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Lilit [14]
3 years ago
6

Why was the discovery of high temperature superconductors so startling to scientists?

Chemistry
1 answer:
Klio2033 [76]3 years ago
8 0
  • high temperature superconductors is so important .
  • They have High melting point so they can be used in heating process like oven .
  • They are too easily found so its more affordable .
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Define mass number
Ganezh [65]

Answer:

protons plus neutrons

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons.

The sum of neutrons and protons is the mass number of an atom.

Mass number = number of protons + number of neutrons

while the number of protons or number of electrons is the atomic number of an atom.

8 0
2 years ago
A balloon with a volume of 336.0 mL starts at a temperature of 328K. It is placed in cool water
larisa [96]

Answer:

306.43 K

Explanation:

- Use Charle's law and rearrange formula (V1/T1=V2/T2)

- Hope this helped! Let me know if you would like me to show you step-by-step how to do these types of problems.

7 0
3 years ago
Karen measures the volume of gas at 200 K and 100 kPa. To correct her measurement to standard temperature and pressure (STP), wh
Mice21 [21]
I believe the correct answer from the choices listed above is option A. To correct her measurement to standard temperature and pressure (STP), she should <span>make a volume correction based on a higher temperature of 273 K. Hope this answers the question. Have a nice day.</span>
8 0
2 years ago
Read 2 more answers
Help me this 2 . I’m not good at this sorry
emmainna [20.7K]

Left is respiratory

Right is circulatory

6 0
3 years ago
The temperature of a 100.0 g sample of water is raised from 30degrees celsius to 100.0 degrees celsius. How much energy is requi
worty [1.4K]

Answer:

29260J

Explanation:

Given parameters:

Mass of water sample  = 100g

Initial temperature = 30°C

Final temperature  = 100°C

Unknown:

Energy required for the temperature change = ?

Solution:

The amount of heat required for this temperature change can be derived from the expression below;

     H  = m c (ΔT)

H is the amount of heat energy

m is the mass

c is the specific heat capacity of water  = 4.18J/g°C

ΔT is the change in temperature

Now insert the parameters and solve;

          H  = 100 x 4.18 x (100 - 30)

          H  = 100 x 4.18 x 70 = 29260J

6 0
2 years ago
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