Calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. If 0.5g of calcium carbonate is heated in this way.

a) What mass of calcium oxide is formed

b) The mass and volume of carbon dioxide formed at RTP

The mass number of a chromium atom is 52 and it has 24 protons. How many neutrons does this atom have

the total number of atoms in 3.20 moles of C2H6O.

Six students were asked to perform an experiment to see how the mass of a pendulum affected its period. They were given supplies and asked to design an experiment to test the impact that the mass of the bob had on period.

Write a balanced overall reaction from these unbalanced half-reactions. ln->ln3 + cd2+->cd

What type of chemical reaction is 4 Fe + 302 → 2Fe20; ? O single-displacement decomposition synthesis double-displacement

True or False: It is recommended to use sugar cubes to sweeten lemonade because they have a low surface area.

54,000,000 nanometers equals 0.000000054 megameters.

When cream mixes with coffee, is this a chemical or physical change?

A gas occupies 72.1 at stp. At what temperature would the gas occupy 85.9 L at a pressure of 93.6 kPa?

An 80 kg volleyball player lands from a jump and tries to stop her forward motion. The normal contact force exerted by the floor on her shoes is 2000 N. The friction force exerted by the floor on her shoes is 600 N acting backward on the player.