Se - 78
Selenium - 78
or
78/34 Se2-
90 degrees
As temperature increases, rate of reaction increases :)
Answer:
1) Add more sulfate ions.
2) 1 M K₂SO₄.
Explanation:
<em>1) Which of the following actions would shift this reaction toward solid barium sulfate?</em>
<em></em>
- Le Châtelier's principle states that if a stress is applied to a system at equilibrium, the system will shift to relieve that stress and attain the equilibrium again.
Add more sulfate ions will increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.
<em>So, the right choice is: Add more sulfate ions.</em>
<em></em>
<em>2) In which of the following would barium sulfate be least soluble? </em>
The answer is 1 M K₂SO₄, it has a common ion effect of SO₄⁻ ions that increase the concentration of the products side, so the reaction will be shifted towards the reactants side to relieve the stress and attain the equilibrium again.
<em>So, the solubility will decrease.</em>
1 Pascal is equal to 0.008 Torr. So if you have 234 kilopascals, then
234 kilopascals ( 1000 Pascals/ 1 kilopascals) (0.008 Torr / 1 Pascal) = 1,872 Torr
An atom can be changed into an ion by adding or removing ELECTRONS.
