Question

Need help very fast on this hard question

A sample of baking soda contains 34.48 g of sodium, 1.51 g of hydrogen, 18.02 g of carbon, and 72.00 g of oxygen.

a. What is the total mass of the sample? ______________g

Remember the addition rule for sigfigs

b. What is the percent by mass of each element in baking soda? Remember the sigfig rule for division

Sodium ______________%

Hydrogen ______________%

Carbon ______________%

Oxygen ______________%

Follow sigfig rules for division; answers will be marked incorrect by the computer if you do not use the correct sigfigs in your final answer

Answer 1

The total mass is "126.01"

The sodium is "0.2736"

The hydrogen is "1.20"

The carbon is "14.30"

The oxygen is "57.14"

- From my chemistry teacher, we did this in class