6. How much heat is lost cooling 25 grams of water from 90°C to 45°C?

Mathematics

1 answer:

sergey [27]2 years ago

8 0

Answer:

4,7025 (kJ).

Step-by-step explanation:

1) according to the condition: m=25 gr.; t₂=90; t₁=45; c=4.18 J/(g°C);

2) the formula of required heat is

Q=c*m*(t₂- t₁);

3) according to the formula of heat:

Q=4.18*25*45=4702.5 (J).

You might be interested in

This is a test question for underdstanding this feature

AURORKA [14]

Answer:

i didn't understand what your question is

5 0

2 years ago

The price of a notebook was $3.95 yesterday. Today, the price fell to $3.45. Find the percentage decrease. Round your answer to

Serhud [2]

Step-by-step explanation:

Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me.Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me. Essay on I can and I will. Watch me

4 0

3 years ago

The rates for a long distance telephone call are $0.70 for the first 5 minutes and $0.40 for each additional minute. How much wo

LenKa [72]

$0.56. 0.7/5=$0.14 $0.14 is the amount per minute. so then you would multiply $0.14 x 4= $ 0.56

5 0

3 years ago

What is the value of x in the figure ?

morpeh [17]

Step-by-step explanation:

$2x+15= 145°$