Answer:
First check to make sure you have a balanced equation
Second use mole ratios to set up what you need to know
Finally convert the moles to grams using the correct molecular weight
I will get you started
According to the reaction above, one mole of Magnesium Nitrate is produced from 2 moles of Nitric Acid
1 mole of Mg(NO3)2/2 moles of HNO3
5 grams of Nitric acid contains
5 g * 1 mole/63 g of Nitric Acid = 0.079365079 moles
Explanation:
Answer:
P₂ = 1530.1 KPa
Explanation:
According to Bolye's Law,
The volume of given mass of a gas is inversely proportional to the pressure applied on it at a constant temperature.
V∝1/P
V = kP
V = K/P
PV = k
According to this equation,
P₁V₁ = P₂V₂
Given data:
Initial volume = 456 dm³
Initial pressure = 101 KPa
Final volume = 30.1 dm³
Final pressure = ?
Solution:
Formula:
P₁V₁ = P₂V₂
P₂ = P₁V₁ / V₂
P₂ = 101 KPa × 456 dm³ / 30.1 dm³
P₂ = 46056 / 30.1 dm³
P₂ = 1530.1 KPa
The pH of the buffer solution : 2.433
<h3>Further explanation
</h3>
A buffer solution is a solution that can maintain a good pH value due to the addition of a little acid or a little base or dilution.
The buffer solution can be acidic or basic
Acid buffer solution consists of weak acids (H₃PO₄) and their salts(NaH₂PO₄)
![\tt [H^+]=Ka\times\dfrac{[\:weak\:acid]}{[salt]\times valence}](https://tex.z-dn.net/?f=%5Ctt%20%5BH%5E%2B%5D%3DKa%5Ctimes%5Cdfrac%7B%5B%5C%3Aweak%5C%3Aacid%5D%7D%7B%5Bsalt%5D%5Ctimes%20valence%7D)
valence according to the amount of salt anion
[H₃PO₄]=0.00650 M
[NaH₂PO₄]=0.0125 M
![\tt [H^+]=7.1.10^{-3}\dfrac{0.0065}{0.0125}\\\\(H^+]=3.692.10^{-3}\\\\pH=-log[H^+]\\\\pH=3-log3.692\\\\pH=2.433](https://tex.z-dn.net/?f=%5Ctt%20%5BH%5E%2B%5D%3D7.1.10%5E%7B-3%7D%5Cdfrac%7B0.0065%7D%7B0.0125%7D%5C%5C%5C%5C%28H%5E%2B%5D%3D3.692.10%5E%7B-3%7D%5C%5C%5C%5CpH%3D-log%5BH%5E%2B%5D%5C%5C%5C%5CpH%3D3-log3.692%5C%5C%5C%5CpH%3D2.433)
Answer:
A
Explanation:
the answer is A because when your working cooperative people are helping you and non cooperative is where people are working against you by them selves
