Is there a total of 20 bio chemical compounds true or false

Calculate the molar mass of the following compounds in g/mol. CH3CO2H

If a solution has virtually virtually no hydrogen ions, what type of pH does it have?

Which of the following describes the genotype and phenotype of parents whose child will definitely have a recessive trait? A. Both parents are homozygous for the recessive allele and have the trait. B.

What nuclear reaction takes place inside stars? A. Decay series B. Neutron bombardment C. None of these D. Nuclear fusion

Plate tectonics is the movement of lithospheric plates. These plates float on the and move because of mantle.

Which atom can accommodate an octet of electrons but doesn't necessarily have to?

Heat is an exchange of internal energy from one system to another due to A. a temperature difference between the systems. B. one system being gas and the other being solid. C. the systems having the same temperature. D.

Sierra did 500 J of work to move her couch. If she exerts 250 N of force on the couch, how far did she move it? (Work: W = Fd) 0.5 m 2 m 250 m 750 m'

Lead (ii) sulfide (pbs) has a ksp of 3.0 * 10-28. what is the concentration of lead (ii) ions in a saturated solution of pbs? 1.7 * 10-14m 1.5 * 10-14m 3.0 * 10-14m

A 2.17 gm sample barium reacted completely with water what is the equation for the reaction how many milliliters of dry H2 evoled at 21degree celcius and 748mm of Hg?