Which two chemicals are products in the following chemical reaction? PbO2 + 4HCI — PbCl2 + Cl2 + 2H20
A. PbCl2
B. HCI
C. Cl2
D. PbO2

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false