Write the symbol for the element with 10 neutrons with a mass number of A = 19.

In order to safely run a sample in a centrifuge, it is important to Select one: a. balance the sample with a counterweight of the same mass directly across from it. b. make sure the sample is free from impurities. c.

What are the differences and similarities of mechanical mixtures and solutions?

Aluminum bromide and potassium sulfate react to form potassium bromide and aluminum sulfate. a. Write and balance the reaction b. If you have 250.0 g of aluminum bromide and 200.0 g of potassium sulfate, which reagent is limiting? c.

As you may know, ethyl alcohol, C2H5OH, can be produced by the fermentation of grains, which contain glucose, C6H12O6 → + 2C2H5OH (l) + 2CO2 (g) a. How many grams of ethyl alcohol are produced from 1.00 kg of glucose? b.

Why do some fuels when burnt produce more heat than others?

How many grams of oxygen are formed when 8.20 moles of KOH are formed? 4 KO (s) + 2 H2O (l) → 4 KOH (s) + O2 (g)

It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution.

What are the advantages of using solar energy

Which of the following has the highest critical temperature? H2 N2 NH3 H2O