Boron has an atomic mass of 11. How many neutrons are in its nucleus? Use the periodic table if you wish.

In which type of chemical bonding are electrons shared among all atoms in the substance?

The concentration of a chemical degrades in water according to first-order kinetics. The degradation constant is 0.2 day-1. If the initial concentration is 100.0 mg · L-1, how many days are required for the con - centration to reach 0.14 mg · L-1?

The ___ of an organism is its evolutionary history

What is the difference between the core promoter and promoter-proximal regulatory elements? see section 19.3 (page 385) ?

What does the subscript 2 indicate in the compound mgcl2?

The equation for the production of methane is c + 2h2 (g) → ch4 (g). how many liters of hydrogen are needed to produce 20. l of methane?

How was the charge distributed in the plum pudding model of the atom

What happens when an acid neutralizes a base

How many mL of 50% (v/v) alcohol should be mixed with 10% alcohol to obtain 50mL of 35% (v/v) alcohol? Round to the hundredths place.

What is an example of a precipitation reaction and addition reaction?