Please assist in the following question: Sucrose (table sugar) has a molar mass of 342.30 g/mole. How many sucrose molecules are in a 6.50-pound bag of sugar? (1 pound = 453.6 grams.)
sucrose molecules:
Answer should be in molecules

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

What type of matter is made of only one kind of atom

Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?