what are two versions of genes called and how are they diffrent?

The correct answer is; "The frozen metal was discovered through biased research practices."

Scientific research is based on standard practices and not on personal bias hence they should not have taken a decision based on the frozen metals. Bias prevents a researcher from taking an objective look at experimental observations before arriving at a conclusion.

The greatest pitfall that must be avoided when conducting a scientific study is bias.

A bias is introduced when there is a disparity between observation and interpretation of data in a scientific study.

In the case of this question, the researchers already wanted to establish the possibility of obtaining a carbonless fuel. Their minds were so clouded with this bias that they forgot to thoroughly investigate the pieces of frozen metal thereby arriving at a lobe-sided, unscientific conclusion. This makes their work, "bad" science.

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Answer:

it would be A The conditions of the experiment are not replicate able or repeatable.

Explanation:

A team of researchers is working on a project to make a new kind of carbonless fuel. During their experiment, there is an explosion that destroys the lab. While they are cleaning the debris, they discover three pieces of frozen metal. The researchers were excited to report that they had discovered a fuel that burns so clean it becomes cold. Other scientists attempt to make the carbonless fuel but are unsuccessful. Which statement best explains why this scenario represents "bad" science?

The conditions of the experiment are not replicable or repeatable.

The process of making clean fuel is known due to the explosion.

The frozen metal was discovered through biased research practices.

The result of clean fuel production, the frozen metal, is not observable.

Answer:

bro please rotate it and send again please

For pneumatic elevators operating on cold Chicago nights, lifting capacity may be reduced due to the reduced pressure of the gas contained in the elevator. The exact extent of this drop will depend on the specific conditions of the elevator and the severity of the low temperature.

How much does an airlift system cost?

The average cost of an air suspension system ranges from $500 to over $2,000 depending on vehicle and location. If you just put an auxiliary air suspension spring on your truck, you can consider yourself on the lower end of the cost spectrum.

How long does the airlift take?

eternally! With proper installation and maintenance, our air springs will last indefinitely. Check pressure regularly or use the onboard air system to maintain it. Air Lift offers a lifetime warranty on all air spring kits.  

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Hi there!

Let me know if you have questions about my answer:

6.15 × 10²⁴

Explanation:

To find the number of atoms, divide the mass of calcium (m) by its molar mass (MM). This will give you the number of moles of calcium (n).

\(n = m/MM\)            Start with a formula

\(=\frac{41.0g}{40.08g/mol}\)             Substitute values from the question

\(= \frac{41.0g*1mol}{40.08g}\)             Simplify

\(= \frac{41.0mol}{40.08}\)                 Cancel out the units "g"

\(= 1.022...mol\)          Number of moles of calcium, with 4 significant figures

Then, multiply the number of moles of calcium (n) by Avogadro's number (\(N_{A}\)) to find the number of calcium atoms.

\(Number.of.Ca=n*N_{A}\)      Start with a formula

\(= 1.022mol*\frac{6.022*10^{23}Ca}{1mol}\)      Substitute values from the question

\(= \frac{1.022mol*6.022*10^{23}Ca}{1mol}\)           Simplify

\(= 1.022*(6.022*10^{23}Ca)\)     Cancel out the units "mol"

\(= 6.154*10^{24} Ca\)                   Multiply, leave one extra digit to help round. "4" tells you to round down.

\(= 6.15*10^{24} Ca\)                     Final answer to 3 significant figures*

*When multiplying and dividing numbers, your final answer will have the same number of significant figures as the number with the least number of significant figures in the question.

40.08 has 4 significant figures. 41.0 has 3 significant figures. So, you want 3 significant figures in your final answer.

I hope this helps!

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Answer:

Explanation:

Alcohols can be oxidised by a variety of oxidising agents. Sodium or potassium dichromate acidified with dilute sulphuric acid can bring about oxidation in straight chained alcohols.

Answer:

2-methylbutan-1-ol is oxidised by potassium dichromate: 2-methylbutan-1-ol + [O] ==> 2-methylbutan-1-al + water CH3CH2CH(CH3) CH2OH + [O] ==> CH3CH2CH(CH3) CHO + H2O

Explanation:

From the calculation, the percentage of water in the sodium hydroxide sample is 7%.

The term neutralization has to do with the reaction between an acid and a base to yiled salt and water.

Now we have  to apply the titration formula;

CAVA/CBVB = NA/NB

CA = concentration of acid

CB = concentration of base

VA = volume of acid

VB = volume of base

NA = number of moles of acid

NB = number of moles of base

The reaction equation is; HCl + NaOH ----->NaCl + H2O

CAVANB = CBVBNA

CB = CAVANB /VBNA

CB = 34.9 * 0.2 M * 1/10 * 1

CB = 0.698 M

Number of moles = Conncentration * volume

= 0.698 M * 100/1000 L = 0.0698 moles

Mass = Number of moles * molar mass

Mass =  0.0698 moles * 40 g/mol = 2.79 g

percent of NaOH = 2.79 g/ 3g * 100/1 = 93%

Percent of water = 100- 93 = 7%

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Answer:

A) The molar mass of SnO₂ is 150.71 g/mol (118.71 g/mol for Sn and 32 g/mol for O). The mass percent of tin in SnO₂ is (118.71 g/mol / 150.71 g/mol) × 100% = 78.76%.

B) The mass of tin in the final sample is 2.842 g.

C) Let x be the mass of tin in the original sample. The mass of oxygen in the original sample is (2.540 g - x). Since tin is oxidized to SnO₂, we can write the equation: Sn + O₂ → SnO₂. The molar ratio of Sn to SnO₂ is 1:1, so the number of moles of Sn in the original sample is the same as the number of moles of SnO₂ in the final sample. Using this, we can set up the following equation:

x / 118.71 g/mol = 2.842 g / 150.71 g/mol

Solving for x, we get x = 1.727 g.

Therefore, the mass of tin in the original sample is 1.727 g, and the mass of oxygen in the original sample is (2.540 g - 1.727 g) = 0.813 g.

D) The mass of oxygen in the original sample is 0.813 g.

E) The number of moles of tin in the original sample is 1.727 g / 118.71 g/mol = 0.0146 mol.

F) The number of moles of oxygen in the original sample is 0.813 g / 32 g/mol = 0.0254 mol.

G) The ratio of tin to oxygen in the original sample can be calculated by dividing the number of moles of tin and oxygen by the smallest of the two:

tin: 0.0146 mol / 0.0146 mol = 1

oxygen: 0.0254 mol / 0.0146 mol ≈ 1.74

We can round this to the nearest whole number, giving a ratio of 1:2. Therefore, the empirical formula of the original oxide of tin is SnO₂.

The number of moles of AgI that will be formed when 75.0 mL of 0.300 M AgNO₃ is completely reacted is 0.0225 moles.

The number of moles of a substance can be calculated from a stoichiometric approach.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, the following reaction is given: 2AgNO₃(aq) + Cal2(aq)-->2Agl(s) + Ca(NO3)2(aq)

moles of AgNO₃ = 0.075 × 0.3 = 0.0225 moles

If 2 moles of AgNO₃ reacted to produce 2 moles of AgI, then 0.0225 moles of AgI will also be produced.

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After solving the equation the correct answer is a) -822 kJ/mol.

An equation is a mathematical statement that expresses two expressions as being equal. It contains an equal sign, and typically involves variables, numbers, and/or operations such as addition, subtraction, multiplication, and division. Equations can be used to solve for unknown values and to describe relationships between things. They are a powerful tool in mathematics, science, engineering, economics, and other fields.

The given equation is Fe2O3 + 3H2 → 2Fe + 3H2O. Since the enthalpy of formation of water, ΔHf^0 (H2O) is known, the enthalpy of formation of iron (III) oxide can be calculated as follows:
ΔHf^0 (Fe2O3) = -6.09 kJ - 3(-241.84 kJ/mol)
ΔHf^0 (Fe2O3) = -822 kJ/mol
Therefore, the correct answer is a) -822 kJ/mol.

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Since one mole of every substance contains 6.0 * 10²³ formula units, the maximum number of formula units in one mole of NaCl is 6.0 * 10²³ formula units.

Formula units refer to the empirical formula of one mole of any substance.

One mole of every substance contains the same amount of formula units.

The number of formula units in 1 mole of a substance is given by the Avogadro number.

The Avogadro number is equal to 6.0 * 10²³ particles.

Hence 1 mole of NaCl will contain 6.0 * 10²³ NaCl particles.

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Answer:

conservation of mass

As a result of the transfer of electrons from the metal atoms to the non-metal atoms during the reaction between two non-metals, ions are created. An ionic compound is a name given to the final product. Sodium + chlorine produces sodium chloride as one example of metals and non-metals reaction.

By sharing electrons, two or more atoms can form covalent bonds. When two or more ions come together, their opposing charges hold them together to form ionic bonds. The melting points of ionic compounds are high. Ionic substances are rigid and brittle. When dissolved in water, ionic substances separate into ions. It is crucial to understand that covalent bonding, also known as electron sharing, occurs in some capacity in all ionic compounds, preventing pure ionic bonding, in which one atom or molecule entirely transfers an electron to another.

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Answer:

yes

Explanation: took quiz

The final temperature of aluminum is 57.37°C
Q=mcΔT
This means that the amount of energy produced is equal to the mass of the system multiplied by its change of temperature and multiplied by its specific heat
ΔT=(x−27.5) °C
503.38 = 25 × 0.9 × (x - 35)
(x - 35) =  503.3 / 25 × 0.9
x = 57.37°C
What is specific heat constant?
The specific heat capacity c [J/(kg K)] of tissue describes how much energy is required to change the temperature of 1 kg of tissue by 1 K (=1°C). For example, the lower specific heat capacity of fat compared to other soft tissue indicates, that fat requires less energy to obtain a certain temperature increase. If we multiply specific heat capacity by mass density (ρ·c [J/(m3 K)]), we obtain the energy required to raise the temperature of 1 m3 of tissue by 1 K (=1°C)—that is, a quantity equivalent to a volume-specific heat capacity
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Hi the answer is

B. Electron

Answer:

B. Electron

Explanation:

Answer:

i think the answer is A....

Explanation:

Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.

Answer:

3.75

Pka of formic acid (HCOOH)= 3.75

pH= PKa +log [ Sodium formate/ formic acid] = 3.75

NaOH reacts with HCOOH as HCOOH (aq) + NaOH(aq) --> NaCHO2 (aq) and H2O (l)

Moles of HCOOH= 0.1*1= 0.1 moles

Moles of NaOH= 5*1/1000= 0.005 moles

HCOOH is in excess and the excess is = 0.1 - 0.005 = 0.095

Moles of sodium formate = 0.005 + 0.1 = 0.105 moles of HCOOH= 0.095

volume after mixing = 1 + 5 /1 000=1.005

Concentrations : HCOOH= 0.095/1.005 sodium formate= 0.105/1.005

pH= 3.75+log (0.105/0.095)=3.85

When NaOH is added, molarity is , 1*5= 1000*M

M= 5/1000=0.005

The pH remains the same. Only the molarity of NaOH changes.

The molar mass of MgCrO4 is approximately 140.30 g/mol.

To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.

The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).

The atomic masses of the elements can be found on the periodic table:

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chromium (Cr) has an atomic mass of around 51.99 g/mol.

Oxygen (O) has an atomic mass of about 16.00 g/mol.

Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:

Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)

Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)

Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol

Molar mass ≈ 140.30 g/mol

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The conversions that could be performed with these two conversion factors alone, Density—> molar mass or/formula mass—> is volume ---> moles; option D

Conversion factors are expressions or values which are used to convert from one unit or value to another.

The conversion factor given is:

Density—> molar mass or/formula mass—>

volume = density/mass

moles = mass/molar mass

Volume to moles = density/mass -->  mass/ molar mass

Volume to moles = density ---> molar mass or formula mass

The conversion of volume to moles will therefore require density and molar mass or formula.

In conclusion, conversion factors are used to convert from one unit  value to another.

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Answer: you have to talk to someone who wont mind wanting to wanting to like you a lot like that.

Explanation:  I wish I could be able to talk to someone who would want to get to like me like that, so its a very relatable situation.

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

Tarnished is to Image or reputation

To calculate the molarity of vinegar, we need to know the moles of acetic acid (the main component of vinegar) and the volume of vinegar used.

The change in volume during the titration is:

Change in volume = Final volume - Initial volume

                = 33.5 mL - 12.3 mL

                = 21.2 mL

Assuming that the density of vinegar is approximately 1 g/mL, we can convert the change in volume to grams:

Change in volume (mL) × Density (g/mL) = Mass (g)

21.2 mL × 1 g/mL = 21.2 g

Next, we need to convert the mass of acetic acid to moles. The molar mass of acetic acid (CH3COOH) is approximately 60.05 g/mol:

Moles = Mass (g) / Molar mass (g/mol)

     = 21.2 g / 60.05 g/mol

     ≈ 0.353 mol

Finally, we calculate the molarity of vinegar using the moles and total volume:

Molarity = Moles / Total volume (L)

        = 0.353 mol / 0.0212 L

        ≈ 16.65 M

Therefore, based on the information provided, the molarity of vinegar is approximately 16.65 M.

Answer:

mass

Explanation:

Answer:

=3 means is 3 or greater so that would be f and g subshells

=0 means is 0 or greater so that would be s, p, d, f and g subshells

=1 means is 1 or greater so that would be p, d, f, and g subshells

=4 means is 4 or greater so that would be g only

The percent composition of a given element in a compound is the number of molar mass in one mole of that compound.

The percentage of each element in a compound measured by mass is known as the composition. A compound's chemical formula can also be used to estimate its % makeup. To start, the formula's subscripts are employed to determine how much of each element there is in a mole of the compound.

Percentage Composition. Find the molar mass in grams per mole of each component in the compound. Find the compound's total molecular weight. Divide the total molecular mass by the molar mass of the component. Your new number will range from 0 to 1. To obtain the percent composition, multiply it by 100%.

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Answer:

the answer is letter B,FALSE