How many moles of CaO are needed to react with excess water to produce 370g of calcium hydroxide?

What mass (in mg) does 2.63 moles of nickel have? 3.56 * 105 mg 1.54 * 105 mg 2.23 * 104 mg 129 mg?

Lisa wrote the following steps in the formation of metamorphic rocks. Step 1: Rocks pushed up onto Earth's surface due to movement of tectonic plates Step 2: Rocks experience extreme heat and pressure Step 3: Mineral composition of rocks changes

The pressure at the center of the earth is probably greater than 3x106 atm, and the temperature there is about 4000 °C.

What is the density of 0.50 grams of gaseous carbon stored under 1.5 atm of pressure at a temperature of - 20.0 C?

What is the oxidation number of Mn in Ca (MnO4) 2

Potassium ions (k+) have a positive charge. What happens to a potassium atom electrons when it becomes an ion

At what pH do you think acids become too dangerous to touch? Basis? Explain your answers.

How do endothermic processes differ from exothermic processes

Before a race, an athlete warms up by jogging around the track shown below at a constant rate of 2.3 m/s. What statement best describes his motion as he jogs around the curved part of the track?

What physical property is changed when a waitress pours coffee from a pot into four mugs? temperature density volume color