Based on Reference Table H, which sample has the highest vapor pressure?

a. water at 20ºC

b. water at 80ºC

c. ethanol at 50ºC

d. ethanol at 65ºC

Which best defines a pioneer species? a species that enters an area and makes its own food a species that enters a community that is stable and balanced the first species to populate an uninhabited area the first species that eats other organisms in

500 mL of He at 98 kPa expands to 750 mL. Find P2.

Galvanized nails are iron nails that have been plated with zinc to prevent rusting. the relevant reaction is zn2 (aq 2e? zn (s for a large batch of nails, a manufacturer needs to plate a total zinc mass of 3.

What is organic chemistry?

Which outer planet has a characteristic storm called the Great Red Spot?

Can you think of other possible ways scientists can determine what climate was like in the past besides studying ice cores?

Which sub-layer thins out into space, where there is no air

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead (ii) acetate, pb (c2h3o2) 2.

A magnesium atom has 2 valence electrons in its third shell. Which is a TRUE statement about what happens when it forms an ion? A. It will be an anion. B. It will have more electrons than protons. C.

What scientific discoveries led to changes in Dalton's atomic theory?