Which of these substances are molecules?

1. H2O

2. NaCl

3. N2

4. O2

Question 12 options:

3 and 4

All of them

1 and 2

None of them

The reaction 2Fe + 3Cl2 → 2FeCl3 is an example of which type of reaction? combustion reaction single-replacement reaction combination reaction decomposition reaction

What is the mass of strontiums isotopes

Is transition metals low density or high

How can you tell the difference between colloid and a solution?

What is a characteristic of a solution

Gases are unique because it is the only phase that can be compressed can flow is composed of moving particles cannot be compressed

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present

Assuming constant pressure and temperature, how many moles of gas have been added to the initial 3 moles of gas when the volume increases from 2.0 to 4.0 liters? a. 1.5 moles b. 2 moles c. 3 moles d. 6 moles

The chemical symbol for sodium is A. N. B. S. C. Na. D. Sn.

What is the pressure of a mixture of co2, so2, and h2o gasses, if each gas has a partial pressure of 25 kpa?