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seropon [69]
2 years ago
15

List the types of electricity

Chemistry
2 answers:
Lilit [14]2 years ago
7 0
There are 2 types of electricity, static electricity and current electricity
katovenus [111]2 years ago
6 0

Answer:

Static Electricity and Current Electricity

Explanation:

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0.820 L has a mass of 2.56kg what is the density of this liquid in kg/L
3241004551 [841]

Density ρ=\frac{m}{v}

=\frac{2.56 kg}{0.820 L} \\=3.121kg/L

8 0
3 years ago
A balloon filled with helium occupies 20.0 l at 1.50 atm and 25.0◦c. How many moles of helium will there be in the balloon at st
satela [25.4K]

Answer:

  • There will be 1.23 moles of helium in the balloon at STP

Explanation:

1) <u>Initial conditions of the helium gas</u>:

  • V = 20.0 liter
  • p = 1.50 atm
  • T = 25.0 °C = 25.0 + 273.15 K = 298.15 K

2) <u>Ideal gas equation</u>:

  • pV = n RT
  • p, V, and T are given above
  • R is the Universal constant = 0.0821 atm-liter / ( K - mol)
  • n is the unknown number of moles

3) <u>Solve for n</u>:

  • n = pV / (RT) =
  • n = 1.50 atm × 20.0 liter / (0.0821 atm-liter /k -mol ×298.15K)
  • n = 1.23 mol

4) <u>At STP:</u>

  • STP stands for standard pressure and temperature.
  • The amount (number of moles) of the gas will not change because the change of pressure and temperature, so the number of moles reamain the same: 1.23 mol.
8 0
2 years ago
How do helpful variations increase in a species over time?
Vladimir [108]

Answer:

through natural selection

Explanation:

Natural selection is the driving mechanism of the evolution of species. Organisms can survive more in an environment if they are capable to adapt the changing environmental conditions. After surviving they are also able to pass their modified trait into their future generations (evolution).

Helpful variations accumulate through natural selection, as the organisms that are better adapted to their environment reproduce offspring with the same variations.

7 0
3 years ago
How does heat gases cause increase in pressure?
Amanda [17]

Answer:

Explanation:

A is the correct answer.

If you found my answer useful then please mark me brainliest

5 0
3 years ago
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What element has a mass number of 65 and 36 neutrons?
cestrela7 [59]
According to the table of elements the answer is Zinc :)
7 0
3 years ago
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