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Usimov [2.4K]
3 years ago
14

If 5 J (joules) of electrical energy is used to power an iron, how many joules of heat and steam should it be transformed into?

Chemistry
1 answer:
a_sh-v [17]3 years ago
4 0

Answer:

maybe 25 joules

Explanation:

please mark me as a brainlist

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How many hydrogen atoms are in 7.80 mol of ammonium sulfide?
Alexus [3.1K]

The number  of hydrogen atoms that are in 7.80 moles of ammonium sulfide are  3.756 x 10^25  atoms


<u>calculation</u>

Step  1:  calculate  the  moles of H  in  (NH4)2S

 since there are 8 atoms of  H in (NH4)2S  the moles of

   H =  8 x7.80 =  62.4  mole

 Step  2: use of Avogadro's law  constant  to  determine the number  of  H atom

          that is 1 mole = 6.02 x10^23 atoms

                     62.4 moles=?  atoms

  • cross  multiplication

= [ 62.4  x 6.02 x10^23]/  1 mole= 3.756  x10^25    atoms

7 0
3 years ago
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Please help me with 6 7 8 and don’t send me a link tell me here please
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Answer:

6 b physical properties

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5 0
3 years ago
Name four products of incomplete combustion<br><br> One :<br> Two :<br> Three :<br> Four :
melamori03 [73]

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3 years ago
How many liters of a 3 M NaOH stock solution would you need to make 552 mL of a 105 mM NaOH dilution
Ganezh [65]

Answer:

0.01932 L

Explanation:

First we <u>convert 105 mM to M</u>:

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Then we use the following equation:

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Where:

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We<u> input the given data</u>:

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And <u>solve for V₁</u>:

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7 0
3 years ago
Select all of the items that are true about a sample of water vapor at 101°C as it cools.
Dvinal [7]
<h3><u>Answer;</u></h3>

A) Its temperature will fall continuously until it condensed into a liquid.

<h3><u>Explanation</u>;</h3>
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  • The change of state from gaseous to liquid state occurs as a result of latent heat of vaporization that the water vapor carries.
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