Perfume evaporating, because the top is left off the bottle, is an example of a chemical change. True False

Glucose and oxygen are the products of cellular respiration. digestion. fermentation. photosynthesis

What is more electronegative? O or Br

Which measurement describes the pressure of a gas? 725 mmHg 1.2 g/L 2.5 L 315 K

Consider the reaction. N2 (g) + 3H2 (g) 2NH3 (g) At equilibrium, the concentrations of the different species are as follows. [NH3] = 0.105 M [N2] = 1.1 M [H2] = 1.50 M What is the equilibrium constant for the reaction at this temperature? a. 0.

The following reaction was carried out in a 3.75 L reaction vessel at 1100 K: C (s) + H2O (g) ⇌CO (g) + H2 (g) If during the course of the reaction, the vessel is found to contain 6.50 mol of C, 15.9 mol of H2O, 3.20 mol of CO, and 8.

Which of the following statements is true of enzymes? A. they change shape after a reaction B. They don't provide an active site for substrates to bind in a reaction C. They're unusable after a reaction D.

How many moles of NaCl are present in 530 ml of a 1.52m NaCl solution

How much can 97 go in to 15

What is the predicted products for Ag+CuSO4

What happens to the carbon atoms lost during respiration?