Consider the nuclear equation below. Superscript 239 subscript 94 upper P u right arrow variable X plus superscript 4 subscript 2 upper H e. What is X?

Does mercury have more protons and electrons than tin?

What type of bond is formed between metal ions and nonmetal ions? a-metallic b-ionic c-covalent

If the mass of a material is 43 grams and the volume of the material is 9 cm^3, what would the density of the material be?

Pumice is a type of rock formed when gas bubbles are trapped inside of cooling lava. Pumice is most often formed when volcanoes erupt violently.

Type the correct answer in each box. (1.20 x 104) Ⓡ (2.152 x 102) = x 106 208 5.3

MgNH4PO4> Mg2P2O7+NH3+H2O

If 1.0 gram of matter was converted to energy, how much energy would be formed? A. 9.0 x 10-13 joules B. 9.0 x 1013 joules C. 3.0 x 1013 joules D. 3.0 x 108 joules

A piece of metal ore weighs 8.50 g. when a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 ml to 26.47 ml. what is the density of the ore?

Find the mass of 3.65 x 10^-2 mol K2SO4

What two factors determine the thermal energy in a substance