How many moles are present in 10.5 grams of nacl?

Answer : The number of moles present in 10.5 grams of NaCl are, 0.179 moles.

Solution : Given,

Mass of NaCl = 10.5 g

Molar mass NaCl = 58.5 g/mole

Formula used :

Now put all the given values in this formula, we get the moles of NaCl

Therefore, the number of moles present in 10.5 grams of NaCl are, 0.179 moles.

im not exactly sure but i think its b!

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.