How many moles of hydrogen are priduced frim the reaction of three moles of zinc with an excess of HCl?

Zn+2HCl-ZnCl2+H2

S shown on the periodic table, the greatest number of elements are which

While heating two different samples of water at sea level, one boils at 102°c and one boils at 99.2°c. calculate the percent error for each sample from the theoretical 100.0°c?

Given the balanced equation: 3fe3 + (aq) + al (s) → 3fe2 + (aq) + al3 + (aq) what is the total number of moles of electrons lost by 2 moles of al (s) ?

Assuming the density of a 5%acetic acid solution is 1.0g/mL, determine the volume of the aceticacid solution necessary to neutralize 25.0mL of 0.10M NaOH.

This is how platinum appears in the periodic table. A purple box has P t at the center and 78 above. Below it says platinum and below that 195.08. Rounded to the nearest whole number, what is the atomic mass of platinum? 78 117 195 273

Wat is a redox reaction

What is the difference between an organic and inorganic molecule

The variable that you plan to change during the course of an experiment is?

It is often necessary to prepare a dilute solution from a more concentrated solution rather than starting from a solid and just dissolving it then adding water. This technique is called serial dilution.

Zinc metal reacts With hydrochloric