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
Pepsi [2]
3 years ago
7

A 200 g piece of ice at 0°C is placed in 500 g of water at 20°C. The system is in a container of negligible heat capacity and in

sulated from its surroundings.
a. What is the final equilibrium temperature of the system?
b. How much of the ice melts?
Physics
1 answer:
liraira [26]3 years ago
3 0

Solution :

Given data :

Mass of ice, m = 200 g

Mass of water, M = 500 g

Temperature of ice = 0°C

Temperature of water = 20°C

We known ;

The latent heat of fusion of water is L=333.5 \ kJ/kg

The specific heat of water, C = 4.18 kJ/kg K

a). Heat required to change the ice into water is :

Q=mL

Q= 200 \times 10^{-3} \times 333.5 \times 10^3

  = 66700 J

Heat required to cool the warm water is :

$Q' = MC \Delta T$

    $=500 \times 10^{-3} \times 4.18 \times 10^3 \times (20-0)$

    $=41800\ J$

From above result,

Q > Q'

This means that total ice could not melt.

So, the temperature must be T = 0°C

b). Q' = mL

$m=\frac{Q'}{L}

$m=\frac{41800}{333.5 \times 10^3}$

m = 0.1253 kg

m = 125.3 g

m = 125 g

Therefore, 125 g of ice had melted.

You might be interested in
PLEASE HELP ME Color corresponds to the ______________ of light waves. wave speed cycles wavelength
lorasvet [3.4K]
Wavelength. Each wavelength is a certain color. For instance, shorter wavelengths (like 470nm) will be blue or violet, while longer wavelengths (like 650nm) will be red. Hope this helps! :)
5 0
4 years ago
How to calculate kinetic energy given mass and velocity
sashaice [31]

In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

3 0
3 years ago
I NEED a LOT of help PLEASE!
Minchanka [31]
Infrared, visible light, then ultraviolet. Infrared is light that the human eye can not see and visible light is clearly light we can see then ultraviolet is has such a high frequency we can't see it either.
3 0
3 years ago
Read 2 more answers
Who showed that our universe is heliocentric—the planets of the solar system revolve around the sun? Johannes Kepler Isaac Newto
denis23 [38]

Answer:

Option (3)

Explanation:

Nicolaus Copernicus was an astronomer from Poland, who was born on the 19th of February in the year 1473. He played a great role in the field of modern astronomy.

He was the person who contributed to the heliocentric theory. This theory describes the position of the sun in the middle of the universe, and all the planets move around the sun. This theory was initially not accepted, and after about a century it was widely accepted.

This theory describes the present-day motion of the planets around the sun in the solar system. This theory replaced the geocentric theory.

Thus, the correct answer is option (3).

6 0
3 years ago
What is used to create the sequential order of elements?
algol [13]
Atomic Number
or
Number of Protons

ΩΩΩΩΩΩΩΩΩΩ
5 0
3 years ago
Read 2 more answers
Other questions:
  • The sun produces 3.826 x 1026 Joules of energy every second as it combines smaller hydrogen atoms into larger helium atoms. What
    15·2 answers
  • What is the difference between reflection and refraction
    5·1 answer
  • An object of mass 100kg is released from rest and falls through a distance of 10m.what is the work done by gravity
    6·1 answer
  • If you are the driver or owner of a vehicle which is in a crash that is your fault, and you are not insured in compliance with t
    11·1 answer
  • Calculate the centripetal force on the end of a 100 m (radius) wind turbine blade that is rotating at 0.5 rev/s. Assume the mass
    11·1 answer
  • What is the blood resistivity if a 9.0 v potential difference causes a 210 μa current through the blood in the vein?
    10·1 answer
  • The acceleration of a particle traveling along a straight line isa=14s1/2m/s2, wheresis in meters. Ifv= 0,s= 1 m whent= 0, deter
    7·1 answer
  • 8. According to the passage, in order for LeBron James to score a slam-dunk, what must he<br> exert?
    5·2 answers
  • An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the max
    8·1 answer
  • It takes 399 newtons to move a 7.2 kg object. What is the acceleration of the object?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!