Blog

Determine the signs of heat and work based on the following scenarios: The reaction is exothermic q=[q] The volume increases w=[w]. 

What is the coefficient of carbon dioxide when the following equation is balanced to the lowest whole number ratio? 

Determine if the following reactions are exothermic or endothermic.

Choose the strong acids from the following (there may be more than one). 

A lab has a stock solution of 7.50 M hydrochloric acid. A scientist needs 0.750 L of 0.354 M hydrochloric acid, how many milliliters of the stock solution does the scientist need to use? 

For the following hypothetical reaction how much heat is released in kilojoules (kJ) if 210.0 g of propanol (C3H7OH ) is added to excess oxygen?   

If 21.2 g of chlorine gas reacts with 24.5 g of sodium iodide what is the limiting reagent and how much sodium chloride can be produce?

Which of the following pHs is the most basic?

If 42.0 mL of 0.631 M lead (II) nitrate, (Pb(NO3)2), is reacted with excess potassium chloride, (KCl), how many grams of lead (II) chloride (PbCl2) will be produced? 

Sodium is a very reactive metal that reacts with water to produce sodium hydroxide and hydrogen gas. If 12.6 g of sodium reacts with excess water how much hydrogen gas (in grams) can be produced?