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Viktor [21]
3 years ago
6

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25

and 26 degree Celsius marks. We should properly report the temperature measurement as:
Chemistry
1 answer:
alekssr [168]3 years ago
5 0

Answer: 25.5°C

Explanation: take the average of the reading i.e (25 + 26)/2= 25.5

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Gaseous dichlorine monoxide decomposes readily to chlorine (green) and oxygen (red) gases.
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The reactants are oxygen and nitrogen monoxide.

<h3>What is nitrogen monoxide?</h3>

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To learn more about nitrogen monoxide from the given link:

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1 year ago
Please complete the sentence. You can separate the parts of any mixture by using _____________ processes.
elena55 [62]
I believe the answer is filtration.
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3 years ago
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The orbital radii of four planets in our solar system is shown in the following table. Orbital Radii Planet Orbital Radii (AU) W
nalin [4]

Answer:

w and x

Explanation:

6 0
3 years ago
While you were "sweating" your chemistry test, water vapor evaporates from your body, absorbing 50,000 J of energy. (assume no
TiliK225 [7]

Answer:

\boxed {\boxed {\sf B. \ 22 \ grams}}

Explanation:

We need to use the formula for heat of vaporization.

Q=H_{vap}*m

Identify the variables.

  • The heat absorbed by the evaporating water is the <u>latent heat of vaporization. </u>For water, that is 2260 Joules per gram.
  • Q is the energy, in this problem, 50,000 Joules.
  • m is the mass, which is unknown.

H_{vap}=2260 \ J/g\\Q=50,000 \ J \\

Substitute the values into the formula.

50,000 \ J=2260 \ J/g*m

We want to find the mass. We must isolate the variable, m.

m is being multiplied by 2260 J/g. The inverse operation of multiplication is division. Divide both sides by 2260 J/g.

\frac{50,000 \ J}{2260 \ J/g} =\frac{2260 \ J/g*m}{2260 \ J/g}

\frac{50,000 \ J}{2260 \ J/g} =m

Divide. Note that the Joules (J) will cancel each other out.

\frac{50,000 \ }{2260 \ g} =m

22.1238938 \ g =m

Round to the nearest whole number. The 1 in the tenth place tells us to leave the number as is.

22 \ g \approx m

The mass is about 22 grams, so choice B is correct.

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