Which of the following is NOT a characteristic of insects? a. one pair of antennae b. five legs c. one or two pairs of wings d. none of the above

P. 2.5g of chlorine gas at STP to molecules?

1. In preparing Solution 3 for the kinetics rate runs, a student weighed our 0.2653 g of dye (molecular weight 879.9 g/mol. This was transferred to a 100 mL volumetric flask and water was add to make 100.00 mL of solution 1. A 10.

How many hydrogen atoms are in one molecule of c2h2?

Unbalanced forces can cause an object change its motion in three ways. What are they?

Lead crystallizes in a face-centered cubic structure with a density of 11.34 g/cm3. Polonium crystallizes in a simple cubic structure with a density of 9.3 g/cm3.

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

What is done with the reactive sodium after the reaction to make sure the products are safe in an air bag?

Which of the following does not indicate a chemical change? precipitate formation crushing a solid into a powder color change gas evolution

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?