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zalisa [80]
3 years ago
7

A sample of a compound has been analyzed and found to contain the following:

Chemistry
1 answer:
nignag [31]3 years ago
8 0

Answer:

CH3O formula, C2H6O2 ACTUAL FORMULA

Explanation:

A sample of a compound has been analyzed and found to contain the following:

38.71% carbon, 9.75% hydrogen, and 51.54% g oxygen. If the molar mass of

the compound is determined by experiment to be between 62 and 63 g, what are the empirical and molecular formulas of the COMPOUND

empitical

take 100 gm of the compound

f O  Divide by atomi wt of O to get moles

51.54/ 16.0 = 3.22

now  if there is 1 atom of  C and one of O, there will be 3 of H, so

CH3O is the empirical formula

the molar mass of the compound  is 62-63.  the mass of CH3O is

12 + 16 +3 = 31

2 X31 =62

so the compound is 2 times CH3O or C2H6O2

it most likely is

Ethylene glycol (name IUPAC: ethane-1,2-diol) is an organic formulated compound (CH2OH)2.

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Answer this correctly, only sincere answers please. I really need help. I will do all I can to make someone answer this. Thanks!
Marrrta [24]

Answer:

See Explanation

Explanation:

Let us recall that;

[H^+] [OH^-] = 1 * 10^-14

Where;

[OH^-] = 1 x 10^-11

Then;

[H^+] = 1 * 10^-14/1 x 10^-11

[H^+] = 1 * 10^-3

pH = -log [H^+]

pH = -log(1 * 10^-3)

pH = 3

Also;

pH + pOH = 14

pOH = 14 - pH

pOH = 14 -3

pOH = 11

8 0
3 years ago
What is the formula for this ionic crystal?
Alex777 [14]

Answer:

Al₄O₅

Explanation:

    The key at the bottom tells us the blue spheres are oxygen atoms and the red spheres are aluminum atoms. By counting, there are 4 aluminum atoms and 5 oxygen atoms. Therefore, the formula is Al₄O₅.

6 0
3 years ago
What will NOT speed up the net rate of diffusion for glucose into a cell?
zaharov [31]

Answer:

Decreasing the number of phospholipids

Explanation:

hope this helps pls mark me brainliest

7 0
3 years ago
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Lerok [7]

Answer:

6.273×10²³

Explanation:

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4 0
4 years ago
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hope this helps if it do mark me as brainlest thank you !!
7 0
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