Answer:
Following are the solution to the given points:
Explanation:
In point a, the answer is only ions because of 
has a strong electrolyte.
In point b, the answer is the only molecules because of ethanol 
, it has a nonelectrolyte.
In point c, the answer is the few ions because of hydrocyanic acid HCN, which has a weak electrolyte.
The area used to be covered by an ocean
Answer:
Crushing a can.
Melting an ice cube.
Boiling water.
Mixing sand and water.
Breaking a glass.
Dissolving sugar and water.
Shredding paper.
Chopping wood.
Answer is: the molar mass of gas is 82.83 g/mol.
m(gas) = 55.50 g; mass of gas.
V(gas) = 15.0 L; volume of gas.
Vm = 22.4 L/mol; molar volume of gas on STP.
n(gas) = V(gas) ÷ Vm.
n(gas) = 15 L ÷ 22.4 L/mol.
n(gas) = 0.67 mol; amount of gas.
M(gas) = m(gas) ÷ n(gas).
M(gas) = 55.5 g ÷ 0.67 mol.
M(gas) = 82.83 g/mol.
We have<span> been looking at the wave properties of electromagnetic radiation. ... the</span>wavelength<span> and </span>frequency<span> of </span>photons<span> with the following energies: E</span>photon<span>=1200 eV (x-ray) 1.0 </span>nm3.0x10-17 Hz; Ephoton=4.2x10-19<span> J (blue ... MeV</span>/c2<span> ) 8.2</span>x10-14 J 0.51 MeV; Proton (1.67x10-27<span> kg)</span>1.5x10<span>-10 J 0.94</span>
