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borishaifa [10]
2 years ago
9

Water has a known specific heat capacity of 4.184 J/g °C. Use the specific heat

Chemistry
1 answer:
kicyunya [14]2 years ago
3 0

Answer:

Explanation:Calculate the Energy Needed to Change a Solid Into a Liquid ... Heat of fusion is the amount of heat energy required to change the state of matter ... of fusion is: q = m·ΔHf; Note that the temperature does not actually change when ... Useful information: Heat of fusion of water = 334 J/g = 80 cal/g ... m = mass

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What is the molarity of a NaCl stock used to make 750 ml of a dilute 10 mM solution if 5 ml of the concentrated solution was use
ch4aika [34]

Explanation:

The given data is as follows.

          M_{1} = 10 mM = 10 \times 10^{-3} M

          V_{1} = 750 ml,           V_{2} = 5 ml

          M_{2} = ?

Therefore, calculate the molarity of given NaCl stock as follows.

                  M_{1} \times V_{1} = M_{2} \times V_{2}

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2 years ago
Lead (11) oxide dissolves in both
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Answer:

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How many atoms of nitrogen are present in 2.49 moles of nitrogen trifluoride ? atoms of nitrogen?
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<span>Nitrogen trifluoride - NF3.
1 mol NF3 contains 1 mol atoms of Nitrogen
2.49 mol NF3 contains 2.49 mol atoms of Nitrogen

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