Which of the following is not a compound?

a. water

b. sugar salt

c. chocolate

d. chip cookies

What can you do to avoid overexposure to sun's rays?

Why is acetyl chloride hydrolyzed faster than benzoyl chloride?

The relationship between pressure and temperature of a gas, when volume and moles of a gas are held constant, is: P*T = k. TRUE FALSE

How does pollution affect marine life? a. pollution causes a decrease in phytoplankton populations and therefore a decrease in the occurrence of algal blooms. b.

Does a dilute solution contains a small amount of solute relative to the solute's solubility? True or false?

Which atom has the weakest attraction for electrons in a chemical bond? (1) a boron atom (3) a fluorine atom (2) a calcium atom (4) a nitrogen atom

Why is an alkali metal like Sodium so reactive?

Hemoglobin, a protein in red blood cells, carries o2 from the lungs to the body's cells. iron (as ferrous ion, fe2+) makes up 0.33 mass % of hemoglobin. if the molar mass of hemoglobin is 6.8 Ã 104 g/mol, how many fe2 + ions are in one molecule?

Describe step by step how we can make a field of a variable quantity?

When NEM is added to a purified solution of creatine kinase, Cys 278 is alkylated, but no other Cys residues in the protein are modified. What can you infer about the Cys 278 residue based on this observation