Other Chemistry Answers

This question is on equilibrium.

(a) Many chemical processes release waste products, such as carbon dioxide into the atmosphere. Scientists are developing new catalysts to convert these emissions into useful products, such as fuels.

CO₂(g)+ 3H₂(g) ⇌ CH₃OH(g) + H₂O(g) ∆H = −49 kJ mol^-1

(i) Use Le Chatelier’s principle to explain why the reaction is carried out at a

high pressure rather than at atmospheric pressure.

(ii) A copper catalyst is employed to speed up the reaction, but it does not have any effect on the position of equilibrium. Explain why.

(iii) The reactions is carried out at low temperatures 270-280 K. Explain why this is ideal in terms of the equilibrium

What is the density of a piece of metal if a 4.25 cm³ piece has a mass of 12.5 g ?

115.24g of isopropyl alcohol at 20.1 degrees is mixed with 56.31g of water at 50.3 degrees after thermal equilibrium was reached, the temp was 36.5, what was the energy lost by water

describe how you would prepare 465 mL of 0.3550 M potassium dichromate solution starting with solid potassium dichromate 

3) 2 MgO(s)  --> 2 Mg (s) + O2(g)                    Δ

Δ

H = +72.3 kJ

a.Endothermic or exothermic? _______________________

b.Heat is released or absorbed?_______________________

c.Temperature would go up or down? ________________

d.Rewrite the equation putting the heat in as a reactant or product.

Power Puff Girls like balloons. They bought a 2.15 L pink balloon at 1.75 atm. When they went outside, the volume changed to 1.32 L. What was the new pressure?

A chemist needs to neutralize 25.5 L of 3.86 M chloric acid (HClO3) What mass of sodium hydroxide is needed to accomplish this

Given 12 moles of water,how many grams of water are available?

Given 122 liters of butane gas,how many moles of butane are available for reaction?

hydrochloric acid     +   potassium hydroxide       à  potassium chloride  +  water