Chemistry High School

Answer this chemistry question below

Answers

Answer 1

Its D :) your welcome

Related Questions

ASAP PLEASEEEE

Draw a graph of how kinetic energy & temperature are related

(LOOK AT THE PICTURE ATTACHED)

Answers

Answer:

As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.

Explanation:

Answer:

jayfeather the answerer friend me

Explanation:

im hella confused and need some help

Answers

An oxide is a molecule that has 2 Oxygen atoms in its empirical formula. Stoichiometry would be used as the ratio of Oxygen to Dioxides is 3:2. So 52.29 would be multiplied by 3/2. The answer is 78.435 Mol of CO2 are formed.

is mass conserved in 2Na+2H2O=2NaOH+H2

Answers

Answer:

yes mass conservation is in 2Na+2H2O=2NaOH+H2

Explanation:

it tells how many atoms or molecules of a reactant or a product take part in the reaction

Metals usually bend without breaking
while gems usually break in a specific pattern. What might be happening
to the bonds between the atoms in these materials that can explain this
difference?

Answers

Metals and gems have different properties in them which causes them to react in a such way.

We have that For a metal to metal metallic bond the atoms are arranged in a very compact manner ,This help for metals to move over each other in case of a bend.While gem atom don't same attribute.

From the question we are told

Metals usually bend without breaking

while gems usually break in a specific pattern. What might be happening

to the bonds between the atoms in these materials that can explain this

difference?

Generally

Metals are elements that form positive ionsMetals tend to engage in variant types of bondsFor a metal to metal metallic bond the atoms are arranged in a very compact manner This help for metals to move over each other in case of a bend.Hence, Metals don't break upon a bend

Gems, on the other hand break on impact be cause of the bonding between them.Most gems use an ionic bond for the bonding mechanism

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Convert a measurement of 89 cg to its equivalent in mg

Answers

Answer:

1 cg = 10 mg

Explanation:

So, 89cg = 89 * 10 = 890mg!

Pls thank, 5star, and brainliest!

Will these groups of elements form ionic or molecular compounds? sodium and Iodine

Answers

Answer:

Ionic

Explanation:

Answer:

carbon and hydrogen are molecular

Explanation:

Please help

How do Newton's lawd describe the motion of an object?

Answers

Newton’s laws of motion relate an objects motion to the forces acting on it , in the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact , they apply forces to each other of equal magnitude and opposite direction

What is the Sl unit for energy? Be sure to give the full name for the unit

Answers

Answer:

Joules

Explanation:

Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)

Answers

Answer:

The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.

Explanation:

2 eggs cook in a frying pan, which is sitting over a gas burner. Is thermal energy being transferred by radiation in this image? Why or why not?

Answers

Sample Response: No, thermal energy is not being transferred by radiation in this image. The eggs are in direct contact with the metal pan, which is in direct contact with the gas flame, so this is conduction, not radiation. Radiation transfers thermal energy by electromagnetic waves, not by direct contact.

Explanation:

No, thermal energy is not being transferred by radiation in this image.

The eggs are in direct contact with the metal pan, which is in direct contact with the gas flame.

Thermal energy is being transferred by conduction.

Radiation transfers thermal energy by electromagnetic waves.

Radiation does not transfer thermal energy by direct contact.

Thermal energy is the heat energy that is produced with an increase in temperature. No, thermal energy is not transferred by radiation when eggs are cooked.

What is radiation?

Radiation is the process of thermal energy transfer that emits heat in all directions and does not require an intervening medium to travel.

Thermal energy is not transferred by radiation in the image as the eggs are in contact with the pan and the pan is in direct contact with a flame that radiates the heat by conduction.

Therefore, heat transfers by conduction and not by radiation.

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Which of the following statements does not describe a physical property of chlorine?
O The color of chlorine gas is green.
O The density of chlorine gas at standard temperature and pressure is 3.17 g/L. OChlorine combines with sodium to form table salt.
O The freezing point of chlorine is -101°C.

Answers

Answer:

the chlorine gas is green

Explanation:

the density of

The statement that does not give description of physical property of chlorine in the question is (The color of chlorine gas is green)

A physical property can be regarded as characteristic of matter which is not associated along with a change of it's chemical composition.

Some physical properties of substance can include density, hardness as well as color, melting and boiling points, or electrical conductivity.

The freezing point ( -101°C ) as well as the density ( 3.17 g/L.) of chlorine as given in the question are all physical properties because it not considered as been associated with a change chlorine chemical composition.

Therefore, the first option A is correct.

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How many atoms are in 4.5 g of AICI3?

Answers

Answer:

2.047 × 10^22 atoms.

Explanation:

To calculate the number of atoms (nA) in AlCl3, we first need to find the number of moles in the compound, AlCl3.

Molar mass of AlCl3 = 27 + 35.5(3)

= 27 + 106.5

= 133.5g/mol

Using mole = mass/molar mass

mole = 4.5/133.5

mole = 0.034moles

number of atoms in a substance (nA) = number of moles (n) × Avagadros number or constant (6.02 × 10^23 atoms)

nA of AlCl3 = 0.034 × 6.02 × 10^23

nA = 0.2047 × 10^23

nA = 2.047 × 10^22 atoms.

A fixed mass of oxygen gas occupies 300cm cube at 0 degree centigrade. what volume would the gas occupy at 15 degree centigrade

Answers

Answer:

hey

Explanation:

3. How many moles of hydrogen atoms are present in 2.0 moles of ammonia
NH3?
A.3.0 mol
B. 6.0 mol
C. 8.0 mol
D. 2.0 mol

Answers

Answer:

3 I think

Explanation:

this could be because I noticed the 3 subscript by the H which is the letter for hydrogen but I'm not 100% sure

if I'm correct, then ur welcome <3 it's always nice to be nice UwU

here's Jay Jay for u cuz I love her ^^

Tectonic Plates
Tectonic Plates
Which of the following is an accurate description of the movement of the tectonic plates in the diagram?
O A. Plate A is sliding past plate B.
O B. Plate A and plate B are diverging.
OC. Plate A and plate B are of equal density and are colliding.
OD. Plate A is denser than plate B, which results in subduction.

Answers

D. Plate A is denser than plate B, which results in subduction.

If the temperature of a gas in a balloon remains constant but the pressure
is decreased, the volume of the balloon will
decrease
increase
remain the same
not enough information to predict

Answers

Answer:

increase

Explanation:

if the pressure goes down then the gas will spread out more, meaning the volume will increase

Why did early people most likely choose to settle in Mesopotamia?

Answers

Answer:

People wanted to settle there because it had good living conditions. There was rich soil, and lots of water sources.

I hope this helps!

Why is it that the decomposition of nitroglycerin can result in so
much more volume than the decomposition of sodium azide?

Answers

Answer:

with the molecular formula C3H5(ONO2)3, has a high nitrogen content (18.5 percent) and contains sufficient oxygen atoms to oxidize the carbon and hydrogen atoms while nitrogen is being liberated, so that it is one of the most powerful explosives known.

Explanation:

NTG reduces preload via venous dilation, and achieves modest afterload reduction via arterial dilation. These effects result in decreased myocardial oxygen demand. In addition, NTG induces coronary vasodilation, thereby increasing oxygen delivery.

The decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms.

What is volume?

A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, like the cubic metre or litre, or different imperial or US-standard units, including the gallon, quart and cubic inch. Volume and length (cubed) have a symbiotic relationship.

The total volume much a container is usually thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the quantity of fluid (liquid or gas) that the container may hold. The decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms for the nitrogen to be liberated while also oxidising the hydrogen and carbon atoms.

Therefore, the decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms.

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Please help (: List and describe the locations and conditions in the Four zones of a lake

Answers

Explanation:

littoral horizantal raw curated

Please help me ASAP

Answers

3N2 + 3H2 ———> 2NH3.

Questions and answer options are on ( Picture )
remember pick 2 answers it says
help :(
ZOOM IN if needed

Answers

Answer:

The answer is A

Explanation:

I dont see any claim

How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?
1. They used X-ray analysis.
2. They used litmus testing.
3. They burned the paint to examine what elements were left after the chromium was burned off.
4. They studied the density of modern yellow paint to that of 100-year-old paint.

Answers

Answer:

I think the answer is A - they used X-ray analysis.

Explanation:

Answer:They used X-ray analysis

Explanation:

It’s in the text

What do scientists think is responsible for this dramatic change in height? Cite evidence from the text to support your answer.

Answers

Answer:

Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.

Explanation:

i might be right

How many moles of Na2SO4 are present in 426.12 grams of Na2SO4? (5 points)

Group of answer choices

2

3

5

6

Answers

Answer: It’s 2.9 moles

Explanation:

Answer:

b) 3

Explanation:

i got it right

Help please!!! How many grams are in 3.46 moles of Sulfur?

Answers

Answer:

The answer is: 78.04454 grams

Explanation:

Answer:

IHi the answer is 32.065 grams

Scott and his classmates were looking at an animal cell under a microscope. They are trying to locate the cell's DNA, which is found in its chromosomes. Where should Scott look to find the chromosomes?

In the mitochondria

In the cell nucleus

In the cytoplasm

In the cell vacuole

Answers

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells.

Which element is a poor conductor of heat?
A. F
B.K.
C. Fe
D. Ag

Answers

The Answer Is Fe Because Fluorine Is a Gas (In Its Elemental Form) Which, Like Other Gases, Is Not a Good Conductor Of Either Heat Or Electricity.

If 23.17 g of beryllium (Be) reacts with water at standard temperature and pressure,
how many liters of hydrogen (H2) are produced?

Answers

Volume of H2 produced = 57.6576 L

Further explanation

Given

23.17 g Be

Required

Volume of H2

Solution

Reaction

Be(s)+H2O(g)→BeO(s)+H2(g)

mol Be :

= 23.17 g : 9 g/mol

= 2.574

From the equation, mol H2 : mol Be = 1 : 1, so mol H2 = 2.574

Volume H2(assumed at STP, 1 mol=22.4 L) :

= 2.574 x 22.4 L

= 57.6576 L

How many moles of CH3 are in 60 grams of CH3 ?

Answers

Answer: There are 3.99 .

Explanation:

What forms the individual characteristics on a bullet?

Answers

Some of the class characteristics found on a fired bullet are (1) the caliber of the bullet (diameter), (2) the number of lands and grooves, (3) the twist of the rifling (left or right), and (4) the widths of the land and groove impressions.

Answer:

On bullets, the class characteristics are the rifling specifications of the barrel from which the bullet was fired. ... In a barrel, the individual characteristics are produced by the random imperfections and irregularities of the tool or tools used to produce the lands and grooves, and by use, corrosion, or damage.

Explanation:

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