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

3.0 * 10-4

3.0 * 102

3.3 * 10-3

1.1 * 1044

Which force acts an an object to move it from rest or a constant, straight-line motion? A-balanced B-unbalanced C-inertial D-along a straight line

How crust is made of? and How rocks and minerals are related?

Ice I left out on the counter A. Sublimation B. Condensation C. Evaporation D. Deposition E. Melting F Frezzing

A carbohydrate with 5 carbons is called a: A. hexose B. pentose C. tetrose D. triose

While in Europe, if you drive 123 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 24.0 mi/gal? Assume that 1euro=1.26dollars. Express your answer numerically in dollars.

A bicyclist pedaling up a Hill. What type of energy potential or kinetic?

What improvements have been made in modern farming? Select all that apply. 1. machines can do more work over less time 2. better seeds sprout and grow much more quickly 3. trains can transport food over long distances faster 4.

A piece of solid Zn metal is put into an aqueous solution of SnSO4. Write the net ionic equation for any single-replacement redox reaction that may be predicted.

The interactions that are important in the secondary structure of a protein are: a) disulfide bonds. b) peptide bonds. c) hydrogen bonds. d) hydrophobic interactions. e) salt bridges.

Teflon is prepared by the polymerization of tetrafluoroethylene. Write the equation that describes the polymerization using Lewis symbols.