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2 years ago

An unsaturated solution is formed when 80 grams of a salt is dissolved in 100 grams of water at 40. This salt could be ?

2 answers:

7 0

A simple way to go about this is that we look at the solubility curve, on the x axis we first look at the temperature and then the corresponding value of solute/100g H2O on the y axis, from the 4 curves above only NaNO3 has a curve that can accommodate 80g of salt at 40 without being Saturated since at 40 degrees it can accommodate 105g of salt to become completely Saturated.

soldier1979 [14.2K]2 years ago

3 0

Answer:

NaNO3

Explanation:

Truss

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Elza [17]

Hey there!:

Sodium cations and phosphate anions .

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3 years ago

Name an insoluble cobalt salt

amm1812

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2 years ago

What is the specific heat of iron, if it requires 1120 J of heat energy to raise the

IRISSAK [1]

Answer:

Specific heat is defined as the amount of heat needed to raise the temperature by one degree celsius. Therefore, in 1 kg there are 100 grams so, 10 grams equal 0.01 Kg. Thus, calculate the specific heat value as follows. Thus, we can conclude that specific heat of the given metal is 0.5 .

Explanation:

4 0

2 years ago

guys please help me WILL MARK BARINLIEST If you have 5.7 x 10^24 molecules of O2 at STP, how many liters of O2 do you have? must

zmey [24]

Answer:

212.8 dm^3 or L

Explanation:

1 mole of any sub=6.02×10^23 molecules

X mole of O2=5.7×10^24 molecules

X mole=5.7×10^24/6.02×10^23

=9.5 mole

1 mole of any gas at stp=22.4 dm^3

Therefore, 9.5 mole of O2 will be 22.4×9.5

=212.8 dm^3

5 0

2 years ago

Given the general chemical equation 3A + 2B → C + 5D,

Irina-Kira [14]

Answer :

(a) The number of moles of D produced can be, 6.67 moles.

(b) The volume of D prepared can be, 24.5 L

Explanation :

The given chemical reaction is:

$3A+2B\rightarrow C+5D$

Part (a) :

From the balanced chemical reaction, we conclude that:

As, 3 moles of A react to give 5 moles of D

So, 4 moles of A react to give $\frac{5}{3}\times 4=6.67$ moles of D

Thus, the number of moles of D produced can be, 6.67 moles.

Part (b) :

As we know that 1 moles of substance occupies 22.4 L volume of gas.

As, $2\times 22.4L$ volume of B gives $5\times 22.4L$ volume of D

As, 9.8 L volume of B gives $\frac{5\times 22.4L}{2\times 22.4L}\times 9.8L=24.5L$ volume of D

Thus, the volume of D prepared can be, 24.5 L

4 0

2 years ago