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natita [175]
2 years ago
5

What is the mass of ethane at STP with a density of 2.1 g/L.

Chemistry
1 answer:
inessss [21]2 years ago
4 0

Answer:

i d k

Explanation:

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Balance the following reaction:
kvv77 [185]
  • C_5H_8+13/2O_2—»5CO_2+4H_2O

Balanced one

  • 2C_5H_8+13O_2—»10CO_2+8H_2O

Moles of Pentyne

  • Given mass/Molarmass
  • 34/68
  • 0.5mol

Moles of H_2O

  • 8/2(0.5)
  • 4(0.5)
  • 2mol

1mol releases 241.8KJ

2mol releases 241.8(2)=483.6KJ

8 0
1 year ago
Will an object with a density of 0.999 sink or float
Semmy [17]

The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in.

7 0
3 years ago
Which of the following choices is NOT a characteristic of unicellular:
marysya [2.9K]

Answer:

B. Consists of many cells

Explanation:

Unicellular organisms consist of one singular cell. While multicellular organisms consist of many cells

4 0
2 years ago
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What electives should i take in highschool to prepare to take criminology?
dybincka [34]

Answer:

depending on what school you go to and what classes you are allowed to take in which grades, you should take forensics.

4 0
2 years ago
If 2.27 moles of bromine react with excess phosphorus, how many moles of phosphorus tribromide will be produced
zalisa [80]

Answer:

The answer to your question is 1.51 moles of PBr₃

Explanation:

Data

moles of Br = 2.27

moles of PBr₃ = x

Balanced chemical reaction

                   2P   +   3Br₂  ⇒   2PBr₃

             Reactant      Element     Products

                   2                  P                 2

                   6                  Br                6

-Use proportions to find the answer

              3 moles of Br₂ ------------------  2 moles of PBr₃

         2.27 moles of Br₂ ------------------  x

               x = (2.27 x 2) / 3

               x = 4.54 / 3

              x = 1.51 moles

7 0
3 years ago
Read 2 more answers
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