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3 years ago

9

imagine eight sulfur atoms bound together in a solfur molecule. would this be a compound of sulfur, or would it be the element s

ulfur?

1 answer:

givi [52]3 years ago

4 0

Answer: It would be the element sulfur

Explanation:

The reason for that is because it is the same atom of sulfur. No other atoms are being added to it. A compound is various elements combined together.

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Separates substances based on their movement through a special paper

Rama09 [41]

This sounds like paper chromatography. Let me know in the comments if the answer is something else.

4 0

4 years ago

PLEASE HELP: What are the reactants?

g100num [7]

Answer:

Reactants are substances that start a chemical reaction, and products are substances that are produced in the reaction

Explanation:

Hope This Helps

8 0

3 years ago

What is the molecular formula of the hydrocarbon whose molar mass is 536 g/mol and contains 89.55 w/w% carbon?

leonid [27]

Given the percentage composition of HC as C → 81.82 % and H → 18.18 %

So the ratio of number if atoms of C and H in its molecule can will be:

C : H = 81.82 12 : 18.18 1 C : H = 6.82 : 18.18 = 6.82 6.82 : 18.18 6.82 = 1 : 2.66 ≈ 3 : 8

So the Empirical Formula of hydrocarbon is:

C 3 H 8

As the mass of one litre of hydrocarbon is same as that of C O 2 The molar mass of the HC will be same as that of C O 2 i.e 44 g mol

Now let Molecular formula of the HC be ( C 3 H 8 ) n

Using molar mass of C and H the molar mass of the HC from its molecular formula is:

( 3 × 12 + 8 × 1 ) n = 44 n So 44 n = 44 ⇒ n = 1

Hence the molecular formula of HC is C 3 H 8

Does that help?

7 0

3 years ago

Calculate the percent yield if 52.9 g of ethanol reacts to produce 26.7 g of ether.

blagie [28]

Answer:

The % yield is 62.7 %

Explanation:

<u>Step 1:</u> the balanced equation

2CH3CH2OH(l) → CH3CH2OCH2CH3(l) + H2O(l)

<u>Step 2:</u> Data given

mass of ethanol = 52.9 grams

molar mass of ethanol = 46.07 g/mol

mass of ether = 26.7 grams

Molar mass of ether = 74.12 g/mol

<u>Step 3:</u> Calculate moles of ethanol

Number of moles = Mass / molar mass

Moles of ethanol = 52.9 grams / 46.07 g/mol

Moles of ethanol = 1.15 moles

<u>Step 4: </u>Calculate moles of ether

For 2 moles of ethanol consumed, we have 1 mole of ether produced

For 1.15 moles of ethanol consumed, we have 1.15/2 = 0.575 moles of ether produced

<u>Step 5:</u> Calculate mass of ether

Mass = moles * Molar mass

Mass ether = 0.575 moles * 74.12 g/mol = 42.62 grams = theoretical yield

<u>Step 6:</u> Calculate % yield

% yield = (26.7 / 42.62) * 100 = 62.7%

The % yield is 62.7 %

6 0

4 years ago

What are metallic bonds?

klemol [59]

Metallic bonds are forces that holds atoms together in a marlin substance

7 0

3 years ago