Which of the following compounds has exactly two atoms of hydrogen?

HCl

CH4

HNO3

H2O2

A color change happens during an experiment mixing two liquids. Is this a physical change or chemical change? a. A color change always indicates a chemical change. b. Color is a physical property, so it is only a physical change. c.

Synfuels are made from energy sources that are more plentiful than

This a domain of prokaryotic cells possessing diacyl glycerol diester lipids in their membranes, bacterial RNA, no nuclear membrane,

Which meal would provide the most energy as well as the material needed to build muscle?

For acidic solutions, which element is added to balance half-reactions? A. hydrogen B. hydroxide C. oxygen D. nitrogen

What is in a banana? give me specifics?!

When 17.28 mL of a 0.078 M aqueous solution of Na2SO4 is combined with 11.30 mL of a 0.20 M aqueous solution of NaCl and 7.84 mL of a 0.26 M aqueous solution of KCl, what is the total concentration of Na + in the combined solution?

What mass of carbon can 3000 J of energy raise from 12°C to 40°C?

How do you balance __Mg + __HCl - - > __MgCl2 + ___ H2

How many grams of methane, CH4 are produced from the complete reaction of 5.15 moles of carbon monoxide, CO