11158 amu - 14.00307 amu = 0.10851 amu = 1.801852171 * 10^-28 Kg
Binding energy = Δmc^2
Where;
Δm = mass defect
c = speed of light
Binding energy = 1.801852171 * 10^-28 Kg * (3 * 10^8)^2
Binding energy = 1.62 * 10^-11 J
Answer:
0.10851 amu
1.62
-11
Explanation:
Yw
A scientist measures the boiling point of saltwater in a lab at an altitude of 800 feet above sea level. A second scientist measures the boiling point of freshwater in a lab at an altitude of 200 feet above sea level. When the scientists compare the data, they conclude that the electrostatic forces in saltwater are equal in strength to the electrostatic forces in freshwater. In one to two sentences, explain how the scientists used the data to draw their conclusion and whether or not this conclusion is valid.
Answers
The electrostatic interactions between salt water molecules are stronger than those between salt water molecules because the boiling point of salt water is higher than that of fresh water.
What is electrostatic force?The electrostatic force is made up of electrically charged particles that exhibit both an attractive and a repulsive behavior. It is additionally called Columb's force. Charles-Augustin de Coulomb, a French scientist, would be honored by having the Columb attraction bear his name. However, electrostatic force is one of the four fundamental forces of nature. Electrostatics is the analysis of electric charges when they are at rest.
What is the example of electrostatic force?Examples of electrostatic forces include running a piece of paper through our hair while using a comb to create an electrostatic field. When one balloon is brushed with hair, the other balloon becomes drawn to it.
Explanation:In general, the intensity of the electrostatic interactions between the molecules in either type of water can be gauged from the boiling temperatures of various substances. We will quickly discover that salt water has a boiling point that is significantly higher than those of fresh water, showing that the electrostatic interactions between salt water molecules are stronger than those between fresh water molecules.
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How many molecules of NaOH are in 10.0 g of NaOH? *
Answers
The number of molecules in 10.0 gram of NaOH is 15 * 10²².
To solve this question, we need to understand some terms of mole concept,
Mole - It is the amount of substance containing same number of molecules or atoms as there are atoms in 12 gram of carbon-12 isotope.
Molecules - It is group of atoms bonded together, representing the smallest fundamental unit of a chemical compound taking part in chemical reaction.
Molecular weight - The sum of atomic masses of all atoms in molecules.
Avogadro number - It is the number of atoms, ions, electrons, molecules in one mole of substance. It is represented as NA.
NA = 6.0 * 10²³ (approx)
To calculate the number of molecules, we apply the formulae,
no. of molecules = moles * NA
moles = weight / molecular weight
moles = 10.0 / 40
= 0.25
Substituting this value to calculate number of molecules,
no. of molecules = 0.25 * 6.0 * 10²³
= 15 * 10²²
Therefore the number of molecules of in 10.0 g of NaOH is 15 * 10²².
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Arrange the following element, lithium, potassium, carbon and fluorine in increasing ionization energy
Answers
Answer:
flourine(1681),carbon(1086),lithium(520) and potassium(419)
as we can see that the ionization energy of flourine is the highest than carbon than lithium and than potassium
Explanation:
i hope it will help you
Answer:
Potassium, Lithium, Carbon, Fluorine
Explanation:
potassium has the least and Fluorine has the most
What is the charge of a beta particle?
Answers
Answer:
Beta particles have a charge of minus 1.
Explanation:
Hope this helps!
Answer:
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Explanation:
Beta particles have a mass which is half of one thousandth of the mass of a proton and carry either a single negative (electron) or positive (positron) charge. As they have a small mass and can be released with high energy, they can reach relativistic speeds (close to the speed of light)
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Which of the following two sources of alternative energy are known as intermittent sources of energy? You may need to select more than one answer.
a. hydroelectric
b. solar energy
c. biomass energy
d. wind energy
Answers
Answer:
I'am no clear about that but, I think B&D are the answer.