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saveliy_v [14]
2 years ago
8

system of equations You and your friend are making 30 liters of sodium water. You have liters of 10% sodium and your friend has

liters of 22% sodium. How many of your liters and how many of your friend's liters should you mix to make 30 liters of 15% sodium
Chemistry
1 answer:
vovikov84 [41]2 years ago
7 0

Answer:

X liters of 10% + (30 - x) liters of 22% = 30...

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Answer:

Explanation:

So, the formula for the compound should be:

XCl_{6}

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M_{Cl}=35.45g/mol\\

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3 years ago
When matter is a gass, a lot of the time it is ____?
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Please help quick
Rama09 [41]

Answer:

c = 0.898 J/g.°C

Explanation:

1) Given data:

Mass of water = 23.0 g

Initial temperature = 25.4°C

Final temperature = 42.8° C

Heat absorbed = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Specific heat capacity of water is 4.18 J/g°C

ΔT = 42.8°C - 25.4°C

ΔT = 17.4°C

Q = 23.0 g ×  × 4.18 J/g°C × 17.4°C

Q = 1672.84 j

2) Given data:

Mass of metal = 120.7 g

Initial temperature = 90.5°C

Final temperature = 25.7 ° C

Heat released = 7020 J

Specific heat capacity of metal = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 25.7°C - 90.5°C

ΔT = -64.8°C

7020 J = 120.7 g ×  c ×  -64.8°C

7020 J = -7821.36 g.°C ×  c

c = 7020 J / -7821.36 g.°C

c = 0.898 J/g.°C

Negative sign shows heat is released.

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