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
omeli [17]
3 years ago
9

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:
Maslowich3 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
The nucleus of one boron atom has 5 protons and 4 neutrons. Determine the total charge of the boron.
andrey2020 [161]
For the answer to the question determine the total charge of the boron if t<span>he nucleus of one boron atom has 5 protons and 4 neutrons. The answer to this question is +5 for the charge of the boron.

I hope my answer helped you. Have a nice day!</span>
4 0
3 years ago
Read 2 more answers
Which gas occupies the highest volume at STP?
Vedmedyk [2.9K]

The gas, 2 mol of H2, occupies the highest volume at STP since at STP the volume of this gas is approximately 44.8 mol as compared to other options this has the greatest amount.

7 0
4 years ago
Read 2 more answers
Which uses of iron are due to its chemical properties? Select two options.
kondaur [170]

Answer:

producing colored sparks in fireworks and rusting in the presence of water and oxygen

Explanation:

yeet

5 0
3 years ago
Read 2 more answers
Select the correct answer.
hichkok12 [17]

Answer:

A. The model could not explain how alpha particles could be deflected at large angles.

Explanation:

The plum pudding model of the atom was proposed by J. J Thomson. He suggested that that an atom is made up of dense particles of electrons surrounded by positive charges.

From the Gold foil experiment carried out by Ernest Rutherford, he noticed that the bulk of the alpha particles targeted at the foil passed through and a little fraction was heavily deflected back.

Rutherford then presented his nuclear model from here. He suggested a massive, dense and tiny nucleus where the protons and neutrons are located. The space outside the mass is dominated by orbiting electrons.

6 0
3 years ago
BRAINLIEST IF CORRECT
zhannawk [14.2K]

Answer:

1 a person sings into a microphone

2 the sound is converted into an electrical signal

3 the analog signal is converted into a digital signal made of many samples of the digital sound

4 the samples of the sound is converted into 1s and 0s

5 the digital pattern is converted to a medium such as a hard disk or flash drive

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the H+ if the pH of a solution is 1.65?
    11·1 answer
  • An electron in a hydrogen atom drops from energy level e3 to e2. what's the frequency of the emitted photon
    11·1 answer
  • Which substance is oxidized and which is reduced in this reaction?
    14·1 answer
  • In the cores of extremely hot red giants, nuclear reactions convert helium to _____. hydrogen carbon lead argon
    5·2 answers
  • Does absorbance increase or decrease as the solution concentration of the absorbing substance increases?
    11·1 answer
  • What is the IUPAC name for the compound FeS?
    7·2 answers
  • Calcium oxide (CaO) reacts with tetraphosphorus decoxide (P4O10) to form calcium phosphate (Ca3(P4O10)2) according to this equat
    10·1 answer
  • if atom X has 6 protons,6 neutrons and 6 electrons and aton Z has 6 protons,7neutrons and 6 electrons,atom x and atom z are isot
    12·1 answer
  • Water’s heat of vaporization is 2,257 joules/gram. How much energy is released when 11.2 grams of water vapor condenses into liq
    14·1 answer
  • Ocean currents carry water in a certain direction
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!