1. How many moles of oxygen gas are required to react with 15.56 moles of hydrogen gas? (2 pts.)

2H2 (g) + O2 (g) → 2H2O (g)

For POCl3 (l), find the value of ΔH∘f

What takes place in the reactor vessel?

A force can exist between two charged particles or objects even if they're as small as subatomic particles. between which of these would a repulsive force exist? a. proton-proton b. electron-electron c. neutron-neutron d. a and b

Why do some chemical symbols for elements consist of 2 letters and others of only one

Do you guys just sit and answer questions for fun or is it your job because that just sounds lame as shiit. I would like to know how far jupiter is away from planet 12sypO. what is your snap also.

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves