A piece of magnesium ribbon reacts with hydrochloric acid to produce magnesium chloride. what is the empirical formula of the compound, that is 25.3% magnesium and 74.7% chlorine.

Which particle is the smallest?

List four elements used in dfds, draw the symbols, and explain how they are used.

If 6 moles of a compound produce 84 J of energy, what is the AHreaction in J/mol?

When aqueous solutions of K3PO4 and Ba (NO3) 2 are combined, Ba3 (PO4) 2 precipitates. Calculate the mass, in grams, of the Ba3 (PO4) 2 produced when 1.2 mL of 0.152 M Ba (NO3) 2 and 4.2 mL of 0.604 M K3PO4 are mixed.

A plastic bag has a volume of 22.3 liters at a pressure of 100.0 kPa. If the pressure of the balloon is decreased at 83.5kPa, what will be the new volume of the balloon?

4 HCI + O2 - > 2 H2O + 2 CH2 How many moles of H2O can be produced from 30. moles of HCI?

How many molecules of nitrogen gas are in 22.4 L? A. 6.022 * 10^22 B. 6.022 * 10^23 C. 6.022 * 10^24 D. 6.022 * 10^25

What is the pH of a 0.0025M HCI solution?

Moles of Zn (NO3) 2 in 131.50g of this substance.

Each degree on the Kelvin scale equals: 1°C 10°C no relationship (different scale) 100°C