Answer:
0.187 mol
Explanation:
A solution is created by dissolving 10.0 grams of ammonium chloride in enough water to make 315 mL of solution.
The formula of ammonium chloride is NH₄Cl and its molar mass is 53.49 g/mol. We can use this information to calculate the moles of ammonium chloride associated with 10.0 grams.
10.0 g × (1 mol/53.49 g) = 0.187 mol
After 3 half life periods you would have 5 grams of krypton left because half of 40 is 20 half of 20 is 10 and half of 10 is 5
Explanation:
Water is a polar solvent as the hydrogen and oxygen atom has large difference in their electronegativities.
Oxygen atom is highly electronegative as compared to hydrogen atom therefore, it pulls the electrons of hydrogen atom closer towards itself.
As a result, two poles will create forming a partial positive charge on the hydrogen atom and partial negative charge on the oxygen atom.
Thus, we can conclude that high electronegativity difference between oxygen and hydrogen is the cause of polarity in water molecules.
During photosynthesis, plants take the extra carbon from the air, make it into oxygen and then release the oxygen back into the air for us to breathe. The process of photosynthesis can help reduce global warming by removing the extra carbon in the air which allow the air levels in the atmosphere to be more balanced .
Water
Water is a compound because it is made from more than one kind of element (oxygen and hydrogen).
