Answer:
<u>390g</u>
Explanation:
it's moles actually...
Molar mas of CaF2 is =78g/mol
It means 78g per mole...Si If you have 5 moles..that means you have...
78*5g of CaF2...
Answer:
False
Explanation:
Molecules of the same substance are made up of the same type of atoms and look exactly alike.
Hence, if I have two molecules of methane having exactly the same atoms of carbon and hydrogen,the both are indistinguishable from each other based on appearance.
Hence all molecules of methane are exactly alike if they are composed of atoms of the same isotope of hydrogen and carbon.
Answer:
HA and A-
Explanation:
before the equivalence point, there is a HA/A- buffer solution by wich the pH is calculated.
Therefore, the species that decrease their concentration before the equivalence point are HA and A-
Answer:
the third one because oceans don't affect the weather
Explanation: