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hram777 [196]
3 years ago
8

Which has a higher boiling point? please help!​

Chemistry
1 answer:
san4es73 [151]3 years ago
4 0
First choice: PhH4 has a lower boiling point
Second: SiF4 higher
Third: CBr4 higher

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When warmed with an ammonium salt ammonia gas is given off
Elanso [62]

The ways in which ammonia can be identified is mentioned in below pointers.

<h3>What is Ammonia ?</h3>

Ammonia is a compound of nitrogen and hydrogen with the formula NH3.

A stable binary hydride, and the simplest pnictogen hydride.

Ammonia is a colourless gas with a distinct pungent smell.

Biologically, it is a common nitrogenous waste,

Three ways in which ammonia gas can be identified is:

  • It has a sharp characteristic odor.

  • When a glass rod dipped in HCl is brought in contact with the gas white color fumes of ammonium chloride are formed.

  • It turns moist red litmus blue, moist turmeric paper brown, and phenolphthalein solution pink.

To know more about Ammonia

brainly.com/question/17198636

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4 0
2 years ago
Identify four properties of a substance that will never change
Aleonysh [2.5K]
Density
Colour
Conductivity
Malleability
and Luster
7 0
3 years ago
Read 2 more answers
What charge will an ion of phosphorus form?
Fed [463]

Answer:

A charge of -3

Explanation:

If you look on a periodic table you will find that phosphorus is 3 elements away from the nearest noble gas argon. This means that phosphorus would prefer a charge of -3!

8 0
3 years ago
Read 2 more answers
A 5.2 molal aqueous solution of methyl alcohol, CH3OH, is supplied. What is the mole fraction of methyl alcohol in the solution?
telo118 [61]

Answer:

0.086

Explanation:

A 5.2 molal aqueous solution of methyl alcohol indicates that 5.2 moles of methyl alcohol are present in 1 kilogram (or 1000 g) of water. Water has a molecular weight of 18 g/mol.

(100g)/18g/mol=55.56 mol

5.2 mol/(5.2mol+55.56 mol)=0.086

4 0
1 year ago
Substance A has the following properties.
ella [17]

It will take 1.11 min to heat the sample to its melting point.

Melting point = - 20°C

Boiling point = 85°C

∆H of fusion = 180 J/g

∆H of vap = 500 J/g

C(solid) = 1.0 J/g °C

C(liquid) = 2.5 J/g °C

C(gas) = 0.5 J/g °C

Mass of sample = 25 g

Initial temperature = - 40°C

Final temperature = 100°C

Rate of heating = 450 J/min

Specific heat capacity formula:- q = m ×C×∆T

Here, q = heat energy

        m = mass

        C = specific heat

      ∆T = temperature change

Melting point = - 20°C

C(solid) = 1.0 J/g °C

∆T = final temperature - initial temperature = -20 - (-40) = 20

Put these value in  Specific heat capacity formula

q = m ×C×∆T

q = 25×1.0×20

   =500J

The Rate of heating = 450 J/min

i.e. 450J = 1min

so, 500J = 1.11min

1.11 minutes does it take to heat the sample to its melting point.

The specific heat capacity is defined as the amount of heat absorbed in line with unit mass of the material whilst its temperature increases 1 °C.

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3 0
1 year ago
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