Plzz write a small pharghraph
Question:

A 250mL Erlenmeyer flask weighing 55g contains 5g of sodium bicarbonate. To this, an excess, 15g, of acetic acid is added to the flask. While swirling, many bubbles are present. Finally, you stop swirling the flask, and the bubbles stop. You then place this flask on an analytical balance. The mass registers 73g.

How does this final mass compare with the value expected according to the Law of Conservation of mass?

Why do you believe that this comparison exists?

State the Law of Conservation of Mass. Do these results break this law? Why?

What changes, if any, could be made to the procedures in this experiment to allow a closer comparison to what the Law of Conservation would expect?

Answers

Answer 1

Mass = reactencts, 73g

Related Questions

1. the rate of change in an object's position over time is called what
2. the type of energy that is the sum of kinetic and potential energy at any given time is what
3. A push Or pull that can change the motion of an object (examples: magnetic force, frictional force. Please Help me this is due tomorrow

Answers

Answer: 1 . velocity 2. total mechanical energy. 3. magnetic force

Answer:

1. Rise over run, slope, or velocity

2. Mechanical Energy

3. Temperature

It is a broad question

please help me ill give brainiest

Answers

Your reactants are on the left side and your product is on the right side

Reaction on the left product on the right

What is inertia?
1 . the tendency of an object to stay at rest or in motion
2. the energy of an object because of its position
3. a force that pulls objects toward each other
4. a force that slows an object down

Answers

Answer:

A. The tendency of an object to stay at rest or in motion.

Explanation:

Interna makes stuff stay on motion or in place.

Answer:

the tendency of an object to stay at rest or on motion

What role do bacteria play in healthy soil?

A. They help keep the soil loose enough for plant roots to grow.

B. They provide stability for the plants in the soil.

C. They hold tiny pockets of air so roots can breathe.

D. They help break down minerals in the soil into a form that plants can absorb.

Answers

Answer:

B I think

Explanation:

improved soil structure and soil aggregation, recycling of soil nutrients, and water recycling.

i also agree that the correct answer is B.

please help as soon as possible!

Answers

Answer:

4 because CoCO2 is in a degree And it’s all four different elements

I would say there are 7 in total once counted from the compounds.

This graph shows distance over time for three runners.

Which runner ran at the fastest speed?

Runner A (Blue)
Runner B (Orange)
Runner C (Green)

Answers

Runner A
Explanation: A had the largest slope throughout the run which means he had the fastest speed

Runner A, the steeper the slope,the faster. -Freshman

What is the center of a plant cell? The actual question is what’s the center of an onions root tip?

Answers

The center of a plant cell is a nucleus!

A nucleus! That is where the plants DNA is stored :)

someone please help I'm full of assignments.
What rule of magnetism is illustrated by the lines of the iron filings in Step 12?
What rule of magnetism is illustrated by the lines of the iron filings in Step 15?
Why was glass or plastic used to separate the filings from the magnets in the experiments?
Did the glass or plastic stop the passage of the magnetic lines of force?
Did the iron filings almost or completely bridge the open end of the horseshoe magnet?
So, here are the steps:

These supplies are needed:
two bar magnets
one horseshoe magnet
iron filings
sheet of glass or plastic
several sheets of paper

Bar Magnet
1. Place the bar magnet on a table.
2. Put a sheet of glass or plastic over the magnet.
3. Sprinkle the iron filings over the sheet evenly.
4. On a separate paper, sketch the magnet. Show the lines made by the iron filings.

Horseshoe Magnet
5. Place a horseshoe magnet on the table.
6. Put a sheet of glass or plastic over the magnet.
7. Sprinkle the iron filings over the sheet.
8. On a separate paper, sketch the magnet. Show the lines made by the iron filings.

N Pole to N Pole
9. Place two bar magnets N pole to N pole with an inch between them.
10. Put a piece of glass or plastic over the magnets.
11. Sprinkle the iron filings over the glass or plastic.
12. On a separate paper sketch the magnets. Show the lines made by the iron filings.

N Pole to S Pole
13. Turn one of the bar magnets around so the magnets are N pole to S pole with an inch between.
14. Sprinkle the iron filings over the glass or plastic.
15. On a separate paper sketch the magnets. Show the lines made by the iron filings.

Answers

Answer:

The most basic law of magnetism is that like poles repel one another and unlike poles attract each other; this can easily be seen by attempting to place like poles of two magnets together

Methane is a gas at room temperature and pressure. Explain why this is the case.

Answers

Answer:

hope it helps ❤

Explanation:

Methane only has london dispersion forces since it is nonpolar. London dispersion force is the weakest intermolecular force, so the forces between its molecules will be weak. This leads to a low boiling point that is lower than room temperature, which makes it a gas at room temperature.

Methane has london dispersion forces since it is nonpolar. London dispersion force is the weakest intermolecular force, so the forces between its molecules will be weak. This leads to a low boiling point that is lower than room temperature, which makes it a gas at room temperature.

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

How is a person running kinetic energy ?

Answers

Answer: When we go for a run we are using chemical energy in our bodies to produce movement (kinetic energy), which in turn converts to warmth (thermal energy).

Please help like please

Answers

Both items achieve a more stable configuration

Imagine you are a civil engineer who designs buildings. How might testing small-scale building models or their components be helpful in testing improvements and changes to the building design?
PLS HELP ME-

Answers

Answer:

very much

Explanation:

small scale building models are efficient and easier to accomplish.altjougj sometimes it might be a bit tricky to handle their little features but they are unique and a desingn of the modern world.

Testing or using small scale models will help you better understand the architectural aspects and design of your building better you will be able to notice small details that may never happen on a bigger scale!

Lab: Thermal Energy Transfer

Answers

Answer:

Thermal energy transfers occur in three ways: through conduction, convection, and radiation. When thermal energy is transferred between neighboring molecules that are in contact with one another, this is called conduction.

Which element has the same number of energy levels as oxygen?

Answers

Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon

All on energy level 2

Answer:

Elements have the same number of energy levels as oxygen.

Elements and definitions

Lithium - Lithium compounds, also known as lithium salts, are primarily used as a psychiatric medication. It is primarily used to treat bipolar disorder and treat a major depressive disorder that does not improve following the use of antidepressants.

Beryllium - Beryllium is a chemical element with the symbol Be and atomic number 4. It is a relatively rare element in the universe, usually occurring as a product of the spallation of larger atomic nuclei that have collided with cosmic rays. Within the cores of stars, beryllium is depleted as it is fused into heavier elements.

Boron - Boron is a chemical element with the symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar System and in the Earth's crust. It constitutes about 0.001 percent by weight of Earth's crust.

Carbon - Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalent-making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust.

Nitrogen - Nitrogen (N), nonmetallic element of Group 15 [Va] of the periodic table. It is a colorless, odorless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter.

Fluorine - Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As the most electronegative element, it is extremely reactive, as it reacts with all other elements, except for argon, neon, and helium.

Neon - Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

Which change of state is shown in the model?
A. Condensation
B. Boiling
C. Sublimination
D. Freezing

Answers

Answer:

Explanation:

D freezing
All the molecules are tight together

help quick............

Answers

Atomic number: 42

Chemical symbol: Molybdenum (Mo)

Number of protons: 96

Atomic mass: 96

Number of electrons: 42

Number of valence electrons: 5

Number of electrons in the n=3 shell: 42

Number of neutrons: 54

what is the relationship with a Wave medium

Answers

Explanation:

medium: The material or empty space through which signals, waves or forces pass. direction of propagation: The axis along which the wave travels. wave: A moving disturbance in the energy level of a field.

Answer:

Develop models bonds can be placed on a scale that ranges from 100% ionic to 100% covalent. Use what you know about the types of bonds that specific elements tend to form to place each of the following compounds in the correct location on the scale: CO2, N2 , NaF, H2O

Answers

Answer:

Bonds can be placed on a scale that ranges from 100% ionic to 100% covalent.

CO2: CO2 is a covalent compound, with each carbon atom sharing electrons with two oxygen atoms. Therefore, it can be placed closer to the 100% covalent end of the scale.

N2: N2 is a covalent compound, with each nitrogen atom sharing electrons with another nitrogen atom. Therefore, it can be placed closer to the 100% covalent end of the scale.

NaF: NaF is an ionic compound, consisting of a sodium cation (Na+) and a fluoride anion (F-). Therefore, it can be placed closer to the 100% ionic end of the scale.

H2O: H2O is a polar covalent compound, with the hydrogen atoms sharing electrons with the oxygen atom, but the electrons are not shared equally, therefore the oxygen atom has a partial negative charge and hydrogen atoms have a partial positive charge. Therefore, it can be placed closer to the middle of the scale, between ionic and covalent.

Overall, the scale can be represented as follows:

100% Ionic <-------> NaF <-------> H2O <-------> CO2 <-------> N2 <-------> 100% Covalent

I’ll give the definitions for half of them ( 2 ) CO2 is Carbon dioxide and H20 is the scientific word for Water/ Aqua

Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)

Answers

Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome

Explanation:

rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.

help me with this I only have one more
1156 g/L
= ________ kg/mL

Answers

The Answer is 0.001156.

To convert g/L to kg/mL, we need to divide the value of g/L by 1000. Therefore:
1156 g/L = 1.156 kg/L
Since 1 L is equal to 1000 mL, we can convert kg/L to kg/mL by dividing by 1000:
1.156 kg/L = 1.156/1000 kg/mL
1.156/1000 kg/mL = 0.001156 kg/mL
Therefore, 1156 g/L is equal to 0.001156 kg/mL.

Pretend you are taking a journey to the center of the earth in a futuristic travel capsule that can withstand extreme temperature and pressure. Creatively describe the structure and makeup of the 4 layers of the earth while on your journey

Answers

Answer:

ozone layer

Explanation:

because of high temp ( pls brainliest

You may think of changes in climate occurring as you go north or south. This climber stayed at the same latitude and went up. What explains the difference in temperature and climate between the top and bottom of Mt. Kilimanjaro? Please explain in 3-5 sentences thank you for 81 points

Answers

Answer: I'm not really sure but I think its dew to the different heights and tempura going up and down and the flow of wind.

Explanation:

Answer:

Mountains make it possible for snow to be found at the equator. Why does the temperature become colder the higher up a Mountain? Generally the climate on mountains get progressively colder with increased altitude (the higher up you go).

Explanation:

Simple and complex molecules are similar in that they both involve ____ atoms A water B simple C bonded D complex

Answers

Answer:

The answer is C.

Explanation:

Please give brainliest

Answer:

Explanation:

complex, in chemistry, a substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and held together by forces that are chemical (i.e., dependent on specific properties of particular atomic structures) rather than physical.

write a short story using the characteristics of the subatomic particles and their locations in the atom. For example, you need a positive character, a neutral character, and a negative character. You need two different locations. One to be the center location of the story and the other to be outside the center. At a minimum you should have at least 1 paragraph with about 5 sentences. Make sure that you use complete sentences.
Make sure it is school appropriate!!

Answers

Explanation: There are three subatomic particles called electrons, protons, and neutrons. Electrons have a negative charge, protons have a positive charge, neutrons have no charge. The particles are held withen the atom by 4 fundamental forces-gravity, electromagnetic force, strong force, and weak force

A whole story ??? Like a full on story or

List 2 similarities and differences between prokaryotic and eukaryotic cells.
Will give brain

Answers

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus, and has other membrane-bound organelles that allow for compartmentalization of functions.The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.

-- please mark the brainliest and click the thanks button if correct :)

Answer:prokaryotes:no nucleus,cell wall and cell membrane

eukaryotic:has nucleus,and endoplasmic reticulum

Explanation:

Please help me por favor :'(

Answers

More volume, takes longer to heat all the molecules.

which chemical process is illustrated below?

Answers

Answer:

I believe it is D, Dehydration synthesis of amino acids to form a dipeptide

I would also say it is D! Good luck!

Can you please help me

Answers

answer:

The first in the row is correct

The correct answer is c I hope this helped you

Please write an introduction for a SHE task of Fire-Stick Farming.

Answers

Aboriginal people systematically burnt vegetation to reduce fuel and encourage new growth to lure grazing animals for hunting.

Fire stick Managing the environment through farming Aboriginal people routinely burned grass to minimise fuel and promote new growth in order to attract grazing animals for hunting.

Why is farming important?

Among the various ways that agriculture has an impact on society are the provision of food, habitat, and employment opportunities; the provision of raw materials for food and other goods; and the development of robust economies through commerce.

Why is farming beneficial to the environment?

A large number of species use pasture and crops as both a habitat and a source of food, making up around 50% of the planet's livable land. Sustainable management of agricultural operations has the potential to safeguard watersheds, restore significant habitats, and improve the quality of the soil and water supply.

To know more about Farming visit:

https://brainly.com/question/13821967

#SPJ13

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