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mina [271]
3 years ago
9

1. How many MOLECULES are contained in 80.0 grams of sodium hydroxide?

Chemistry
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

2 molecules

Explanation:

In 80 grams there will be 2 molecules of NaOH, so mass of Sodium would be 23 x 2 = 46g.

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1 year ago
A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree
lions [1.4K]

Answer:

The new temperature of the water bath 32.0°C.

Explanation:

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Amount of energy lost by water = -Q = -69.0 kJ = -69.0 × 1000 J

( 1kJ=1000 J)

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-69.0\times 1000 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)

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T_2=304.86 K=304.86 -273^oC=31.86^oC\approx 32.0^oC

The new temperature of the water bath 32.0°C.

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