C.
Nuclear fission involves the high energy collision of two atomic nuclei to produce one larger nucleus; this process powers stars.
Answer:
I hope it helps u
Explanation:
The advantages of using natural gas rather than coal are the following,
- Natural gas is present in large amount than coal.
- Natural gas is less costly than other fossil fuel sources of energy.
- It increases security by decreasing dependence.
- Natural gas is more environmentally friendly.
- Natural gas is much safer to store.
- It is reliable.
- Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil.
- Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new, efficient natural gas-power plant compared with emissions from a typical new coal plant.
Answer:
Melting snow more efficiently in winters, understanding the components of mineral water
Explanation:
Let's split this question into two parts. First of all, ionic bonds:
- an example would be the application of the freezing point depression law. Remember that adding a solute to a specific solvent would decrease the freezing point of a solvent. This is the reason why we add ionic salts, NaCl, to snow in order to make it melt. Knowledge of the fact that 1 mol of NaCl, an ionic compound, dissociates into 2 mol of ions, sodium and chloride, yields us a van 't Hoff factor of 2 rather than 1 for non-electrolytes, molecular compounds. This means the same molality of ionic compounds would produce a twice larger decrease in the freezing point of a solvent;
- an example for ionic naming is more trivial. Remember the difference between, say, calcium and calcium cation. Sometimes we may read that mineral water is full of calcium. Having chemical knowledge of ionic compound naming would lead us to a conclusion that this is wrong! Mineral water doesn't have any calcium in it, we don't see any metal in mineral water. However, mineral water contains calcium cations,
and not
.
To find the number of molecules, you need to first convert the mass into number of mol using the molar mass of SO2, simply add the atomic masses of each element and the number of times each element appears in the formula from the periodic table.
Then divide the mass by that value and then use Avogadro’s number to find the molecules.
Multiply by 6.02 x 10^23 Molecules.