Hey there!
Sucrose is C₁₂H₂₂O₁₁.
Find molar mass of sucrose:
C: 12 x 12.01 = 144.12
H: 22 x 1.008 = 22.176
O: 16 x 11 = 176
--------------------------------
342.296 grams
That is the mass of one mole of sucrose.
We have 0.0287.
342.296 x 0.0287 = 9.82
The mass of 0.0287 moles of sucrose is 9.82 grams.
Hope this helps!
The last one is the correct answer. The atomic structure can be broken down which is what the findings concerning protons, electrons and neutrons showed. The theory was thus modified. What remained was no chemical reaction could affect the basic structure of an atom.
Still the last choice is still true. The first choice is your second best answer because of what I wrote in the last sentence of the above paragraph.
Last Choice <<<<< answer
Can u be a little more specific so that I can help u
I will edit when u specify a little more.
Have a great day.
Answer:
The answer to your question is 43.9%
Explanation:
Data
ZnSO₄ 7H₂O
percent of H₂O
Process
- Calculate the molar mass of the molecule
molar mass of ZnSO₄ 7H₂O = 65 + 32 + (14 x 1) + (11 x 16)
= 287g
molar mass of H₂O = (2 x 1) + 16 = 18 g x 7 = 126 g
- Calculate the mass percent of water
287 g ------------------------- 100%
126 g ------------------------- x
x = (126 x 100)/287
x = 43.9 %
