1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gogolik [260]
3 years ago
9

What does a mass number mean and what does an atomic number mean?

Chemistry
1 answer:
lakkis [162]3 years ago
3 0
Mass number is the mass number of that particular Element found in the periodic table and the atomic number is the atomic no. Again found in the periodic table
You might be interested in
To what category of elements does an element belong if it is a poor conductor of electricity
Yuri [45]

I was wondering the same thing my dude

3 0
3 years ago
Which of these types of changes is a physical change?
Leto [7]

The correct answer is A. Can I get the Brainliest?

6 0
2 years ago
Read 2 more answers
N2(g) + 3H2(g) → 2NH3(g) How many grams of N2 are required to produce 240.0g NH3?
just olya [345]

Answer:

\large \boxed{\text{197.4 g}}

Explanation:

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:     28.01               17.03

            N₂ + 3H₂ ⟶ 2NH₃

m/g:                          240.0

(a) Moles of NH₃

\text{Moles of NH}_{3} = \text{240.0 g NH}_{3}\times \dfrac{\text{1 mol NH}_{3}}{\text{17.03 g NH}_{3}}= \text{14.09 mol NH}_{3}

(b) Moles of N₂

\text{Moles of N$_{2}$} = \text{14.09 mol NH}_{3} \times \dfrac{\text{1 mol N$_{2}$}}{\text{2 mol NH}_{3}} = \text{7.046 mol N$_{2}$}

(c) Mass of N₂

\text{Mass of N$_{2}$} =\text{7.046 mol N$_{2}$} \times \dfrac{\text{28.01 g N$_{2}$}}{\text{1 mol N$_{2}$}} = \textbf{197.4 g N$_{2}$}\\\\\text{The reaction requires $\large \boxed{\textbf{197.4 g}}$ of N$_{2}$}

7 0
3 years ago
Read 2 more answers
How is the formula for hydrogen different from the formula for helium gas​
creativ13 [48]
Helium is monotonic
4 0
3 years ago
Which statement is true when considering color in a fiber?
Arisa [49]
The color is an effect as a result of different wavelengths and frequencies of the light waves. So, color is a property of an object that depends on the wavelength.  From all the given statements the following is true: T<span>he color depends upon the lighting source. More precisely, the color depends upon the wavelength of the lighting source.</span>
5 0
3 years ago
Other questions:
  • Which distance units are in order from smallest to largest?
    6·1 answer
  • A sports car and a fully loaded semi truck pull side by side at a red light. Using your knowledge of acceleration, predict which
    12·1 answer
  • Why are valence electrons important when considering the bonds that form between atoms g
    11·1 answer
  • 10. Bands of rock on the seafloor showing alternating magnetic orientation indicate Earth's magnetic field has ____.
    10·1 answer
  • Which astronomer spent 20 years plotting the positions of the planets?
    13·1 answer
  • Most organic acids can be represented as RCOOH, in which COOH is the carboxyl group and R is the rest of the molecule. (For exam
    15·1 answer
  • Calculate the amount of energy that is absorbed by 75 g.. water
    11·1 answer
  • Please help me!! PLEASE
    11·1 answer
  • Hello please help me on this problem thanks.sc​
    5·1 answer
  • Which reaction is the opposite of a decomposition reaction?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!