Is there any correlation between hardness and density of minerals?

Match Match the action to the effect on the equilibrium position for the reaction N2 (g) + 3H2 (g) ⇌ 2NH3 (g). Match Term Definition Removing ammonia A) Shift to the left Removing hydrogen gas B) No effect Adding a catalyst C) Shift to the right

Why does nitrogen have 5 valence electrons?

What is difference between ionic and covalent bond.

What is the value of work done on an object when a50-newton force moves it 15 meters in the same directionas the force?

Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than iron.

If an amino acid contained a hydrocarbon (a group of multiple carbons and hydrogens linked together) as its side group, in which of the following categories could it be appropriately designated? A) hydrophilicB) polar C) nonpolarD) basicE) acidic

Which atom can bond with each other to form chains, rings or networks? (1) carbon atoms (2) hydrogen atoms (3) oxygen atoms (4) nitrogen atoms

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

The ksp of copper (ii) carbonate, cuco3, is 1.4 * 10-10. calculate the solubility of this compound in g/l.

A 1.0857 gram pure sample of a compound containing only carbon, hydrogen, and oxygen was burned in excess oxygen gas. 2.190 g of carbon dioxide and 0.930g of water were produced. Find the empirical formula of the compound.