What is the mass of Ca (NO3) 2?

Water contracts as it freezes at 0°C. Solid ice is less dense than liquid water. Liquid water expands with increasing temperature between 0°C and 4°C. Liquid water expands with increasing temperature above 4°C.

Give 2 reasons why we shouldnt mix chemicals just to see what will happen in the lab

How to calculate IMA

According to the Kinetic Molecular theory, gas molecules are so far apart that they?

Based on its location on the periodic table, how many electrons does nitrogen have in its outer energy level?

A container with a volume of 3.46 liters contains a gas at a pressure of 1.30 atmospheres and a temperature of 274.27 Kelvins. How many moles of gas are in the container?

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?