A substance produced by some insects that was used to make records before world war II

How many electrons does Br lose or gain to fill its octet?

How many grams are equal to. 11 mole of copper (i) chromate, Cu2 (CrO4) a) 243 g b) 2.7 g c) 267.41 g d) 27

A laboratory procedure requires 4.67 g of a liquid whose density is 1.034 g/mL. What volume of liquid should be used for this procedure?

How to make slime with baking soda and no glue?

A motorcycle rider leans into the turns while going around the curves on a race track. Explain why the rider does this. A) The rider shifts their weight to keep their balance. B) The rider shifts their weight to create greater traction.

Gas y effuses half as fast as o2. what is the molar mass of gas y?

A sample of gas has a mass of 0.555g. volume is 117 mL at a temperature of 85 degrees Celsius and a pressure of 0.99 atm. What is the molar mass of the gas?

What is the molar mass of potassium

A chemist determined by measurements that 0.050 moles of aluminum participated in a chemical reaction. Calculate the mass of aluminum that participated in the chemical reaction. Be sure your answer has the correct number of significant digits.

In 1901, Thomas Edison invented the nickel-iron battery. The following reaction takes place in the battery. Fe (s) + 2 NiO (OH) (s) + 2 H2O (l) Fe (OH) 2 (s) + 2 Ni (OH) 2 (aq) How many mole of Fe (OH) 2, is produced when 5.35 mol Fe and 7.