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Darina [25.2K]
3 years ago
12

What is the number of molecule(s)?

Chemistry
2 answers:
belka [17]3 years ago
6 0

Answer:

4

Explanation:

Alika [10]3 years ago
4 0
The answer is 4 I believe
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How much work does a gas do when it expands against a constant pressure of 0.600 atm from a volume of 50.00 mL to a volume of 44
miskamm [114]

Answer:

23.71J is the work that the gas do.

Explanation:

The work that a gas do under isobaric conditions follows the formula:

W = P*ΔV

<em>Where W is work in atmL, P is the pressure and ΔV is final volume -Initial volume In Liters</em>

Replacing with the values of the problem:

W = P*ΔV

W = 0.600atm*(0.44000L - 0.0500L)

W = 0.234atmL

In Joules (1atmL = 101.325J):

0.234atmL × (101.325J / 1 atmL) =

<h3>23.71J is the work that the gas do.</h3>

<em />

3 0
2 years ago
If energy increasing or decreasing as you go from a solid to a liquid
Gelneren [198K]
The energy increases because the molecules in water move faster
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3 years ago
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What is the solution to the problem expressed to the correct number of significant figures? 12.0/7.11=?
xxMikexx [17]

Answer:

1.69.

Explanation:

  • The solution = 12.0 / 7.11 = 1.687 = 1.69.
  • The rule of significant figures for division states that: the results are reported to the fewest significant  figures.
  • 12.0 contains 3 significant figures.
  • 7.11 contains 3 significant figures.

So, the solution should contain 3 significant figures.

  • Now, the issue id of rounding; In a series of calculations, carry the extra digits through to  the final result, then round.
  • If the digit to be removed is equal to or greater than 5, the preceding digit is  increased by 1.
  • The digit that should be removed is 7 that is larger than 5 so increase the preceding digit by 1.
3 0
3 years ago
7. what is the density of an object having a mass of 8.0 g and a volume of 25 cm^3? a) 0.32g/cm^3 b) 2.0 g/cm^3 c) 3.1 g/cm^3 d)
natulia [17]
D = m / V

D = 8.0 g  / 25 cm³

D = 0.32 g/cm³

Answer A
6 0
3 years ago
What's the formula of mercury (I) dioxonitrate III​
steposvetlana [31]
<h2>Answer:</h2>

<h3>Hg2 ( NO2 )2</h3>

<h2>Explanation:</h2>

<h3>Formula of mercury ( 1 ) dioxonitrate 111 is Hg2 ( NO2 )2//</h3>

7 0
2 years ago
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