When a cup of hot chocolate cools from 90°C to 80°C, which

of the following is happening to the molecules of the liquid?

Which of the following explains why the substances cannot dissolve in water? Sugar, because it is an ionic substance Oil, because it is a nonpolar covalent substance Sugar, because it is a nonpolar covalent substance Oil, because it is an ionic

In the determination of the specific heat of a metal, why is it desirable to use the minimum volume of water that will allow immersion of the metal sample? 14

When 2.4 g zinc is added to hydrochloric acid, 450 ml of hydrogen gas form at a temperature of 32 C what is the pressure of the gas

Which best describes how sediment formswhat can create sediment

A gas mixture is made by combining 5.4 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 69.03 L. What is the molar mass of the unknown gas

How many different kinds of atoms occur naturally on earth? Why do you think so

Can a particle be a single atom? can a particle be a molecule?

Which is one way that in advance and biotechnology companies unintended consequence is that harm the environment? a. genetically modified plants require less water to grow b. patient using insulin pumps live longer than those without the pumps c.

A 27.3 g marble sliding to the right at 21.0 cm/s overtakes and collides with a 11.7 g marble moving in the same direction at 12.6 cm/s. After the collision, the 11.7 g marble moves to the right at 23.7 cm/s. Find the velocity of the 27.

Acids feel slick or soapy and usually have a bitter taste. True or False