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3 years ago

What is it’s molecular formula for C5H4 if it’s molar mass is 128.17g/mol

Chemistry

1 answer:

Anna [14]3 years ago

7 0

<h2>Answer :</h2><h3><u>QUESTION ①)</u></h3>

✔ C5H4 has a molecular molar mass of :

M(C5H4) = 5 x 12 + 4 x 1
M(C5H4) = 60 + 4
M(C5H4) = 64 g/mol

✔ The molecular mass of C5H4 is therefore 64 g/mol.

But, 128/64 = 2

<h3>This is double the molar mass of C5H4, this molecule has the formula 2C5H4.</h3>

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Will bromine water and magnesium react

bazaltina [42]

No. Magnesium, and Bromine are a chemical compound when put together.
Neither Bromine, nor Magnesium react with any sort of water.

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3 years ago

How many grams are in 2.45E24 formula units of Fp3BZ2? The molar mass of Fp3Bz2. is 97.05<br> g/mol.

dlinn [17]

Answer:

394.99g

Explanation:

The number of moles of a substance can be calculated by dividing the number of atoms of such substance by Avagadro's number (6.02 × 10^23)

n = nA ÷ 6.02 × 10^23

The number of atoms of Fp3BZ2 in this question is 2.45E24 formula units i.e. 2.45 × 10^24

n = 2.45 × 10^24 ÷ 6.02 × 10^23

n = 2.45/6.02 × 10^(24-23)

n = 0.407 × 10¹

n = 4.07moles

Using mole = mass/molar mass

Where; molar mass of Fp3Bz2. is 97.05

g/mol.

mass = molar mass × mole

mass = 97.05 × 4.07

mass = 394.99g

4 0

3 years ago

How to find the final temperature

sveta [45]

Answer:

The final temperature will be "12.37°".

Explanation:

The given values are:

mass,

m = 0.125 kg

Initial temperature,

c = 22.0°C

Time,

Δt = 4.5 min

As we know,

⇒ $q=mc \Delta t$

On putting the estimated values, we get

⇒ $=0.125\times 22.0\times 4.5$

⇒ $=12.37^{\circ}$

8 0

3 years ago

Help me 20 points please someone just get this done

faust18 [17]

Answer:

whut done

Explanation:

I ain't see nothing

6 0

3 years ago

Read 2 more answers

Name the homologous series for this compound and show its structure<br>ch3ch2cc(ch2)2ch3

kotykmax [81]

Answer:

Alkyne

Explanation:

The homologous series for this compound is the Alkyne because of the presence of the triple bond present between the third and fourth carbon atoms as seen in the picture attached.

5 0

3 years ago