Answer: 4.22 grams of solute is there in 278 ml of 0.038 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
where,
n = moles of solute
= volume of solution in L
Now put all the given values in the formula of molality, we get
mass of =
Thus 4.22 grams of solute is there in 278 ml of 0.038 M
1. synthesis
<em>because</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>only </em><em>option</em><em> </em><em>which</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>form</em><em> </em><em>of</em><em> </em><em>manufa</em><em>cturing</em><em> </em><em>complex</em><em> </em><em>materials</em>
Stock bottle weight to weight percentage is 37 %. This means that 1000 g of solution would contain 370 g of HCl.
therefore number of moles of HCl in 1000g - 370 g / 36.5 g/mol = 10.1 mol
the density of solution is 1.19 g/ml
volume of 1 mL weighs - 1.19 g
then 10 mL would weigh - 11.9 g
so if 1000 g contains - 10.1 mol
then 11.9 g contains - 10.1 mol / 1000 g x 11.9 g = 0.120 mol
therefore number of HCl moles in 10 mL is 0.120 mol
It was most likely heat energy due to the warmth of the sun melting the snow away.