1.Do not show your work in the space provided; with the correct number significant digits and the proper units.)

Question

1.Do not show your work in the space provided; with the correct number significant digits and the proper units.)

If you need to review the concept of molar mass, select here.

A. Using the periodic table, the calculated molar mass of is Answer

g/mol

B. Using the periodic table, the calculated molar mass of is Answer

g/mol

C. Using the periodic table, the calculated molar mass of is Answer

g/molDo not show your work in the space provided; record only your final answer with the correct number significant digits and the proper units.)

If you need to review the concept of molar mass, select here.

A. Using the periodic table, the calculated molar mass of is Answer

g/mol

B. Using the periodic table, the calculated molar mass of is Answer

g/mol

C. Using the periodic table, the calculated molar mass of is Answer

g/mol

2.Calculate the number of moles for each of the following. Remember to round your answer to the correct number of significant digits. And include proper units for your answer.

A)4.51 g of methane

B)6.3 g of copper(II) nitrate

3.Calculate the mass for each of the following questions. Remember to round your answer to the correct number of significant digits and include the correct units

A)3.65 mol of oxygen

B)4.69 mol of sodium carbonate

In previous science courses, you were taught about the Particle Theory of Matter. For each of the following sentences, select the word that completes correctlythe statement about this theory

All matter is made up of tiny Answer

atoms

particles

elements

.

b. All particles within a pure substance are Answer

similar

different

.

c. Different substances are made up of Answer

similar

different

particles.

d. Particles are always moving. The more energy, the Answer

slower

faster

they move.

e. Attractive forces occur between particles. Forces are stronger when particles are Answer

closer together

further apart

.

Answer 1

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