How has the growing human population changed the rate at which resources are used?

If an atom has 32 protons and 38 neutrons, what is it's mass number?

You have two samples of the same gas in the same size container, with the same pressure. The gas in the first container has a Kelvin temperature four times that of the gas in the other container.

A student writes the following explanation of how certain molecules are formed. A process is used to chemically link smaller units to form a larger molecule that is made up of repeating units.

What is molecule? and what is the molecular formulae?

Which of the following statements correctly describes boyle's law

What is copper (ii) reacts with iodine products balanced equation

Instructions:Select the correct answer. Refer to the activity series chart and determine which of the following displacement reactions can occur.

Calculate how many grams of o2 (g) can be produced from heating 87.4 grams of kclo3 (s).

Which of the following statements about the nucleus is false? A. Able to be lost or gained in chemical reactions. B. Contains nearly all of the mass of the atom. C. Made up of protons an neutrons. D. None of these

All Organisms the energy to function. Which cell organelle provides this energy? A. Nucleus B. Ribosomes C. Chloroplast D. Vesicle