1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shepuryov [24]
3 years ago
11

The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams o

f water? A. 1,040 cal B. 40 cal C. 270,000 cal D. 1.08 cal
Chemistry
2 answers:
forsale [732]3 years ago
7 0
The amount of heat needed to vaporize the given amount of water is the product of the amount in grams and the latent heat of vaporization in cal per gram. That is,
                              H = (540 calories / gram)( 500 grams) = 270,000 cal
Thus, the heat needed is 270, 000 calories. The answer is letter C. 
alexdok [17]3 years ago
6 0
1 g = 540 calories 
<span>500 g = ? calories </span>

<span>Since the mass is 500 times 1 g, so the number of calories </span>
<span>= 500*540 calories
=</span>270,000 <span>calories
Best Option is letter C.</span><span>270,000 cal.</span>
You might be interested in
Determine whether each statement describes an electromagnetic wave, a mechanical wave, or both types of wave.
KiRa [710]

The question is incomplete, the complete question is;

Which statement describes a difference between electromagnetic and mechanical waves?

A. Mechanical waves cannot be longitudinal, but electromagnetic waves can.

B. Electromagnetic waves cannot move particles, but mechanical waves can.

C. Electromagnetic waves do not require a medium, but mechanical waves do.

D. Mechanical waves do not transfer energy, but electromagnetic waves do.

Answer:

Electromagnetic waves do not require a medium, but mechanical waves do.

Explanation:

A wave is defined as a disturbance along a medium which transfers energy. Waves may be classified as mechanical waves or electromagnetic waves based on their medium of propagation.

A mechanical wave requires a material medium for propagation. An example of a mechanical wave is sound waves. Sound waves are propagated in air.

Electromagnetic waves do not require a material medium for propagation. They can travel through space. An example of electromagnetic waves is light waves.

8 0
3 years ago
How to know what gases have more effusion?
OlgaM077 [116]

Answer:

If you have ever been in a room when a piping hot pizza was delivered, you have been made aware of the fact that gaseous molecules can quickly spread throughout a room, as evidenced by the pleasant aroma that soon reaches your nose. Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target.

Explanation:

hope this helps

6 0
3 years ago
Write the chemical equation for the following reaction The elements sodium and chlorine combine to yield the compound sodium chl
Shkiper50 [21]

Answer:Na2S04 + HCl gives

NaCl + H2So4

Explanation:

Displacement reaction

8 0
3 years ago
Octylphenol ethoxylate is a
Nonamiya [84]

Answer:

<em>Octylphenol Ethoxylates are nonionic surfactants composed of ethylene oxide adduct of Octylphenol. ... Octylphenol Ethoxylates can also be used in ether sulfates and ether carboxylates, Cosmetics as well as other industrial and agricultural applications.</em>

Explanation:

3 0
3 years ago
Solar energy, heat, atp, glucose
Leto [7]
16: solar energy, 17: glucose, 18: heat, 19: atp
7 0
2 years ago
Read 2 more answers
Other questions:
  • Which of these statements best describes how an increase in the amount of Sun’s heat reflected by the Earth’s surface and atmosp
    14·1 answer
  • What is the formula for the compound by calcium ions and chloride ions?
    8·1 answer
  • What is the energy of a photon that has a frequency of 0.5 Hz?
    8·1 answer
  • How many moles of water h2o are present in 75.0 g h2o?
    10·1 answer
  • Compare pressure that fluid applies to the bottom of a glass with the pressure it applies to the sides of the glass
    9·1 answer
  • separating a solid from a liquid by evaporating is called _____ a) filtration b) condensation c) solution d) distillation
    9·2 answers
  • Find the density of a cube volume of 150 cm and a mass of 100g
    8·1 answer
  • What is the molarity of an HCl solution if 43.6 mL of a 0.125 M NaOH solution are needed to titrate a 25.0 mL sample of the acid
    7·1 answer
  • Art a the ph of a 0. 25 m aqueous solution of hydrofluoric acid, hf, at 25. 0 °c is 2. 3. What is the value of ka for hf
    15·1 answer
  • 1. Swimming pool manufacturers recommend maintaining the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!