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Jlenok [28]
3 years ago
6

What do we call the experimental apparatus that William crooks used in his experiments and what did he discover

Chemistry
1 answer:
34kurt3 years ago
4 0

Answer: It is called a Crookes Tube, and he used it to discover cathode rays, which were later determined to be electrons.

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Define radioactivity and write down properties of radioactive Ray's
BlackZzzverrR [31]

Answer:

Explanation:

So basically is just explain what radioacitvity and then radidoactive

Radioactivity is the spontaneous release of energy from an unstable atom to get to a more stable state. Ionizing Radiation is the energy that comes out of a radioactive atom. Radioactive isotopes are radioactive atoms of the same element that have different numbers of neutrons.

6 0
3 years ago
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Part 1. A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equat
galben [10]

The mass of NaCl needed for the reaction is 91.61 g

We'll begin by calculating the number of mole of F₂ that reacted.

  • Volume (V) = 12 L
  • Temperature (T) = 280 K
  • Pressure (P) = 1.5 atm
  • Gas constant (R) = 0.0821 atm.L/Kmol
  • Number of mole (n) =?

PV = nRT

1.5 × 12 = n × 0.0821 × 280

18 = n × 22.988

Divide both side by 22.988

n = 18 / 22.988

n = 0.783 mole

Next, we shall determine the mole of NaCl needed for the reaction.

F₂ + 2NaCl —> Cl₂ + 2NaF

From the balanced equation above,

1 mole of F₂ reacted with 2 moles of NaCl.

Therefore,

0.783 mole F₂ will react with = 0.783 × 2 = 1.566 moles of NaCl.

Finally, we shall determine the mass of 1.566 moles of NaCl.

  • Mole = 1.566 moles
  • Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol
  • Mass of NaCl =?

Mass = mole × molar mass

Mass of NaCl = 1.566 × 58.5

Mass of NaCl = 91.61 g

Therefore, the mass of NaCl needed for the reaction is 91.61 g

Learn more about stiochoimetry: brainly.com/question/25830314

6 0
2 years ago
The idea that the behavior of the states of matter is determined by the kinetic energy and movement of their particles is called
Savatey [412]

Answer:

C . Kinetic Molecular Theory

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3 years ago
In the world of chemisty, a 'mole is a number of something ... a very lary large number of something.
yulyashka [42]
Just as a dozen is 12 of something, a mole is about 6.02 * 10^23 of something .
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Which milligram quantity contains a total of four significant figures
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D has a total of four significant figures.
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3 years ago
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