A theory is something that has been proven a few times, so yes it’s been consistent in science but not enough. A law is something multiple scientists have proven to be true multiple times, causing it to be a law.
Answer:
weather tis is answer for que
Molecular weight of vanillin = 152 g/mol
Futher molecular formula of vanillin is C8H8O3
Atomic weight of oxygen = 16 g/mol
Thus, 152 g of vanillin contains 16 g of oxygen
∴ 0.045 g (45 mg) of vanillin contains
= 0.00473 g
Also, number of moles of vanillin in 0.045 g sample =
Now, 1 mole = 6.023 X 10^23 molecules
∴ 2.96 X 10^-4 mole = 1.78 X 10^20 molecules
From molecular formula, it can be seen that 1 molecule of vanallin contain 3 atoms of oxygen
∴1.78 X 10^20 molecules contain 3 X 1.78 X 10^20 = 5.34 X 10^20 oxygen atoms
Answer:
2, Argon PLEASE VOTE 5.0 MARK ME BRAINLIEST AND THANK ME
Explanation:
2,Argon because its only logic answer PLEASE VOTE 5.0 MARK ME BRAINLIEST AND THANK ME
Answer:
dimethoxy(phenyl)methanol
Explanation:
For this question, we have to remember the <u>mechanism of the Grignard reaction</u>. In this case, <u>phenylmagnesium bromide</u> is our <u>nucleophile</u>, a carbo-anion is produced (step 1). Then this <u>carbo-anion</u> can <u>attack</u> the <u>carbonyl group</u> in the <u>dimethyl carbonate</u>, the double bond is delocalized into the oxygen producing a <u>negative charge</u> (step 2). Finally, with the addition of the h<u>ydronium ion</u> (), the anion can be protonated to produce the <u>alcohol</u> (dimethoxy(phenyl)methanol) (step 3).
See figure 1
I hope it helps!