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Gwar [14]
3 years ago
15

Picture of the question is below, if answered correctly, I will reward with brainliest.

Chemistry
1 answer:
BARSIC [14]3 years ago
6 0

Answer:

1. Number 3

2. Number 1

3. Number 5

4. Number 4

5. Number 2

I think, this is the order.

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The mass of a quantity of Cl gas (70,906 g/mol) that occupies<br> 50.0L at 27.0°C and 721 mm Hg is:
inessss [21]

We need no of moles

Apply ideal gas equation

  • PV=nRT
  • n=PV/RT
  • n=721(50)/8.314(300)
  • n=14.4mol

So

mass

  • 70.906(14.4)
  • 1021g
4 0
2 years ago
What is NaCI and what is KBr?
Rufina [12.5K]
NaCl= sodium chloride or salt
KBr= potassium bromide
3 0
3 years ago
A 0.2722 g sample of a pure carbonate, X n CO 3 ( s ) , was dissolved in 50.0 mL of 0.1200 M HCl ( aq ) . The excess HCl ( aq )
Alex73 [517]

Answer:

0.00369 moles of HCl react with carbonate.

Explanation:

Number of moles of HCl present initially = \frac{0.1200}{1000}\times 50.0 moles = 0.00600 moles

Neutralization reaction (back titration): NaOH+HCl\rightarrow NaCl+H_{2}O

According to above equation, 1 mol of NaOH reacts with 1 mol of 1 mol of HCl.

So, excess number of moles of HCl present = number of NaOH added for back titration = \frac{0.0980}{1000}\times 23.60 moles = 0.00231 moles

So, mole of HCl reacts with carbonate = (Number of moles of HCl present initially) - (excess number of moles of HCl present) = (0.00600 - 0.00231) moles = 0.00369 moles

Hence, 0.00369 moles of HCl react with carbonate.

3 0
3 years ago
What is the charge on an atom with 10 protons and 8 electrons?
maks197457 [2]
Hi,
The answer is +2, since there are 10 positive charges (protons) and 8 negative charges (electrons), so 10(+1) + 8(-1)= +10 -8= +2.

If my answer was not clear enough or you’d like further explanation please let me know.
Hope this helps!
7 0
3 years ago
Read 2 more answers
Which elements atoms have the greatest attraction for electrons in a chemical bond
svlad2 [7]

Answer:

Fluorine

Explanation:

4 0
3 years ago
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