Explanation:
Phases of Matter
Question Answer
Vaporization that occurs at and below the surface of a liquid boiling
A solid that is made up of crystals in which particles are arranged in a regular, repeating pattern crystalline solid
A solid made up of particles that are not arranged in a regular pattern amorphous solid
Answer:
27.3% of Carbon (C), 72.7% of Oxygen (O).
.4 M means that in 1 Liter of solution there are .4 moles.
Molarity x Liters = Moles
We have molarity, so convert mL to liters
250 mL x 1000mL/1 Liter = .25 L
Now, set up the equation
.4 M x .25 L = .1 moles of solute
<span>How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution?
</span>.87 x M1 = .355 x 200
M1 = 81.61 g of the stock solution is needed.