The activation energy of an endothermic reaction must be greater than the required ΔH.

True

False

Which of the following is the best way to separate sugar from water? a. decanting b. boiling c. filtering d. distilling

In a coffee-cup calorimeter experiment, 10.00 g of a soluble ionic compound was added to the calorimeter containing 75.0 g h2o initially at 23.2°c. the final temperature of the solution was 31.8°c.

explain why noble gases are often used in technologies. Why do the properties of the gases make them useful?

Would you expect a desert or a swamp to cool more rapidly at night explain

Which describes the two cells formed through mitosis?

What type of reaction is 2 NO2 - --> 2 O2 + N2

The main source of phosphorous is in: rocks water plants the atmosphe

To what part of a plant does the stem sliver water and nutrients

You place a balloon in a closed chamber at STP. When the balloon doubles in size, what happens to the chamber pressure? A.) The pressure stays the same B.) The pressure doubles C.) The pressure reduced by one half

2K3N + 3CaCrO4 → Ca3N2 + 3K, CrO Give the formula for the second reactant: How many potassium atoms on the reactant side: How many oxygen atoms on the product side?