Answer to Question #248121 in General Chemistry for grey tyrant

Question

Task: Answer the following use separate paper to compute your answer.

1. What is the mass in grams of 3.61 x 1022 atoms of

Xe c. Au e. K

N d.Sc

2. Find the mass of 0.25 moles of the following substances

K2CrO4 c. SiH4

CH4 d. AlPO4 e. Ba(OH)2

3. How many moles are in 250 grams of

PbSO4 c. CH3CHO

Fe2O3 d. CH3CH2OH

4. Calculate the mass in grams of one molecule of

Bromine, Br c. Water, H2O

Sulfur, S8 d. Carbon disulfide, CS3

5. The gem emerald is a pure crystal of the mineral beryl, Be3Al2(SiO3)6 How many atoms of beryllium would be in 134.35 grams of beryl?

6. Which among the following amounts contains the most number of atoms?

a. 2.0 grams of potassium metal

b. 0.3 moles of hydrogen atoms

c. 1.204 x 1021 atoms of sulfur

d. 1.27 grams of iodine

7. What is the mass of oxygen combine with 15.76 g of gold in a sample of gold oxide, AuO2?

Answer 1

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