How many electrons does a single hydrogen gain or lose in the following reaction? H 2 + O 2 → H 2 O

A. Gain 2

B. Lose 1

C. Gain 1

D. No change

Matter does not exist in which scenario? parts of outer space where there is no air or atoms salt dissolved in water air in the lower levels of the Earth's atmosphere leather made from cow hides

When substances change into new substances, the process must involve: a physical change a chemical change heat being produced heat being absorbed

You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 29 quibs of a substance called skvarnick.

A certain metal hydroxide, m (oh) 2, contains 32.8% oxygen by mass. what is the identity of the metal m?

Write the balanced equation for the neutralization reaction between h 2 so 4 and koh in aqueous solution. Phases are optional.

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps

In which group do all atoms have seven valence electrons in the ground state?