Which chemical equation is balanced?

2PCl5 + 2H2O → 2HCl + H3PO4

PCl5 + H2O → HCl + H3PO4

PCl5 + 3H2O → 5HCl + H3PO4

PCl5 + 4H2O → 5HCl + H3PO4

The small particles that make up sedimentary rock are called

A person is told to take 1.25mg of vitamin D daily. How many 0.500-mg tablets should this person take?

This element is named after the upper penisula?

Why is it necessary to mix the solution very rapidly when the bleach is added?

When combined with alcohol some over the counter drugs can:

What's is the percent composition by mass of oxygen in magnesium oxide, Mg0

Which consequence of new fishing methods had the most immediate impact on the environment? A. Diesel engines on newer ships contributed to global warming B. Increased reliance on fish in the American diet led to health problems C.

Which statement best describes the basis of the band theory of metallic bonding? a. Molecular orbitals overlap to form atomic orbitals in which the valence electrons of the atoms travel. b.

Which of the following is always valid? Choose only ONE answer. 1. W = - P ∫ dV, for the calculation of work in a mechanically-reversible piston-cylinder arrangement 2. For any fluid undergoing a change in pressure, Cp = dH/dT. 3. ΔH = ΔU + Δ (PV) 4.

Are kilograms heavy?