What's the physical state of hydrogen and zinc in 2HCl+Zn=ZnCl2+H2

An ideal gas is allowed to expand from 5.40 L to 35.1 L at constant temperature. By what factor does the volume increase? Will the pressure increase or decrease by that same factor? If the initial pressure was 143 atm, what is the final pressure?

The Symbol For Gold Is Taken From It's Latin Name "aurum" Which Is The Symbol For Gold? A. Go B. Au C. Al D. Gd

1. How much calcium oxide would be made by the thermal decomposition of 25 grams of calcium carbonate? CaCO3 - > CaO + CO2 2. How much oxygen gas can be produced through the decomposition of potassium chlorate (KClO3) if 194.

A molecule has two atoms that are bonded to the central atom and one lone pair of electrons around this central atom. What is the shape of the molecule? bent linear trigonal planar trigonal pyramidal

Thermal energy is the energy associated with

Greg classified some substances as shown in the table. Greg's Table Soluble in Water Insoluble in Water Dishwashing detergent Cloth Drink mix Plastic Sand Copper Why is Greg's table incorrect? Plastic is soluble in water. Copper is soluble in water.

What the magnetic force

What is the mass (in grams) of 9.42 * 1024 molecules of methanol (CH3OH) ?

If the volume of a solid is 100 cm3 and its mass is 400 g, what is its density?

In terms of electrons, what happens when sodium oxide is formed?