Based on your experience, which reactions are likely to be self-sustaining? Check all that apply.

COM

burning gasoline in

a car engine

hard-boiling an egg

thrusting a rocket

into space

Some molecules that are covalently bonded do not have a difference in charge across the molecule. These molecules are referred to as nonpolar. What arrangement of electrons would result in a nonpolar molecule?

Which structures are haploid? select all that apply. which structures are haploid? select all that apply. gametophyte spores zygote egg sporophyte?

Determine the number of protons neutrons and electrons in an isotope that has 21 neutrons and a mass number of 40

Given 50g of sodium how many moles do you have?

What rule is used to estimate your total stopping distance under ideal conditions? a. 4 second rule b. 2 second following distance rule c. 12 second visual lead rule d. 3 second travel rule

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molarity of the resulting solution?

Which one of the following Acids is most likely to hurt you? Acid A: 1.0 M; Acid B: 0.0001M

Which statement accurately describes the atoms of a specific element? explain your answer in complete sentences. A. A Neon, Ne, atom contains 10 electrons outside the nucleus and 11 neutrons inside the nucleus. OR B.