All categories

3 years ago

How many calories are released when 6 grams of 100°C steam turns to 0°C ice?

Physics

1 answer:

maks197457 [2]3 years ago

6 0

Answer: 4276.2 calories

Explanation:

Given

mass of steam is 6 gm at $100^{\circ}C$

Conversion of steam to ice involves

steam to water at $100^{\circ}C$

water at $100^{\circ}C$ to water at $0^{\circ}C$

water to the ice at $0^{\circ}C$

Calories released during the conversion of steam to water at $100^{\circ}C$

$E_1=mL_v\quad [L_v=\text{latent heat of vaporisation}]\\E_1=6\times 533=3198\ cal.$

Calories released during the conversion of water at $100^{\circ}C$ to water at $0^{\circ}C$

$E_2=mc(\Delta T)\quad [c=\text{specific heat of water,}1\ cal./gm.^{\circ}C]\\E_2=6\times 1\times 100=600\ cal.$

Calories released during the conversion of water to the ice at $0^{\circ}C$

$E_3=mL_f\quad [L_f=\text{latent heat of fusion}]\\E_3=6\times 79.7=478.2\ cal.$

The total energy released is

$E=E_1+E_2+E_3\\E=3198+600+478.2=4276.2\ cal.$

You might be interested in

single goose sounds a loud warning when an intruder enters the farmyard. Some distance from the goose, you measure the sound lev

Goryan [66]

Answer:

The sound level of the 26 geese is $Z_{26}= 96.15 dB$

Explanation:

From the question we are told that

The sound level is $Z_1 = 81.0 \ dB$

The number of geese is $N = 26$

Generally the intensity level of sound is mathematically represented as

The intensity of sound level in dB for one goose is mathematically represented as

$Z_1 = 10 log [\frac{I}{I_O} ]$

Where I_o is the threshold level of intensity with value $I_o = 1*10^{-12} \ W/m^2$

$I$ is the intensity for one goose in $W/m^2$

For 26 geese the intensity would be

$I_{26} = 26 * I$

Then the intensity of 26 geese in dB is

$Z_{26} = 10 log[\frac{26 I }{I_o} ]$

$Z_{26} = 10 log (\ \ 26 * [\frac{ I }{I_o} ]\ \ )$

$Z_{26} = 10 log (\ \ 26 \ \ ) * (\ \ 10 log [\frac{ I }{I_o} ]\ \ )$

From the law of logarithm we have that

$Z_{26} = 10 log 26 + 10 log [\frac{I}{I_0} ]$

$= 14.15 + 82$

$Z_{26}= 96.15 dB$

4 0

3 years ago

A +0.05 C charge is placed in a uniform electric field pointing downward with a strength of 100 Newtons over Coulombs.. Determin

shtirl [24]

The magnitude of the electric force on the charge is 5 N.

<h3>Magnitude of force on the charge</h3>

The magnitude of force on the charge is calculated as follows;

F = Eq

where;

E is electric field
q is magnitude of the charge

F = 100 N/C x 0.05 C

F = 5 N

Thus, the magnitude of the electric force on the charge is 5 N.

Learn more about electric force here: brainly.com/question/20880591

#SPJ1

8 0

2 years ago

A yo-yo has a string that is 0.95 m in length. What is the period of oscillation if the yo-yo is allowed to swing back and forth

yulyashka [42]

Answer:

Explanation:

As we know the , equation of time period for simple pendulum ,

T = 2*pi* $\sqrt{l/g}$

hence putting values we get ,

the solution is in picture ,

please

Brain-list it or support me at my U-Tube channel " ZK SOFT&GAMING " I will be thankful

5 0

3 years ago

Identify one common cuase of the inreasing of overweight and obese people in the United States

amid [387]

The most common one is junk food and sugary snacks are very very addicting! they are almost like drugs!!!

4 0

3 years ago

Read 2 more answers

An air bubble is at a depth of 3 m below

lisabon 2012 [21]

Answer:

incorrect its 987 for exact

4 0

3 years ago