What does the number 84 in the name krypton-84 represent

What mass of agcl is produced by mixing 25.0 ml of 1.00 m agno3 with 25.0 ml of 1.00 m nacl?

Consider the reaction 2no2 (g) → n2o4 (g) and δg∘ (no2 (g)) = 51.84 kj/mol, δg∘ (n2o4 (g)) = 98.28 kj/mol. calculate δg at 298 k if the partial pressures of no2 and n2o4 are 0.38atm and 1.64atm, respectively.

A person drinks eight glasses of water each day, if each glass contains 300 milliliters how many liters of water does a person drink in a year?

An atom of 110I has a mass of 109.935060 amu. Calculate its binding energy per MOLE in kJ. Enter your answer in exponential format (1.23E4) with 3 significant figures and no units. Use the masses: mass of 1H atom = 1.007825 amu mass of a neutron = 1.

Explain why hydrogen and oxygen are considered elements whereas water is not considered an element.

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction.

Calculate the vapor pressure lowering on an aqueous solution of glycerin that contains 180g of glycerin and 1000g of water at 25c. The vapor pressure of water at this temperature is 23.8torr.

Why does one Oxygen atom bond with two Hydrogen atoms to form water? Why don't they bond in a different ratio?

A fossilized bone contains about 65% of its original carbon-14. to the nearest hundred years, how old is the bone

Calculate the mass of 1.25 moles of Al2 (SO4) 3