Which is the best time to apply sunscreen?

Before going to bed

Just after going out in the sun

1 hour after going out in the sun

30 minutes before going out in the day

What subatomic particles do the following symbols represent in the atomic diagrams

Why is glass a good substance for storing chemicals

Predator-prey relationships are shown through food trees. food chains. food webs. food networks.

Since the hybridization of the central atom is usually the only factor needed to determine molecular shape, you can simplify by considering only the hybridization of the central atom.

After balancing the equation, what would be the coefficient for water? __NH3+__O2=__NO+H2O

In the fourth century bc Greek scholars rejected Democritus ideas about the atom. This rejection was mostly based on?

An element X has two isotopes. X-15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus. a. atomic number = 8; mass number = 9 b. atomic number = 8; mass number = 17 c.

Which statement best describes the direction of heat flow by conduction between two samples of the same material? 1. Heat flows from faster molecules to slower molecules when they are near. 2.

Delta H equals 98.8 KJ, and Delta S equals 141.5 J/K. Is this reaction spontaneous or nonspontaneous at high and low pressure

Secondary consumers are eaten by?