How many molecules are there in 21.4 grams of Ca (OH) 2?

What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute? 0.80 M 0.13 M 5.0 M 0.25 M

When 2 grams of hydrogen react with 32 grams of oxygen the reaction yields hydrogen peroxide how many grams of H202 are produced in this reaction A) 3 grams B) 24 grams C) 30 grams D) 34 grams

For the reaction represented by the equation cl2 + 2kbr ® 2kcl + br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.

A 650.0 g hard-water sample contains 101 mg Ca. what is this concentration in parts per million

3 ways atoms can become more stable?

A compound is found to have a composition of 70.4% carbon and 29.6% hydrogen, by mass. what is the empirical formula for the compound?

As you go down a family or group on the periodic table * the atoms become smaller and smaller. the elements become less reactive. the elements become more reactive. the atoms have more and more valence electrons.

What is the name of the horizontal rows in the periodic table?

Matter that has a uniform and definite composition is called?

Identify eight major tectonics plates by writing their names