The speed of light is used to determine the length of a light-year. About how far does light travel in one second? A. 30 km B. 3,000 km C. 30,000 km D. 300,000 km

Caffeine's molecular formula is c8h10n4o2. the molar mass of caffeine is 194g/mol. what is the percentage of carbon in caffeine

Definition of metallurgy

How does a carbon atom's ability to form bonds with other carbon atoms allow it to form large molecules

If 26.25 ml of 0.1850 m naoh solution reacts with 25.00 ml of h2so4, what is the molarity of the acid solution?

Which substance below has the greatest mass? 1 mole of silver 1 mole of copper 1 mole of lead 1 mol of tungsten

For what reasons can a theory be changed

Explain how changes in pressure affect the rate and yield of ammonia produced

What volume of 20 mg/L dye would be required to make 50. mL of. 10 mg/L dye?

A weather balloon at Earth's surface has a volume of 3.9 L at 299 K and 763 mmHg. If the balloon is released and the volume reaches 4.13 L at 720 mmHg, what is the temperature? Answer in units of K.

Molecules that resemble fats but contain phosphate functional groups are called: a. steroids. b. polypeptides. c. phospholipids. d. nucleic acid.