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vfiekz [6]
3 years ago
13

Nonmetals are ___.

Chemistry
1 answer:
Shkiper50 [21]3 years ago
5 0
Poor conductors of heat
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Calculate the enthalpy of formation of butane, C4H10, using the balanced chemical
melisa1 [442]

Answer:

-125.4

Explanation:

Target equation is 4C(s) + 5H2(g) = C4H10

These are the data equations for enthalpy of combustion

  1. C(s) + O2(g) =O2(g) -393.5 kJ/mol * 4
  2. H2(g) + ½O2(g) =H20(l) = 285.8 kJ/mol * 5
  3. 2CO2(g) + 3H2O(l) = 13/2O2 (g) + C4H10 - 2877.1 reverse

To get target equation multiply data equation 1 by 4; multiply equation 2 by 5; and reverse equation 3, so...

Calculate 4(-393.5) + 5(-285.8) + 2877.6 and you should get the answer.

7 0
3 years ago
Which of the following correctly describes voltage difference?
7nadin3 [17]
Voltage difference is the push that causes charges to flow from high to low areas.
7 0
3 years ago
The disturbance of a supersaturated solution will cause
Flura [38]
The disturbance of a supersaturated solution will cause precipitation. A supersaturated solution is a solution that contains more solute than the solvent can dissolve. When this type of solution is disturbed like when it is moved, the formation of a solid is observed immediately.
3 0
3 years ago
Please fast but right no link or bot
Aneli [31]

Answer:

bro wheres the question

Explanation:

ty for points:)

5 0
2 years ago
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Find the number of grams <br><br>4.00 moles of CU(CN)2 ​
USPshnik [31]

Answer:

462g

Explanation:

First, let us calculate the molar mass of Cu(CN)2. This is illustrated below:

Molar Mass of Cu(CN)2 = 63.5 + 2(12+14) = 63.5 + 2(26) = 63.5 + 52 = 115.5g/mol

Number of mole of Cu(CN)2 given from the question = 4moles

Mass = number of mole x molar Mass

Mass of Cu(CN)2 = 4 x 115.5

Mass of Cu(CN)2 = 462g

4 0
3 years ago
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