How many Valance electrons are in an atom of phosphorous

For each of the following formulas, write the name of each element and the number of atoms of that element that are in the formula. (a) 2K³PO⁴ (b) 3Al (OH) ³ (c) 5Fe² (SO⁴) ³

If the specific heat of iron is 0.449 J/g·K, what is the enthalpy change of this process for 100 g of Fe (s) ? Is the process endothermic or exothermic? Explain.

What is true about blood alcohol concentration?

Which of the following descriptions explains the process of water freezing?

An instrument that allows you to look closely at objects that are invisible to the human eye, including cells

When the Sun is in its maximum solar cycle, which of the following occurs? A. One CME is produced every five days B. There is an unpredictable amount of energy C. Up to three CMEs are created in one day D. Protons and neutrons accelerate

How many daughter cells are produced in meiosis?

Sodium chlorite - > sodium chloride + oxygen what type of chemical reaction is represented by this equation

The mixing of which pair of reactants will result in a precipitation reaction? the mixing of which pair of reactants will result in a precipitation reaction?

A balloon has 18.9 moles of hydrogen gas at a volume of 428 L. What would the volume of the gas be if the balloon had 14.0 moles of hydrogen gas left after 1 day?