Why are the average atomic masses of some of the elements in parentheses?

Table salt, nacl (s), and sugar, c12h22o11 (s), are accidentally mixed. a 3.50-g sample is burned, and 2.40 g of co2 (g) is produced. what was the mass percentage of the table salt in the mixture?

What does henry miller mean when he says "Life moves on, whether we act as cowards or heroes"?

Suppose you increase your walking speed from 7 m/s to 14 m/s in a period of 2 s. What is your acceleration?

How many grams of sulfur would be a typical amount in a 60. kg adult?

How many additional electrons can fit into the n = 3 shell of sulfur (S) ?

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?

What is not needed for corrosion of metals? a. oxygen c. water b. ions d. sunlight

What force can move the oceans