Calcium oxide is produced in a combination reaction. How many grams of oxygen is required to react with 23.455 grams of calcium?

What is the simplest form of matter that can exist under lab conditions

What volume (mL) of 7.48x10 - 2 M phosphoric acid can be completely reacted with 115 mL of. 244 M sodium hydroxide? Hint: balance equation

The wavelenght of a wave is 0.5 meters, and its period is 2 seconds. what is the speed of this wave?

How many moles of pcl5 can be produced from 55.0 g of cl2 (and excess p4) ? express your answer to three significant figures and include the appropriate units?

352L of chlorine under a pressure of 680. mm Hg are placed in a container under a pressure of 1210 mm Hg. The temperature remains constant at 296 K. What is the volume of the container in liters?

An organic compound is one that contains the element carbon. true or false

Most thermal energy in the atmosphere is transferred by what

Identify water. weak electrolyte, weak acid nonelectrolyte strong electrolyte, strong acid weak electrolyte, strong acid strong electrolyte, weak acid

What is the atomic weight of a hypothetical element consisting of two isotopes, one with a mass of 62.2 u which is 24% abundant, and the other with a mass of 64.0 u?

A pure compound contains 24 g C, 4 g H, and 32 g O. If no other elements are present, determine the empirical formula of the compound. Be sure to show your work.