Question

1. What is 7.63 x 10-3 written in standard form?

2. A box contains 4 x 103 paper clips. The mass of each paper clip in the box is 6 x 10-4 kilogram. What is the combined mass of the paper clips in the box?

3. Balance the following equation with the SMALLESTWHOLE NUMBER COEFFICIENTS possible. Select the number that is the sum of the coefficients in the balanced equation:

___KClO3 → ___KCl + ___O2

4. What is the total mass of products formed when 8 grams of CH4 is burned with excess oxygen?

5. How many grams of H2O will be formed when 64.0 g H2 is allowed to react with 16.0 g

O2 according to 2 H2 + O2 → 2 H2O

6. Identify the simplest formula for a hydrocarbon that is 20.0 percent hydrogen by mass.

7. What will be the molality of the solution containing 19 g of HCl gas in 500 g of water?

8. Calculate molarity of 80% (W/V) H2SO4 having density 1.98g/ml.

9. What will be the molarity of a solution which contains 11.7 g NaCl (s) per 500 mL?

10. If 500mL of a 2M solution is diluted to 1000mL, what will be the molarity of the solution obtained?







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Answer 1

Answer:

500000000000000/2000000000/30000000/4000/8000000