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4 years ago

The formula C2H4 can be classified as

Chemistry

2 answers:

blsea [12.9K]4 years ago

7 0

The formula C2H4 can be classified as both a molecular formula and an empirical formula. The answer is number 4.

kicyunya [14]4 years ago

4 0

It is a molecular formula for ethene and an empirical formula for an organic compound higher than it by -CH2.

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NiSe2 + Ca3(PO4)2 = Ni3(PO4)2 + CaSe<br><br> balance please

Aliun [14]

3Ni + Sn3(PO4)2 → Ni3(PO4)2 + 3Sn I think. Not for sure though

8 0

2 years ago

Why is the atomic mass of most elements not a whole number?

Crank

The atomic mass is the average of the isotopes of the element meaning most averages of isotopes will not be whole numbers

3 0

3 years ago

A reaction was suppose to produce 20 L of gas. Only 12 litters of gas were produced in the lab. What is the percent yield for th

pogonyaev

Answer:

$\boxed {\boxed {\sf 60 \%}}$

Explanation:

Percent yield is a ratio of the actual yield to the theoretical yield. It is found using this formula:

$\% \ yield= \frac {actual \ yield}{theoretical \ yield} *100$

The actual yield is 12 liters, because that was actually produced in the lab.

The theoretical yield is 20 liters, because that was the expected yield.

$\% \ yield= \frac {12 \ L}{20\ L} *100$

$\% \ yield= 0.6*100$

$\% \ yield= 60$

For this reaction, the percent yield is 60%.

5 0

3 years ago

Alcl3+Na =NaCl+ Al .did Al change oxidation number

saul85 [17]

Answer:

yes it is ( From +3 to 0 )

Explanation:

If this is the balanced equation:

AlCl3 + 3Na ——> 3NaCl + Al

Al Cl 3Na Na Cl Al

+3 -3 0 +1 -1 0

5 0

4 years ago

How to balance Mg3n2+H20>>Mg(oh)2+Nh3?

alexandr1967 [171]

Mg₃N₂ + 6H₂O = 3Mg(OH)₂ + 2NH₃

4 0

3 years ago