Which atoms have the same number of neutrons?

1) H-1 and He-3

2) H-2 and He-3

3) H-3 and He-3

4) H-3 and He-4

How many formula units make up 24.2g of magnesium chloride (MgCl2) ?

Oxygen and hydrogen are most likely to form what type of bond?

Why do submarines have to be built with such strong, thick walls, compared to ships? Explain in as much detail as you can using ideas about water pressure.

Consider the elements of group 4a (the "carbon family") : c, si, ge, sn, and pb. what is the trend in metallic character as one goes down this group?

During electrolysis, where do oxidation reactions occur? in the anode of an electrolytic cell in the cathode of an electrolytic cell in the power source of an electrolytic cell in the salt bridge of an electrolytic cell

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells

Coefficients in a chemical equation are used to: balance the number of atoms on both sides of the equation ensure that all subscripts on both sides of the equation are the same indicate energy changes that occur during the reaction indicate the type

What determines your blood cholesterol level?