How do you determine the mass number of an atoms

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g/cm3. (1cm3 = 1ml) select one: a. 18.5 ml b. 23.6 ml c. 42.4ml d. 31.2 ml

How many grams of cu would be needed to react with 2 mol hno3

How many grams of carbon are present in 45.0 g of CCl4?

A solution that is 33.6 % by mass of phenol (C6H5OH) in water is prepared. What is the mole fraction of the phenol?

How many atoms are in 131.97 liters of water vapor at STP? A) 6.023 * 1023 B) 3.54846 * 1024 C) 3.548 * 1024 D) 1.0645 * 1025

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.

What is the new concentration, after diluting 300 mL of a 1.5 M LiCl solution to 1L

The answer that he gave was wrong

In which orbital does an electron in a bromine atom experience the smallest?