Which of the following is one way to prevent the corrosion of iron?

A. Add carbon to the iron. B. Paint exposed iron parts with protective paint. C. Let the iron develop a natural coat of carbonate. D. Protect the iron from polluted air

How many milliliters of 0.20 molar koh solution are needed to exactly neutralize 20. milliliters of 0.50 molar hcl?

The approximately 20 basic building blocks of protein are called A. amino acids. B. lipids. C. lipoproteins. D. triglycerides.

Which of the following would most practically be studied by use of a model? The global movement of ocean water. The veins of a leaf. The parts that make up a can opener. The inside of a light bulb.

How many moles of silver atoms are in 1.8 x 1020 atoms of silver?

Boron found in nature has an atomic weight of 10.811 and is made up of the isotopes 10B (mass 10.013 amu) and 11B (mass 11.0093 amu). What percentage of naturally occurring boron is made up of 10B and 11B respectively? a. 30:70 b. 25:75 c. 20:80 d.

What are real world examples of chemical changes?

Addition of a catalyst can speed up a reaction by providing an alternate reaction pathway that has a

Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3 (po4) 2

What is a physical property of water? A) liquid at room temperature B) not flammable C) pH of 7 D) reacts with sodium

If 0.360 J of heat is added to 0.7402 g of water, how much will the temperature increase?