An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

20

The answer is 25

Which substance is most likely to be miscible with water? (hint: determine which molecule is polar) ?

Find the density of metal with a volume 4.0 cm and a mass of 8.0 grams.

You are given 60 ml of 2.0 m naoh solution. how many ml of 6.0 m hcl solution is needed to completely neutralize the naoh solution? s

What element occurs in many natural gas wells; nucleus is a alpha particle?

Where are the noble gases on the periodic table and what characteristics do they have?

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?

Calculate the percentage by mass of nitrogen in ptcl2 (nh3) 2.

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. what combination of these fatty acids could you use to make a fat that is liquid at room temperature?

According to the quantum-mechanical model of the atom established by shrödinger, where may the electrons of an atom be found?

Renewable resources cannot be replaced in our lifetime