The mass number of an element is the sum of the number of

A material has a density of 8.9g/cm3. You have six cubic centimeters of the substance. What is the materials mass in grams

You have 36.8 g of o2 gas in a container with twice the volume as one with co2 gas. the pressure and temperature of both containers are the same. calculate the mass of carbon dioxide gas you have in the container.

How many orbitals are in a d sublevel?

Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water. N2H4 (aq) + O2 (g) - --> N2 (g) + 2H2O (l) If 2.05g of N2H4 reacts and produces 0.550 L of N2, at 295K and 1.00 atm, what is the percent yield of the reaction?

What are the three basic steps that scientist use to conduct a scientific investigation

An 80 kg volleyball player lands from a jump and tries to stop her forward motion. The normal contact force exerted by the floor on her shoes is 2000 N. The friction force exerted by the floor on her shoes is 600 N acting backward on the player.

How does electronegativity affect the polarity of the bond between two atoms?

How much heat (energy) would need to be absorbed by 1.5 g of liquid water to cause a temperature change of 30.45 °C? The specific heat of water is 4.18 J/gºC.

What happens when electrons are passed from one atom to a more electronegative atom?

Calculate the k sp for zinc hydroxide if the solubility of zn (oh) 2 in pure water is 2.1 * 10-4 g/l. calculate the k sp for zinc hydroxide if the solubility of zn (oh) 2 in pure water is 2.1 * 10-4 g/l. 2.9 * 10-3 1.5 * 10-3 9.9 * 10-18 3.8 * 10-17