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miv72 [106K]
3 years ago
8

How did Bohr describe the arrangement of particles within an atom?

Chemistry
2 answers:
alexandr1967 [171]3 years ago
4 0

Answer: A

Explanation: Protons and neutrons form the nucleus of the atom, with electrons orbiting it.

ladessa [460]3 years ago
4 0

Answer:

a is the correct choice

Explanation:

this is the right answer on apex, if you look it up anywhere else its also the right answer.

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You are given a solution of hcooh (formic acid) with an approximate concentration of 0.20 m and you will titrate this with a 0.1
balu736 [363]
V(NaOH)*M(NaOH)=V(HCOOH)M(HCOOH)
35.43ml*0.1150m=20.00ml*M(HCOOH)
M(HCOOH)=0.2037m
6 0
3 years ago
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Phenolphthalein meaning
Simora [160]

Answer:

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.

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2 years ago
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Which of the following compound is most soluble in water a)glycerol b) ethyl alcohol c) ethylene glycol d)ethyl chloride
lubasha [3.4K]

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glycerol

Explanation:

it is thick sweet liquid.It is type of alcohol which has 3 OH groups

4 0
2 years ago
1. Why is it necessary to equalize the pressure(i.e, have the water level the same in each tube) before taking a volume reading?
Anna11 [10]

Answer:

If you contact water with a gas at a certain temperature and (partial) pressure, the concentration of the gas in the water will reach an equilibrium ('saturation') according to Henry's law.

Explanation:

This means: if you increase the pressure (e.g. by keeping the vial closed), the CO2 concentration will increase. So it simply depends what concentration you need for your assay: 'CO2-saturated' water at low pressure or 'CO2-saturated' water at high pressure.

3 0
2 years ago
Someone answer these both for me
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Answer:

a b

Explanation:

I think so take it with a grain of salt

4 0
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