Ask question

Ask question

All categories

3 years ago

13

The molar heat of vaporization of water is 40.7 kJ mol . How much heat must be absorbed to convert 50.0 grams of liquid water at

100oC to steam at 100oC?

1 answer:

podryga [215]3 years ago

8 0

Molar mass of water 18g/mol

Number of mols = 50.0g/18g/mol =2.78 mol

Heat absorbed = 40.7 kj/mol * 2.78 mol = 113.1 kj.

You might be interested in

The correct sequence where reactivity towards oxygen increases.

ziro4ka [17]

Answer:

Option D is good to go!

Explanation: as per the reactivity series more reactive substances will react with the counterpart substance.The most reactive substance here is calcium while the least reactive is aluminium, the magnesium comes in between.As per their reactivity, these substances will react with oxygen.

Explanation:

3 0

3 years ago

How many times more basic is a solution with a pH of 10 than a solution with a pH of 8

lina2011 [118]

You may want to ask the questions seperatly more likely for someone to answer

4 0

3 years ago

2Fe2O3+3C_4Fe+3 CO2 how many moles of Carbon are needed to produce 1.9 moles of iron (Fe)?

Bad White [126]

Um use English no offense

7 0

2 years ago

At 25 °C, what is the hydroxide ion concentration, [OH−] , in an aqueous solution with a hydrogen ion concentration of [H+]=4.8×

algol [13]

[OH⁻]= 1 x 10⁻¹⁴ : 4.8 x 10⁻⁴ = 2.083 x 10⁻¹¹

3 0

1 year ago

What happens to ice as it melts energy

KonstantinChe [14]

Answer:

Energy is added (postive enthalpy)

Explanation:

Ice melting means solid turns into liquid. Solid is more stable than liquid thus you must put in energy to weaken the forces of solid and turn it into liquid. Thus, you must put in energy to melt ice. This makes the enthalpy of the system to be positive.

5 0

1 year ago