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Sindrei [870]
3 years ago
6

Unit 2 Test

Chemistry
1 answer:
wolverine [178]3 years ago
4 0
The answer is community
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PF Lewis Dot Structure<br> Not PF3 not PF4- <br> if you dont know dont answer
Paha777 [63]

Answer:

I think it's pf5or I don't know how to make the answer

Explanation:

,

3 0
3 years ago
Read 2 more answers
An unknown compound contains 75.69% carbon, 8.80% hydrogen, and 15.51% oxygen by mass. A mass spectrometry analysis reveals that
tiny-mole [99]

Answer:

Molecular formula is C₂₆H₃₆O₄

Explanation:

The compound is 75.69 % C, 8.80 % H and 15.51 % O. This data means, that in 100 g of compound we have 75.69 g, 15.51 g and 8.80 g of, C, O and H, respectively. We know the molar mass of the compound, so we can work to solve the moles of each element.

In 100 g of compound we have 75.69 g C, 15.51 g O and 8.80 g H

In 412 g of compound we would have:

(412 . 75.69) / 100 = 311.8 of C

(412 . 15.51) / 100 = 63.9 g of O

(412 . 8.80) / 100 = 36.2 g of H

Now, we can determine the moles of each, that are contained in 1 mol of compound.

312 g / 12 g/mol 26 C

64 g / 16 g/mol = 4 O

36 g / 1 g/mol = 36 H

Molecular formula is C₂₆H₃₆O₄

4 0
4 years ago
If 20.0 grams of Na reacts with 30.0 gtams of Cl2 what mass of NaCl is produfed by the reaction
IgorLugansk [536]

Answer:

mNaCl = mNa + mCl

mNa = 20g

mCl = mCl2/2 = 30/2 = 15g

mNaCl= 20+15 = 35g

6 0
2 years ago
8. What coefficients would balance the following equation:
Orlov [11]

Answer:

A

Explanation:

1N2+3H2→ 2NH3

8 0
3 years ago
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Explain the change in mass that occurs when the following substances are separately heated in open crucibles
aleksandrvk [35]

Answer:

your answer is (a) Copper Metal

Explanation:

7 0
3 years ago
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