2 years ago

If 200 g of water is heated from 20 C to 40 C, then what is the heat added in kilocalories (same as food calories)?

Chemistry

1 answer:

Maslowich2 years ago

8 0

Answer: 4Kcal

Explanation:

H= mcø

M=200g

C= 1 cal/g/°c

Ø= 40-20=20°c

H= 200*1*20= 4000calories= 4Kcal

You might be interested in

Which is one characteristic of producers?

ludmilkaskok [199]

Answer: They use other organisms for energy

Explanation:

8 0

2 years ago

According to the law of conservation of energy, the energy released by the system must be transferred to and absorbed by the sur

Andrew [12]

True!
Energy released by system is absorbed by surroundings.

5 0

3 years ago

Balance the following chemical equation Na + Cl2 -> NaCl and explain how the balanced equation models the law of conservation

Alexus [3.1K]

Answer:

2 Na + 1 Cl2 -> 2 NaCl

Explanation:

The answer is really simple, because if you have 1 nonmetal element that has a subscript of 2, you need to multiply the product and the first reactant by 2 to balance it.

7 0

3 years ago

Josh performs an experiment to see how different brands of fertilizer will affect the growth of tomato plants. The amount of su

mestny [16]

It is A. Independent variable

5 0

2 years ago

12. Photosynthesis builds sugars out of small molecules, making it an

JulsSmile [24]

Answer:

Condensation reaction/ direct synthesis reaction

Explanation:

Combines simple molecules to form complex molecules producing water

8 0

2 years ago