What is evidence of a physical change. A. ice melts B. silver tarnishes C. biycicle rusts

What is 673.5 in scientific notation

Which of the following best accounts for the difference in mutagenic activity between PAHs and PAHs plus liver preparation? a.

If you measured the ph of stomach acid and of bleach, a. both would be above 7. b. the ph of stomach acid would be below 7, but the ph of bleach would be above 7. c. the ph of stomach acid would be above 7, but the ph of bleach would be below 7. d.

How many molecules of water can be made from 200 molecules of hydrogen and 200 molecules of oxygen

A chemist must dilute of aqueous iron (II) bromide solution until the concentration falls to. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters.

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?