Match the correct president to the event:
1. ford
roe vs. wade
2. carter
end to the cold war
3. reagan
the defense of marriage act
known as the "great
4. george h. w. bush
u
5. clinton
communicator"
passage of a 780-billion dollar
stimulus package
inflation skyrocketed
attacks of 9/11
6. george w. bush
7. obama
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6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol