What is the molecular shape of HCN?

bent

linear

angular

trigonal pyramidal

3. A 0.821-mol sample of a substance composed of diatomic molecules (of the same atom) has a mass of 131.3 g. Identify this molecule.

If there are two beakers of water 1 containing 500ml and the other 100ml both at 20 degrees Celsius which has more thermal energy and why?

How much is 6.10^23 in grams?

Earth's surface area is 5.10 * 108 km2, and its crust has a mean thickness of 35 km and mean density of 2.8 g/cm3. The two most abundant elements in the crust are oxygen (4.55 * 105 g/t) and silicon (2.

Why is eutrophication harmful to fresh water?

How is the kinetic energy of the particles of a substance affected during a phase change?

Which sample is a pure substance? a test tube of zinc oxide a container of zinc and oxygen a flask of pond water a jar of soil

What is an octet of electrons and which elements contain an octet of electrons?

What is the mass of the helium nucleus?

What is a ion? A. An atom with a different number of neutrons B. An atom with a positive or negative charge C. A molecule whose name has no charge D. A molecule that does not have any bonds