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lara [203]
3 years ago
12

2. Points

Chemistry
1 answer:
OLEGan [10]3 years ago
3 0

Answer:

D

Explanation:

Logitudinal waves also known as compression waves.

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What is the name of the following Arrhenius acid, H3PO3?
pentagon [3]

Answer:

Phosphorous acid

Explanation:

8 0
3 years ago
Two different substances of the same mass will have the same specific heat capacity. True or false?
Natalija [7]
The answer to your question is true.
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4 years ago
What chemical is added to natural gas in case of gas leaks?
tatiyna
If I remember correctly, it's some natural gas that contains methane..hope they don't need the full name. It's somewhere online im sure
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What pressure will be necessary to compress 2 liters of a gas at 1 atm to a volume of 0.05 liters if the temperature remains con
PtichkaEL [24]
<h3>Answer:</h3>

40 atm

<h3>Explanation:</h3>
  • According to Boyle's law, the pressure and the volume of a fixed mass of a gas are inversely proportional at constant absolute temperature.
  • That is; P\alpha \frac{1}{V}
  • At varying pressure and volume,

P1V1 =P2V2

In this case,

Initial volume, V1 = 2 L

Initial pressure, P1 = 1 atm

New volume, V2 = 0.05 L

We are required to calculate the new pressure,

Rearranging the formula;

P2 = P1V1 ÷ V2

     = (1 atm × 2L) ÷ 0.05 L

     = 40 atm

Therefore, the pressure required is 40 atm

8 0
3 years ago
In an atom of an element there are a fixed number of electrons. If the total mass of electrons in 1 mole (6.022 x 1023) of atoms
prohojiy [21]

Answer:

No. of protons = 34

Explanation:

First we need to calculate the number of electrons in one mole of the the element:

No. of electrons per mole = Total Mass of Electrons/Mass of 1 Electron

No. of electrons per mole = (18.65 x 10⁻³ g)/(9.109 x 10⁻²⁸ g)

No. of electrons per mole = 2.04 x 10²⁵ electrons/mol

Now, we calculate the no. of electrons in 1 atom:

No. of electrons per atom = No. of Electrons per mole/No. of atoms per mole

No. of electrons per atom = (2.04 x 10²⁵ electrons/mol)/(6.022 x 10²³ atoms/mol)

No. of electrons per atom = 34 electrons/atom

Since, the no. of protons in a pure element are equal to the number of electrons. Therefore,

<u>No. of protons = 34</u>

5 0
3 years ago
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