Yea same I tried so hard I think you need to get a expert or look this up on a website or something
Answer:
0.653
Explanation:
1)
M1V1 = M2V2
M1 = 5.04 M
V1 = 229 mL ( you take only this volume)
V2 = 921 mL
5.04*229 = M2 * 921
M2 = (5.04*229)/921 Molarity
2)
M1V1 = M2V2
M1 = (5.04*229)/921
V1 = 100 mL
V2= 192 mL
(5.04*229)/921 *100 = M2 * 192
M2 = [(5.04*229)/921 *100]/192 = 0.653 final molarity
Answer:
is the mole fraction of potassium dichromate.
Explanation:
Mass of potassium dichromate = 24.42 g
Moles of potassium dichromate =
Mass of water = 240.0 g
Moles of water =
Mole fraction is calculated by:
is the mole fraction of potassium dichromate.
Specific Heat-the heat required to raise the temperature of the mass of a substance by a cetain amount
Adhesion-attraction amoung molecules of a different substance.
Cohesion-attraction amoung molecules in a substance
Hydrogen Bonding- a bond between an hydrogen atom and a negative atom
Polar- difference of charge across the molecule
<span>rusting takes a long time, and rusting is a chemical change.</span>
