25 points , hi! please look at the attachment for the question, I'm having a hard time because all I have to do is solve through those 2 problems but I'm not sure if I solve the fractions first then multiply that result by 100 or what. I asked my teacher which she helped a little but I don't think she understood where I was lost. If you can help I would really appreciate it. Thank you.
This was the set up question:
4. If 100.0g of nitrogen gas (N2) is reacted with 100.0g of hydrogen gas (H2) to form NH3. What is the limiting and excess reactants?
Hint: Convert grams to moles for each reactant and then convert to moles of NH3. You need your balanced equation from answer 1 to determine the mole relationship between each reactant and the product NH3. Use the periodic table to determine the molar mass of all chemical formulas. Fill in the “?” blanks below to show your work.

and in the screenshot it has everything I'm working with and the conclusions I need to draw from it, I can draw the conclusions just fine on my own but I need help solving.

Answer:

1.2×10²³ atoms.

Explanation:

Data obtained from the question include:

Mole of propanone = 0.20 mole

Number of atoms of propanone =.?

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.

This implies that 1 mole of propanone also contains 6.022×10²³ atoms.

Thus, we can obtain the number of atoms in 0.20 mole of propanone as illustrated below:

1 mole of propanone contains 6.022×10²³ atoms.

Therefore, 0.20 mole of propanone will contain = 0.2 × 6.022×10²³ = 1.2×10²³ atoms.

Thus, 0.20 mole of propanone contain

1.2×10²³ atoms.

The total number of atoms in 0.20 mole of propanone is 1.2×10²³, i.e. in given mole 1.2×10²³ atoms of propanone is present.

In one mole of any substance 6.022 × 10²³ atoms of that substance will present, and this number is known by the name of Avogadro's number.

We have given moles of propanone = 0.20 mole

No. of atoms present in 0.20 mole of propanone = 0.20  × 6.022×10²³ = 1.2×10²³.

Hence, 1.2×10²³ atoms are present in given moles.

To know more about Avogadro's number, visit the below link:

https://brainly.com/question/10614569

Answer:

D. All of the above

Fluorite is inorganic solid and can be defined by its chemical formula. Thus option D is correct.

Chemical formula is defined as a chemical elements numbers and symbols are used to provide information about the chemical quantities of atoms that make up a certain chemical compound or molecule.

It is also defined as any of numerous statements of a chemical compound's content or structure.

There are mainly three types of chemical formulas.

Thus, fluorite is inorganic solid and can be defined by its chemical formula. Thus option D is correct.

To learn more about chemical formula, refer to the link below:

https://brainly.com/question/11995171

#SPJ5

Answer:

Mechanical engineers design power producing machines, like electric generators, internal combustion engines, and steam and gas turbines, also power using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.

Explanation:

Answer:

2AL(ClO3)3 → 2ALCl3 + 9O2

Explanation:

Answer:

i think its 12, but i'm not 100% sure

Explanation:

Answer:

1. compounds

2. Covalent Compound

3. Not sure

4. ions

5. C

6. false

Answer:

1. compounds

2. Covalent Compound

3. Both substances have the same chemical formula

4. ions

5. C

6. false

Answer:

1. The brain

2. MOUSE / KEYBOARD = HANDS

Explanation:

1.The CPU is like the brain of the body. The CPU controls the computer and is the most important part of a computer; similar to the way the brain controls the human body and is very important. Get it?

2.Both are input devices. They are used to send in instructions and information into and out of the computer.

Hope this helps!

Answer:

12 Ethene gas, CH is completely burned in excess oxygen to form carbon dioxide and water

The equation for this exothermic reaction is shown.

CH 30, - 200, 2H,0

The table shows the bond energies involved in the reaction

bond

bond energy

(kJ/moly

614

413

C-C

CHH

0 0

СО

495

799

O-H

467

What is the total energy change in this reaction?

A-954 kJ/mol

B-1010 kJ/mol

C-1313 kJ/mol

D-1359 kJ/mol

Explanation:

thats all you said

Answer:

exposure to radiation i think

Explanation:

Answer:

J electrons

Explanation:

Electrons are the negatively charged subatomic particles that surrounds the nucleus of an atom.

Answer:

geruow0irghvn3p0unhie0ghik

Explanation:

Answer:

13 +2 =15

Explanation:

Answer:

a and b

Explanation:

Complete Question:

In order to help visualize an atom, a scientist may do which of the following?

Group of answer choices

A. Form a hypothesis.

B. Make a model.

C. Create a law.

D. Develop a theory.  

Answer:

B. Make a model.

Explanation:

An atom can be defined as the smallest unit of matter and it retains all the chemical properties associated with the element.

Basically, atoms are the building block of matters and essentially comprises of three (3) fundamental particles which are protons, neutrons and electrons which typically determines the charge and mass of an atom.

In order to help visualize an atom, a scientist may make a model. Due to the limitations of various human inventions in the field of science, it has become practically impossible to get an image or a picture of an atom even through the use of a microscope because of its minute nature and owing to the fact that it is much smaller than the wavelength of visible light.

However, some notable scientists have created or developed models that aids in the understanding and visualization of atoms. These atomic models are;

1. Quantum mechanics model of atom.

2. John Dalton's atomic model.

3. Neil Bohr's atomic model.

4. Rutherford's model of the atom.

5. Thomson's model of the atom.

6. Plum pudding atomic model.

Answer:

Chemistry is the scientific study of the structure of substances, how they react when combined and how they behave under different situations.

Answer:

The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

Explanation:

Hope this helps!!!!!!

:)

Answer:

there are two significant figures

Explanation:

Answer:

there are two

Explanation:

because the zeros dont count

Answer:

y  = 13x + 4

Explanation:

Given parameters:

number of computer games bought  = x

cost of each games  = $13

number of a magazine  = 1

cost of magazine  = $4

Unknown:

Total amount of money spent = ?

Solution:

The total amount spent;

  let total amount  = y

 y  = total cost of magazine + total cost of computer games

 total cost of magazine  =$4

 total cost of computer games  = 13x

y  = 13x + 4

Answer:

5 mol

Explanation:

by stoichiometry

nN2/1=nNH3/2

2.5=nNH3/2

nNH3=2.5×2

nNH3= 5 mol

Answer: I got 5.0 moles

Explanation:

Answer:

[tex].5865 \\ \\ \\ \\ \\ \5865[/tex]

[tex] \\ \\ 5865 \inf \inft \cos( \\ \) [/tex]

Answer:

Disilicon Hexabromide

Explanation:

A compound H2O is named – Dihydrogen monoxide. Its common name is of course water. A compound of Si2Br6 is named – Disilicon Hexabromide. 2.

Answer:the 4th one is incorrect,and the 1st one is incorrect hope this helps.

Adsorption is defined as a process in which gas molecules tend to adsorb on the surface of a solid solvent.

Therefore, the statement solids are not able to act as a solvent if a gas is the solute, is false.

On the other hand, gases can also act as a solvent if a solid is the solute.

Explanation:

Adsorption is defined as a process in which gas molecules tend to adsorb on the surface of a solid solvent.

Therefore, the statement solids are not able to act as a solvent if a gas is the solute, is false.

On the other hand, gases can also act as a solvent if a solid is the solute.For example, air present in the surrounding acts as a solvent and solid substances present in the surrounding acts as a solute.

Hence, the statement gases are not able to act as a solvent if a solid is the solute, is false.

Thus, we can conclude that following are the statements which are incorrect.

Solids are not able to act as a solvent if a gas is the solute.

Gases are not able to act as a solvent if a solid is the solute.

Answer:

Nothing. I guess ice vapor is a solid and water vapor is a liquid if nothing isn't an option, but that makes no sense.

Explanation:

Answer:

paper plate

Explanation:

A renuable source is a source that would replenish in ones lifetime. Trees make paper and grow in the span of a average human life.

Answer:

c

Explanation:

spongebob cheese pants

Answer:

I believe D

Explanation:

im not super sure but I'm pretttyyy sure

Answer:

30 N

Explanation:

To find force you multiple mass by acceleration. If you multiple 10kg by 3 m/s you then get 30 N.

Answer:

30 N

Explanation:

Force can be found by multiplying the force by the acceleration.

F=m*a

The mass of the bowling ball is 10 kilograms. The acceleration is 3 meters per second squared.

• m= 10 kg

• a= 3 m/s^2

Substitute the values into the formula.

F= 10 kg * 3 m/s^2

Multiply.

F= 30 kg*m/s^2

• 1 kilogram meter per second squared is equal to 1 Newton.

• Therefore our answer of 30 kg*m/s^2 is equal to 30 Newtons.

F= 30 N

The correct answer is B. 30 Newtons.

Answer:

It chemistry babe

Explanation:

Answer:

yes

Explanation:

that is the answer

Answer:

120g

Explanation:

Based on the reaction, when 1 mole of propane and 5 moles of oxygen react, 3 moles of CO2 and 4 moles of H2O are produced. The ratio of production is 3 moles of CO2 per 4 moles of H2O.

Thus, we need to convert mass of water to moles using its molar mass:

Moles H2O (Molar mass: 18g/mol):

63g H2O * (1mol / 18g) = 3.5 moles H2O

Converting to moles of CO2:

3.5 moles H2O * (3 moles CO2 / 4 moles H2O) = 2.625 moles CO2

Mass CO2 (Molar mass: 44g/mol):

2.625 moles CO2 * (44g / mol) = 115.5g of CO2 are released