How many moles of silver atoms are in 1.8 * 1020 atoms of silver?

3.0 * 10-4

3.0 * 102

3.3 * 10-3

1.1 * 1044

A solution contains 0.115 mol h2o and an unknown number of moles of nacl. the vapor pressure of the solution at 30°c is 25.7 torr. the vapor pressure of pure water at 30° c is 31.8 torr. calculate the number of moles of nacl

3. What letter interval represents a solid-liquid equilibrium?

Three components of soil?

Rutherfordium has atomic number of 84 how many protons and electrons does it have

Where do chromodynamic bacteria get their energy am I now

Pure aluminum metal has a density of 2.70 g/cm

A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g of water and 50.0 g of ice, both at 08C. The reaction is 2Na (s) 1 2H2O (l) 88n 2NaOH (aq) 1 H2 (g) DH 5 2368 kJ

How many moles of N are in 0.203 g of N2O?

An atom has a charge of +1 in its nucleus. Which statement must be true in order for this atom to have no net charge? A. The one positive proton has no influence on the overall charge of the atom. B.

A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of the reaction is given below. What is the concentration of NaOH that is used?