The [ HCl ] after 23 s was 0.167 mol / L. After 142 s, the [ HCl ] was 0.463 mol / L. Calculate the rate of reaction.

A volume of gas occupies 3.2 L at 2.8 kPa. What would the pressure be if the same volume of gas now occupied 8.1 L?

Bromine boils at 59ºC is this a physical or chemical change?

What is the molarity of a solution that contains 6 moles of NaCl in 3 L of solution? a 2.0 M b 0.5 M c 0.25 M d 18.0 M

At what temperature does ice melt? is it true for all ice?

How many grams of H 3 PO 4 are produced when 10.0 moles of water react with an excess of P 4 O 10?

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