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Allushta [10]
3 years ago
10

Determine the molar mass of a compound that has a density of 1.25 g/L at STP. * *

Chemistry
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

So, weight per litre (1.25g/l) times 22.4 l/mole equals the mole weight (28 g/mole).

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Answer:

I agree

Explanation:

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3 years ago
A student must use 220 mL of hot water in a lab procedure. Calculate the amount of heat required to raise the temperature of 220
Inessa [10]

Answer:

64,433.6 Joules

Explanation:

<u>We are given</u>;

  • Volume of water as 220 mL
  • Initial temperature as 30°C
  • Final temperature as 100°C
  • Specific heat capacity of water as 4.184 J/g°C

We are required to calculate the amount of heat required to raise the temperature.

  • We know that amount of heat is calculated by;

Q = mcΔT , where m is the mass, c is the specific heat, ΔT is the change in temperature.

Density of water is 1 g/mL

Thus, mass of water is 220 g

ΔT = 100°C - 30°C

    = 70°C

Therefore;

Amount of heat, Q = 220g × 4.184 J/g°C × 70°C

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Thus, the amount of heat required to raise the temperature of water is 64,433.6 Joules

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3 years ago
Explain why 0.76 * 103 would not be considered a correct answer for a scientific notation problem? What should be done to fix th
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The decimal should be after the 7 and before the 6.
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4 years ago
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