D = mass / volume
d = 100 g / 100 mL
d = 1.0 g/mL
Answer:
according to my reading
use own words
Explanation:
Salts are combinations of acids and bases. The cation comes from a base and the anion from an acid. Therefore, to make KNO3 we react KOH and HNO3. See how that is done? We write K and add OH to make KOH. We take NO3 and add H to make HNO3.
The answer is B, the heart is the center of the cardiovascular system as one of its main tasks is to distribute blood throughout the body.
Answer: With atomic number 20, calcium atoms have 20 positive protons, and the ion has only 18 electrons, which means the net charge is +2. Calcium ions are essential for muscle contractions, nerve impulses, and bone maintenance.
:
Three groups
gases, metals, metalliods/nonmetals
