D.because the water is needed to wet the sand and keep the reaction safe
Answer:
The answer to your question is 19.5 moles
Explanation:
Data
moles = ?
Volume = 6.5 l
Molarity = 3 M
Molarity is a unit of concentration that relates the number of moles by the volume (liters).
Formula
Molarity = moles / Volume
-Solve for moles
moles = Molarity x Volume
-Substitution
moles = 3 x 6.5
-Result
moles = 19.5
Answer:
for question a element A and B are isobars
for question b element C and D have the same atomic numbers.
Explanation:
- element A and B are isobars because they have the same mass numbers but different atomic numbers. The different atomic numbers is as a result of the difference in proton number of each elements A and B. (A and B are two different elements).
- element C and D are isotopes of the same element because they have the same atomic numbers (same number of protons) but differ in number of neutrons resulting in the different number of mass numbers. (C and D are the same elements)
