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insens350 [35]
4 years ago
11

Which compound is soluble in water?(1) PbS (3) Na2S(2) BaS (4) Fe2S3

Chemistry
1 answer:
Anuta_ua [19.1K]4 years ago
6 0
Correct Answer: Na2S

Reason: 
The compound sodium sulfide i.e. Na2S is soluble in water. This compound gives strong alkaline aqueous solutions. On the other hand, the remaining three compounds i.e PbS, BaS and Fe2S3 are non-soluble in water. Often these compounds are also referred as sparingly soluble compounds. 
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Hospital patients are administered oxygen from an pressurized
Nataly_w [17]

Answer:

110L

Explanation:

Boyle's Law states that P1×V1=P2×V2

Volume is indirectly proportional to Pressure so P×V is constant

P1=55atm

V1=6L

P2=3atm

V2 is to be found

P1×V1=P2×V2

6×55=3×V2

330=3×V2

Answer: V2=110L

8 0
3 years ago
A ___ such as h20 is a symbol that shows the elements in a compound and the ratio of atoms
KATRIN_1 [288]
I think the answer is 15
4 0
4 years ago
What mass of copper is deposited when a current of 10.0a is passed through a solution of copper(ii) nitrate for 30.6 seconds?
asambeis [7]
Data Given:

Time = t = 30.6 s

Current = I = 10 A

Faradays Constant = F = 96500

Chemical equivalent = e = 63.54/2 = 31.77 g

Amount Deposited = W = ?

Solution:
             According to Faraday's Law,

                                          W  =  I t e / F

Putting Values,
 
                            W  =  (10 A × 30.6 s × 31.77 g) ÷ 96500

                            W  =  0.100 g

Result:
           0.100 g of Cu
²⁺ is deposited.
3 0
4 years ago
Solve the following mole-mass problem. Refer to the periodic table. How much mass does 0.50 mole of copper contain?
andre [41]
It is 31.75g of copper is contained in .50 mole of copper.
7 0
4 years ago
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What energy sources boil the water in geothermal energy
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5 0
3 years ago
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