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jeka94
3 years ago
15

What mass of KCl is required to make a 0.680 m solution with 5.00 kg of water? a) 199 g b) 548 g c) 253 g d) 373 g

Chemistry
1 answer:
sladkih [1.3K]3 years ago
5 0

Answer:

it is A.

Explanation:

A.) 199g

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pplication)Using multiple models simultaneously: This FNT refers to a processinvolving three moles of a diatomic gas (which beha
Fiesta28 [93]

Complete Question

Questions Diagram is attached below

Answer:

*  W=1142.86Joule

*  Q=997.7J

*  H=2140.5J

Explanation:

From the question we are told that:

Temperature T=337K

Pressure P=(60-55)Pa*10^5

VolumeV=(1.6-1.4)m^3*10^{-3}

Generally the equation for gas Constant is mathematically given by

\frac{P_2}{P_1}=\frac{V_1}{V_2}^n

 \frac{55*10^5}{60*10^5}=\frac{1.4*10^{-3}}{1.6*10^{-3}}^n

 n=0.65

Therefore

Work-done

 W=\int{pdv}

 W=\frac{55*10^5*1.6*10^{-3}*60*10^5*1.4*10^{-3}}{1-0.65}

 W=1142.86Joule

Generally the equation for internal energy is mathematically given by

 Q=mC_vdT\\\\Q=\frac{3*1*3.314*16}{1.4-1}

 Q=997.7J

Therefore

 H=Q+W

 H=997.7J-11.42.9

 H=2140.5J

5 0
2 years ago
A mixture of helium, nitrogen and oxygen has a total pressure of 821 mmHg. The partial pressure of helium is 105 mmHg, and the p
skad [1K]

Answer:

Total partial pressure, Pt = 821 mm Hg

Partial pressure of Helium, P1 = 105 mm Hg

Partial pressure of Nitrogen, P2 = 312 mm Hg

Partial pressure of Oxygen, P3 = ? mm Hg

According to Dalton's law of Partial pressures,

Pt = P1 + P2 + P3

So, <u>P3 = 404 mm Hg</u>

4 0
2 years ago
The measure of the number of atoms in one element that will combine with am atom of element is?
raketka [301]
<span>These atoms are known as valence atoms.</span>
4 0
3 years ago
Read 2 more answers
What is a balanced equation for the neutralization of these two compounds? <br><br> HCl <br> Ca(OH)2
loris [4]

In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:


2HCl + Ca(OH)2 = CaCl2 + 2H2O

8 0
3 years ago
The C-O stretching frequency of carbon monoxide changes when the molecule coordinates to a metal centre. Does it increase or dec
andrey2020 [161]

Answer:

decrease

Explanation

During the co ordinate bond between the Carbonyl and The metal ,

The Carbonyl donates the sigma electrons and through the process of back bonding , it accepts the electrons in its pi star orbitals i.e. , the antibonding orbitals , thereby reduces the bond order and which in turns reduces the bond strength and , there fore ,

The IR stretching frequency for CO reduces .

3 0
3 years ago
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