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Chapter Review Calculations

Last updated almost 4 years ago

9 Nsɛmmisa

6

6

6

6

6

6

6

6

24

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

Convert 23.917 grams of methane gas to molecules of methane(CH₄).

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2.

Convert 2.229x10²⁴ atoms of lithium to grams of lithium(Li).

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3.

Convert 4.91 grams of hydrogen peroxide to molecules of hydrogen peroxide(H₂O₂).

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4.

Convert 5.41x10²⁴ atoms of nickel to grams of nickel(Ni).

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5.

In the compound NaC₂H₃O₂, what percent is sodium?

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6.

In the compound NaC₂H₃O₂, what percent is carbon?

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7.

In the compound NaC₂H₃O₂, what percent is hydrogen?

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8.

In the compound NaC₂H₃O₂, what percent is oxygen?

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9.

Identify the type of representative particle for each substance.

CH₄
FeCl₃
Ne
helium
MgO
argon
water
lithium
NaOH
Al(NO₂)₃
C₆H₁₂O₆
NH₃

atom
molecule
formula unit