In a chemical reaction you cannot create or destroy matter, this statement refers to

a.

conservation of atoms

c.

conservation of mass

b.

conservation of matter

d.

conservation of motion

in witch chamber does each state have the same number of votes, no matter how large or small its population?

An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain unchanged after 8.32 seconds. What is the half-life of fluorine-21? (1) 1.04 s (3) 4.16 s (2) 2.08 s (4) 8.32 s

While David was riding his bike around the circular cul-de-sac by his house he wondered if the constant circle motion was having any affect on his tires. what would be the best way for David to investigate this?

The structural level of a protein least affected by a disruption in hydrogen bonding is the a. primary level. d. quaternary level. b. secondary level. e. All structural levels are c. tertiary level equally affected.

How many moles of nitrogen monoxide will be generated when 0.83 moles of nitrogen dioxide gas reacts with water? 3NO2 + H2O 2HNO3 + NO 0.277 moles 0.415 moles 0.830 moles 1.000 moles 1.660 moles

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?

Which planets' orbits is the belt located between the main asteroid belt?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone