Which of the following Substances would have the highest vapor pressure at 298 K?

A) propanol (b. p. = 97 °C)

B) acetone (b. p.=56°C)

C) benzene (b. p. = 80°C)

D) chloroform (b. p. = 61°C)

A meteorologist has very specialized expertise in which of the following activities?

N2 (g) + 3H2 (g) + 2NH3 (9) What will happen if pressure is increased?

This is all the water; the liquid portion of the planet.

The difference between a hypothesis and a theory is that a hypothesis is a. never true whereas a theory is always true. b. true whereas a theory is not true. c. an isolated fact whereas a theory is a huge collections of facts. d.

What is the oxidation number of the element ge in the compound geo2?

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100 pennies?