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Calculate the molar mass of SiO2, show your work by entering the atomic mass in the proper boxes.

Molar mass of SiO2 = ... ?

g/mol Si + 2 * ... ?

g/mol O = ... ?

g/mol SiO2 (total)

The chemical equation for a reaction between KMnO4 and HCl is shown. 2KMnO4 + 16HCl → 2MnCl2 + 5Cl2 + 2KCl + 8H2O Which of the following identifies the reactant that acts as a reducing agent in the reaction and explains the answer?

What is the difference between polyatomic an diatomic?

Considering the nonmetals what is the relationship between the group number for an element (carbon, for example, belongs to group 4a;

Hi guys, my question is: Bromoethane is converted to methanol in an alkaline solution. This reaction is first order with respect to each reactant.

Leon uses a pressure gauge to measure the air pressure in one of his car tires. The gauge shows that the pressure is 220 kilopascals. The temperature is 297 K, and the outdoor air is at standard pressure. If the tire contains 4.

A 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g of water and 50.0 g of ice, both at 08C. The reaction is 2Na (s) 1 2H2O (l) 88n 2NaOH (aq) 1 H2 (g) DH 5 2368 kJ

How many moles of N are in 0.203 g of N2O?

An atom has a charge of +1 in its nucleus. Which statement must be true in order for this atom to have no net charge? A. The one positive proton has no influence on the overall charge of the atom. B.

A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of the reaction is given below. What is the concentration of NaOH that is used?

How to find the number of neutrons in an atom