Answer:
2 and 4 so B) II and IV
Explanation:
I false ... stirring speeds up the rate of dissolution because it increases surface area . II is true , III false ... heating up speeds up the rates of dissolution , IV is true .
Answer: -
Zero
Explanation: -
Double bond equivalent or level of unsaturation is the number of unsaturation present in a organic molecule. The term unsaturation may refer to a double bond or a ring system.
The double bond equivalent for an organic compound can be found out by the help of the formula
DBE = C+1 -0.5 H - 0.5 X + 0.5 N
The chemical formula of the compound B = C₇H₁₆O
So there are 7 carbons, 16 hydrogens and 1 oxygen. There is no halogen or nitrogen.
Plugging into the formula,
DBE = 7 + 1 - 0.5 x 16
= 0
Thus there is no unsaturation or double bond present in the compound B with the molecular formula C₇H₁₆O
The given percentage is that of the solute, so we subtract it from 100% to get the percentage of solvent.
a) 50 x 0.95
= 47.5 ml of solvent
b) 1250 x 0.96
= 1200 ml of solvent.
Answer: I aint ever see two pretty grandmas but always one of them got to grab you're face haha jk try c.
Explanation: like I said try c
The answer is either a superphosphate or a triple superphosphate
