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AlekseyPX
3 years ago
6

Which of the following BEST supports the Big bang theory of the origin of the universe?

Chemistry
1 answer:
inysia [295]3 years ago
7 0

Answer: first one

Explanation:

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How can room things in a house save energy? List at least 5 ways in which you can save heat energy. Explain how each one can sav
pychu [463]

Answer:

brainly

Explanation:

Adjust your day-to-day behaviors.

Replace your light bulbs.

Use smart power strips.

Install a programmable or smart thermostat.

Purchase energy efficient appliances.

3 0
2 years ago
4.1.2 Quiz: What is scientific notation?
Eddi Din [679]

Answer:

D. Scientific notation is a way of writing large and small numbers

3 0
3 years ago
The element carbon exists in several different forms. Pure carbon can be found in the form of diamonds, coal, and the graphite i
UNO [17]

Answer:

B) All carbon atoms have 6 neutrons.

Explanation:

The false statement from the given choices is that all carbon atoms have 6 neutrons.

There is a phenomenon called isotopy in chemistry.

Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons in their various nuclei.

  • These atoms of elements are called isotopes.
  • Carbon atoms generally have proton number of 6 which is the same as the atomic number.
  • As with all atoms, the mass number or atomic mass equals the number of protons and neutrons.

For the isotopes of carbon, their number of neutrons differs.

 For example:

            <em>¹²₆C                           ¹³₆C                        ¹⁴₆C</em>

The number of neutrons differs in the above isotopes.

 Number of neutrons = mass number - atomic number;

    ¹²₆C  , number of neutrons  = 12 - 6  = 6

      ¹³₆C, number of neutrons  = 13 - 6  = 7

       ¹⁴₆C, number of neutrons = 14 - 6  = 8

Therefore, based on the concept of isotopy, all carbon atoms do not have 6 neutrons.

7 0
3 years ago
Copper metal has a specific heat of 0.385 J/goC. Calculate the amount of heat required to raise the temperature of 22.8 g of Cu
Liula [17]

Answer is equal to 7.51 kJ

Q=mc(delta)T

4 0
2 years ago
To find the number of atoms look at the number known as the________. Please help.
Rufina [12.5K]

Answer:

molar mass or AMU

Explanation:

4 0
2 years ago
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