Answer:
Its 19.
Explanation:
K (potassium) has 19 electron according to the atomic number in the periodic table. The atomic number tells you the number of protons and electrons.
<span>-NH2 or, in its ionized form, -NH3+. Amino groups are the functional groups that bestow the "amino" in amino acid. They also readily ionize, gaining a proton (hydrogen ion), and thus serve as weak bases.</span>
Answer:
The concentration of the chemist's silver(I) nitrate solution is 0.897 mmol/L
Explanation:
<u>Step 1: </u>Data given
Number of moles AgNO3 = 269 micromol = 269 * 10^-6 mol
Volume of AgNO3 = 300 mL = 0.3 L
Molar mass of AgNO3 = 169.87 g/mol
<u>Step 2: </u>Calculate molarity of AgNO3
Molarity = number of moles per volume (in Liters)
Molarity AgNO3 = 269 *10^-6 mol / 0.3 L
Molarity AgNO3 = 8.97 * 10^-4 M
8.97 *10^-4 mol/L = 897 micromol/L = 0.897 mmol/L
The concentration of the chemist's silver(I) nitrate solution is 0.897 mmol/L
Loud noise is particularly harmful to the inner ear (cochlea)
