Which of these elements has two valence electrons? hydrogen (H) barium (Ba) nitrogen (N) krypton (Kr) bromine (Br)

A reaction container holds 5.77 g of P4 and 5.77 g of O2. The following reaction occurs: P4 + O2 → P4O6. If enough oxygen is available then the P4O6 reacts further: P4O6 + O2 → P4O10. a. What is the limiting reagent for the formation of P4O10? b.

A gas with volume of 700.0 mL at STP (0.0 0C, 1.00 atm) is compressed to a volume of 200.0 mL and the temperature is increased to 30.0 0C. What is the new pressure in kPa?

Which of the following would be a good situation in which to apply Hess's law? A. when the reaction is exothermic B. when the products are unknown C. when a reaction is spontaneous D. when the Hreaction is not known

What type of charge does a neutron have

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes no correct Anwser get brainliest

Which of these is the Bronsted-Lowry acid in this equation? CH3 - + H2O - - > CH4 + OH-

Melting is a physical change in matter, so it doesn't change the chemical makeup or chemical properties of matter. A: True B: False

If you bleach something red what color will it turn

Which body system does rheumatiod effect

Why does the glass of water weigh less after the pill has dissolved? Why does the glass of water weigh less after the pill has dissolved? Nitrogen dioxide gas will be generated and released as the anti-acid pill dissolves.