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
gregori [183]
3 years ago
5

What quantity of heat is required to change 20g of ice at -25°c to steam at 120°c

Physics
1 answer:
Oksana_A [137]3 years ago
6 0

Answer: 5289 joules

Explanation:

The quantity of Heat Energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since, Mass of ice = 20 g

C is not provided (Recall that the specific heat capacity of ice is 2.010J/g°C)

Φ = (Final temperature - Initial temperature)

(120°C - (-25°C) =

120°C + 25°C = 145°C

Thus, Q = 20g x 2.010J/g°C x 145°C

Q= 5829J

Thus, 5829Joules of heat energy is required to heat ice

You might be interested in
A plane coming in to land at a busy airport is asked to circle the airport until the air traffic congestion eases off. The pilot
Ber [7]

Answer:

The solution is given in the picture attached below

Explanation:

8 0
3 years ago
What’s the velocity of a sound wave traveling through air at a temperature of 18°C (64.4°F)?
Anna11 [10]

Answer:

342 m/s

Explanation:

The velocity of sound in air is approximated as:

v ≈ 331.4 + 0.6 T

where v is the velocity in m/s and T is the temperature in Celsius.

At T = 18:

v ≈ 331.4 + 0.6 (18)

v ≈ 342.2

The velocity is approximately 342 m/s.

4 0
4 years ago
Read 2 more answers
PLEASE HELP!! DUE SOON!! THANKS BRAINLIEST OFFERED!!
pav-90 [236]

Answer:

real, inverted, and smaller than the object

Explanation:

When the object is placed beyond the center of curvature, the image will formed between the focus and the center of curvature. The size of the image is diminished and its nature is real and inverted.

The whole description is shown in the attached figure. It is clear that the size of the image is smaller than the object.

7 0
4 years ago
An oil droplet is sprayed into a uniform electric field of adjustable magnitude. The 0.11 g droplet hovers
ohaa [14]

Answer:

The direction of the field is downward, and negatively charged particles will experience an upwards force due to the field.

F = N e E     where E is the value of the field and N e the charge Q

M g = N e E      and M g is the weight of the drop

N = M g / (e E)

N = 1.1E-4 * 9.8 / (1.6E-19 * 370) = 1.1 * 9.8 / (1.6 * 370) * E15 = 1.82E13

.00011 kg is a very large drop

Q = N e = M g / E = .00011 * 9.8 / 370 = 2.91E-6 Coulombs

Check:     N = Q / e = 2.91E-6 / 1.6E-19 = 1.82E13   electrons

7 0
3 years ago
In a nuclear station if the temperature of the superheated water starts to decrease what should the engineer in charge of the re
Sophie [7]

Answer:

They sh0uld g0 t0 the reactor and then, see what the issue is...

Explanation:

then, see if they can fix the problem, im sorry if its wr0ng.

8 0
3 years ago
Other questions:
  • In major league baseball, the pitcher's mound is 60 feet from the batter.If a pitcher throws a 89 mph fastball, how much time el
    15·1 answer
  • 2. A solid sphere and a solid cylinder, both uniform and of the same mass and radius, roll without slipping at the same forward
    10·1 answer
  • Will you chech and finish these for me, because I am stumped with them.
    5·1 answer
  • The time it takes two successive crests of an ocean wave to pass a given point is called a _____.
    8·2 answers
  • An elevator supported by a single cable descends a shaft at a constant speed. The only forces acting on the elevator are the ten
    12·1 answer
  • To practice Problem-Solving Strategy 21.1 Coulomb's Law. Three charged particles are placed at each of three corners of an equil
    15·1 answer
  • What happens to the density of gas when it compressed
    12·1 answer
  • What is the kinetic energy of a 6 kg and 2 m long thin rod that rotates with angular velocity of 10 rad/s
    7·1 answer
  • A rebuttal that Rousseau would use to counter the King’s argument?
    8·1 answer
  • A bullet travels at 850 m/s. How long will it take a bullet to go 1000 m?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!