Which of the following is not a base?

A: NH3

B. NaOH

C. H3C6H5O7

D. KOH

Which statements about a sample of gas containing molecules of different masses are true? Check all that apply. A. The rms speed depends only on temperature, and so all types of particles in the sample have the same rms speed. B.

What can the density of a substance tell you about its particles

Which of the following is typical of an endothermic reaction? The reaction container is warm. The reaction container is cold. Light is a product of the reaction. Sound is a product of the reaction.

The pitch of the siren of a moving fire truck changes from high to low as the fire truck passesby. What property of sound wave changes as the fire truck goes by?

One kilometer (km) equals 1000 meters (m). How many meters are equal to 0.044 km?

Betty baked a batch of blueberry muffins, Baking is an example of a chemical change a physical change an elemental change a periodic change

Some covalent compounds contain atoms of just one element. true or false?

You wish to calculate the mass of hydrogen gas that can be prepared from 4.93 g of srh2 and 4.14 g of h2o.

Are needed to digest food in the stomach

What is the volume of 2.1 moles of chlorine gas at STP?