Which of the following compounds does NOT contain molecules?

a. H2

b. NaCl

c. CO2

d. H2O

Homogeneous mixtures have components A. That are usually large enough to be seen with the naked eye B. That are not distributed evenly throughout the mixture C.

What is the difference between the nuclear reactions taking place in the sun and the nuclear reactions taking place in a nuclear reactor?

What is the ion in acids that determines if they are safe to eat? I need an answer but I can't give anything because i don't know how

What units of measurement do scientists use?

Which statement about liquid and gases is correct?

How does a mixture of benzoic acid and benzaldehyde can be isolated separately by extractions?

What is a compound? a) a combination of two or more substances that are not chemically combined b) a combination of two or more elements that are combined in a certain ratio

A gas has a volume of 75mL at a pressure of 200.0 kPa. What will be the new volume be in mL if the pressure is decreased to 60.0 kPa in sig figs

Give two reasons why it's important to work with a partner in a lab

Suppose you have 3.00*1018 reams of lead (pb). how many lead atoms do you have? express the number of atoms numerically.