contestada

Mole-Atom Conversions
1. How many moles are 1.55 x 1027 atoms of Zinc (Zn)?



2. How many atoms are in 25.0 moles of calcium (Ca)?



3. How many atoms are in 0.35 moles of carbon (C)?



4. How many moles are 7.6 x 1024 atoms of Helium?





Mole-Mass Conversions
How many moles in 28.o grams of Oxygen?




What is the mass of 5.0 moles of Iron?




Find the number of moles of argon in 452 g of argon.





Find the grams in 16.5 mol of Hydrogen.

.

Respuesta :

bobolove587
1.---------2.24
2.-------5.6
3.-------2x10^24
4.------1.5
hope this helped!
samueladesida43

The answers to the mole-atom and mole-mass conversions are as follows:

  1. 2.6 × 10³ moles of Zinc
  2. 1.51 × 10²⁵ atoms of Ca
  3. 2.11 × 10²³ atoms of C
  4. 12.6 moles of He
  5. 1.75mol
  6. 280g of Fe
  7. 11.33mol of Argon
  8. 16.5grams of H

HOW TO CALCULATE MOLE-ATOMS QUESTIONS?

Mole-atom questions can be calculated using the following expression;

no. of atoms = no. of moles × 6.02 × 10²³

QUESTION 1:

Number of moles in Zinc is calculated as: 1.55 x 10²⁷ atoms ÷ 6.02 × 10²³

= 2.6 × 10³ moles of Zinc.

QUESTION 2:

The number of atoms in 25 moles of Calcium is 25 × 6.02 × 10²³

1.51 × 10²⁵ atoms of Ca.

QUESTION 3:

The number of atoms in 0.35 moles of carbon (C) is 0.35 × 6.02 × 10²³

2.11 × 10²³ atoms of C

QUESTION 4:

The number of moles in 7.6 x 10²⁴ atoms of Helium is 7.6 × 10²⁴ ÷ 6.02 × 10²³

= 1.26 × 10¹ = 12.6moles of He.

QUESTION 5:

The number of moles in 28.0 grams of oxygen is 28g ÷ 16g/mol = 1.75mol

QUESTION 6:

The mass of 5.0 moles of Iron (Fe) is 5moles × 56g/mol = 280g

QUESTION 7:

The number of moles of argon in 452g of argon is 452g ÷ 39.9g/mol = 11.33mol

QUESTION 8:

The grams in 16.5 mol of hydrogen is 16.5mol × 1 = 16.5grams.

Learn more about mole-atom and mole-mass conversions at: https://brainly.com/question/9743981

Otras preguntas