Chemistry Middle School

How many atoms are in (NH4)2SO4

Answers

Answer 1

Answer:

Explanation:

(2*4=8)O

Answer 2

Ammonium sulfate has 15 atoms

Related Questions

During an experiment, Juan rolled a six-sided number cube 18 times. The number two occurred four times. Juan claimed the experimental probability of rolling a two was approximately 1/9. Which of the following is true about Juan’s claim?
A. Juan’s claim is incorrect. The correct experimental probability is 2/9.
B. Juan’s claim is incorrect. The correct experimental probability is 1/3.
C. Juan’s claim is incorrect. The correct experimental probability is 4/9.
D. Juan’s claim is correct.
PLEASE HURRY!!!!!!!!!!
God bless, stay safe, and happy holidays! :)

Answers

Answer:

Because u would have to find the undercorse of 010-1 witch makes the out of part by 6

Explanation:

Given :

Juan rolled a six-sided number cube 18 times.

The number two occurred four times.

To Find: Juan claimed the experimental probability of rolling a two was approximately 1/9. Why is Juan’s experimental probability incorrect?

Solution:

Total events = number of times cube rolled = 18

Favorable events = The number two occurred four times. = 4

So, Experimental probability of rolling a two was approximately 1/9

Answer:Juan's claim is incorrect. The correct experimental probablilty is StartFraction 2 over 9 EndFraction.

Explanation:

I need help ASAP! 10 points!

Answers

Answer:

The answer to this question is ( a )

Explanation:

ionic: transfer of electrons covalent: sharing of electrons

BRAINLIEST FOR RIGHT ANSWERS PLS
The table shows the mass and boiling point of some substances.

Boiling Point of Substances

Mass

(kg) Boiling Point of Water

(°C) Boiling Point of Soybean Oil

(°C)

1 100 300

2 M N

Part 1: Is the value of M less than, greater than, or equal to the value of N?

Part 2: Explain your answer for Part 1.

Answers

Answer:

The N given in the question is normality while the M given in the question designates morality.

Explanation:

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

A balloon is filled with 6.5 L of helium gas at 25oC and 1.0 atm. What volume will the balloon have when the temperature is lowered to -25oC and the pressure is increased to 1.5 atm?

Answers

honestly i have no clue. but u can

A weather balloon filled with hydrogen at 1 atm and -27^(h)C has volume equal to 1200 litres. On ascending, it reaches a place where temperture is -23^(h)C and pressure is 0.5 atm.

**WILL MARK BRAINLEST**
Based on the structural formula shown, what is the chemical formula of the following compound? *

C2OH7
C2H6O
CH3O
2C6HO

Answers

Answer:

C2H6O

Explanation:

C2H6O

the numbers go after the letters, and you base your answer off of the center of the structure.

brainliest please?

What does the conversation of mass say about the amount of atoms in the reactants compared to the products?

Answers

Answer:

the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

Answer:

$\boxed {\boxed {\sf Atoms \ in \ reactants \ = atoms \ in \ products}}$

Explanation:

The Law of Conservation of Mass states that mass cannot be created or destroyed.

In a chemical reaction, this means the mass of the reactants (substances going in and being changed) must equal the mass of the products (new substances from the reaction).

In addition, the amount of atoms must stay the same. The atoms can and will reconfigure to form different compounds, but the number of atoms stays the same.

What is not an Example of the Coriolis effect?
Having trouble, not good at science!

Answers

an effect whereby a mass moving in a rotating system experiences a force (the Coriolis force ) acting perpendicular to the direction of motion and to the axis of rotation. On the earth, the effect tends to deflect moving objects to the right in the northern hemisphere and to the left in the southern and is important in the formation of cyclonic weather systems.

Answer:

the turn of the world, shooting a bullet in the air, airplane and

rockets, bouncing ball, ocean current, driving on curved road

Explanation:

Bangkok, Thailand, and Lima, Peru, are located at opposite positions of Earth's surface. When a rock is dropped in both cities, observers would describe the motion of either rock with a word that means "down."
A) They are moving toward each other.
B) They are moving down, which is the same direction in both cities.
C) They are moving away from each other.
B) One rock is moving due east and the other is moving due west.
PLEASE HURRY!

Answers

Answer:

Its A I think

Explanation:

For the total answer is A

Which of Newton's 3 Laws explains a rocket lifting off? *

Law of inertia
Law of Acceleration
Law of Action-Reaction

Answers

Answer:

Newton's Third Law of Motion

Explanation:

A rocket expels hot gases at a very high pressure very quickly, and these gases have lots of energy, and according to Newton's third law, every action has an equal and opposite reaction. So, expel lots of gas at a high rate, and the energy of the gases being pushed out propels the rocket upward. Hope that helps!

Newton's Third Law states that "every action has an equal and opposite reaction". In a rocket, burning fuel creates a push on the front of the rocket pushing it forward. This creates an equal and opposite push on the exhaust gas backwards.

Look at the image. List 1 biotic factor and 1 abiotic factor that you see in this image.

Answers

The wolf is biotic and the rocks are abiotic

In what form is radiation emitted from the earth's surface back into the atmosphere?

As light

As greenhouse gases

As gamma rays

As heat

Answers

It would radiate heat

As Heat is the answer

I’ll give branliest to the best answer! Thanks!

Answers

The moon fully covers the sun (looking at it from earth).

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. That means during the day, the moon moves over the sun and it gets dark. A partial eclipse, when the moon doesn't completely cover the sun, happens at least twice a year somewhere on Earth.

Select all that apply.

Which of the following equilibria will shift to the left when the temperature is increased? [ΔH (kJ/mol) values are given in parentheses.]

(a) S + H2 ⇌ H2S ΔH (−20)

(b) C + H2O ⇌ CO + H2 ΔH (131)

(c) H2 + CO2 ⇌ H2O + CO ΔH (41)

(d) MgO + CO2 ⇌ MgCO3 ΔH (−117)

(e) 2CO + O2 ⇌ 2CO2 ΔH (−566)

Answers

I think it is A and C!

The equilibrium of the reaction (a), (d), and (e) will shift to the left side when the temperature is increased.

What is equilibrium law?

Equilibrium law states that if the dynamic equilibrium gets disturbed by changing the conditions such as temperature, pressure, etc., then to reestablish equilibrium, the position of equilibrium will shift to counteract the change.

As we know that if the change of enthalpy (ΔH) is negative then the reaction is exothermic in nature and if the change in the enthalpy is positive the reaction is endothermic in nature.

Therefore, the reaction (a), (d), and (e) are exothermic reactions, and the reaction (b) and (c) are endothermic reactions.

On increasing the temperature, if the forward reaction is exothermic. Then the equilibrium will shift to the reactant side or left so that excess heat will be absorbed in the backward reaction.

Therefore, when the temperature is increased, the reaction (a), (d), and (e) will shift the equilibria to the left side.

Learn more about equilibrium law, here:

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True or false? Tornadoes can form when the air in a strong thunderstorm or a supercell begins to rotate.

Answers

Answer:

true

Explanation:

tornadoes can dogs when they are in the air which then form strong thunderstorms

Answer:

it's true ..

Explanation:

they r caused by weather conditions

electrons are one of the ________, or pieces, that make up an atom

Answers

Answer:

Components

Explanation:

Wish it helps

What happens to the atoms that make up hydrogen fuel as it burns?

Answers

Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

When hydrogen fuel burns, its atoms combine with oxygen atoms to form water molecules. So the atoms that make up hydrogen fuel become part of the water molecules.

Use the picture below to answer the question.
Comparing the two waves, wave B has a...

A) higher frequency.
B) greater amplitude.
C) shorter wavelength.
D) longer wavelength.

Answers

Answer: D) longer wavelength.

Explanation:

A) higher frequency and C) a shorter wavelength.

As far as I know, you calculate frequency on a graph using the number of peaks you can see. Since the wavelength is shorter (the distance between two peaks on the wave), the frequency should also be higher as more fit on the graph.

Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of the atom, but they are not in the correct order.

In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one?

Y, X, Z, W
Y, Z, W, X
W, Z, X, Y
W, Y, Z, X

Answers

The answer is: Y,X,Z,W

Answer:

Explanation:

?What statement best describes the arrangement of the atoms in an ethylene molecule?

Answers

Answer: Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

How can the rate of a reaction be decreased?
Responses

A: having more surface area

B: lowering the amount of reactants

C: adding a catalyst

D: raising the temperature

Answers

B: lowering the amount of reactants

It’s B ! Lowering the amount of reactants.

Match each letter with the correct label. Use the atom diagram below.

Electron - Nucleus - Proton - Neutron

Answers

D= nucleus
C= protons
B= neutron
A= electron

Answer:

Explanation: First and foremost, we must carefully examine the provided diagram in order to properly name the sections of an atom diagram.

Step-by-step instructions are given along with the answers in sequential sequence.

Correct answer for (A) is Electron since they are present at the outermost shell of an atom.The correct answer for (B) is Neutron since it is the central element of an atom.The proton is the right answer for (C), as it is included in the nucleus grouping with the neutron.The nucleus is the correct option for (D) since it is the primary component of the atom and includes both protons and neutrons.

Learn more about the Atom here:

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Which contains all the known elements and information about them?
A.the elements chart
B.the modern table
C.the periodic table of elements
D.none of the above

Answers

C. The periodic table of elements

Which statement best describes how energy and matter move in a wave?
A
A wave transports energy without transporting matter.

B
A wave transports matter without transporting energy.

C
Neither energy nor matter is transported by a wave.

Answers

Answer:

A wave e transports energy without transporting matter

Answer:

the answer is A. a wave transpory energy without transporting matter

can someone help me with it

Answers

Answer:

wind is free fuel and government taxes on its uses are lower than those on fossil fuel use

I think it’s the first one

What happened when the two substances were combined together in the cup? (highlight one)
The substances changed into different substances.
The substances did not change into different substances.
I am not sure if the substances changed into different substances.
Explain your answer using evidence from the Sim.

Answers

Based on evidence from Sim, when two substances were combined they did not change into different substances.

Here the word Sim is used to describe the process simulation. Simulation is defined as when two substances combined they do not change into different substances.

They just combine together and form a new substance.

Let us understand it as the first substance is liquid and the second substance is solid then when we combine both of them they form a new mixture but do not change their property.

The mixture is still liquid but it also has some properties of solid substance.

For more details about Sim,

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The substances did not change into different substances.

Based on the information provided in the question, there is no evidence or indication of any chemical reaction or change in the substances when they were combined in the cup. The question does not mention any observations or effects that would suggest a chemical transformation.

If there were a chemical reaction or change, it would typically be accompanied by observable signs such as color change, gas production, temperature change, or formation of a precipitate. However, since the question does not provide any evidence or observations of such changes, we can conclude that the substances did not undergo any chemical transformation when combined.

It is important to note that without additional information or details about the substances and their behavior, it is not possible to make definitive conclusions. However, based on the given information, the most reasonable conclusion is that the substances remained unchanged when combined in the cup.

To learn more about substances, here

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(Science) Please help with question 3.

Answers

I believe that the answer is A, as it is a mixture.

A because lemonade is a mixture

How many molecules of hydrogen (H2) and Oxygen (O2) are needed to make
eight water molecules with no leftovers?

Answers

Answer: 8 oxygen, 16 hydrogen

Explanation:

One oxygen mixed with two hydrogen makes water, which gives us the simple relation of 1:2 multiply by the variable at hand, in this case 8, which gives us 8 oxygen, 16 hydrogen

8 oxygen and 16 hydrogen

How do particles in matter change when a substance becomes hotter, cools down, or changes state?

Be sure to include the three main points of a scientific explanation:

A scientific claim
Evidence to support the claim
Reasoning that connects the evidence to the claim

Answers

$ \LARGE{ \underline{\underline{ \sf{\blue{Required \: answer:}}}}}$

When a substance becomes hotter or cooler or change in state due to external change in energy, few changes takes place like:

Change in Interparticular force of attraction.Change in distance between voids.

When Energy is supplied:

A substance becomes more hot and changes it state i.e. Solid to liquid, or liquid to gas in normal conditions.

External energy is supplied.Average kinetic energy increases.The particles gets excited.They start moving farther increasing their Interparticular force of attraction.They makes some changes in shape & volume.

When Energy is taken away:

A substance becomes colder and changes it state i.e. gas to liquid, or liquid to solid in normal conditions.

Energy is taken away from the matter.Average kinetic energy decreases.The particles move closer to each other.The Interparticular force of attraction now increases because they are near to each other.This increases the density and make it compact.

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help pls i will give brainlest

Answers

Answer: its 5ft tall and 12 inches

Explanation:

The answer is 5 foot 12 inches

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