Answer:
Volume is 10.35 L
Explanation:
we are given;
- Initial volume v₁ is 10 L
- Initial pressure, P₁ as 745 mmHg
- New pressure ,P₂ as 720 mmHg
We are required to determine the new volume, V₂
We are going to use the Boyle's law;
According to Boyle's law the volume and the pressure of a fixed mass of a gas are inversely proportional at a constant temperature.
Therefore;
P₁α 1/V
That is;
P = k/V
k = PV
At different conditions;
P₁V₁ = P₂V₂
Rearranging the formula;
V₂ = P₁V₁ ÷ P₂
Thus;
New volume = (10 L× 745 mmHg) ÷ 720 mmHg
= 10.35 L
Thus, the new volume of the gas at the new pressure is 10.35 L
The protons are equivalent to the atomic number, so we can determine that the element being expressed here is Magnesium. If you are ever stuck on what element you are finding your information from, just remember that the number of protons is the exact same as the atomic number in ANY situation :)
The charge of magensium is +2, with an atomic mass of 24. So A would be your answer :)
I believe the answer is D
The side of each water molecule with the oxygen atom uncovered will be marginally negative.
The side of each water molecule with the hydrogen atoms uncovered will be marginally positive.
So the two Cl{-} particles will be pulled in to the biggest number of positive charges, which happen in the boxes on the upper right and lower left.
The two Na{+} particles will be pulled in to the biggest number of negative charges, which happen in the boxes on the upper left and lower right.
