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Andrei [34K]
4 years ago
11

whatis the molar concentration of a solution which contains 3.50 g of calcium chloride in 250.0 ml of solution

Chemistry
1 answer:
Black_prince [1.1K]4 years ago
8 0
Hey you still there! 
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Write the acid-base reaction that occurred in the titration of potassium hydrogen phthalate(KHP), KHC8H4O4with sodium hydroxide,
ExtremeBDS [4]

Answer:

KHC₈H₄O₄ + NaOH → KC₈H₄O₄⁻ + Na⁺ + H₂O

Explanation:

Potassium hydrogen phthalate is an acidic salt that is used as a primary standard for acid-base titrations.

In the titration of KHP with NaOH, the salt loses a H⁺ producing water and Na⁺. The reaction is:

KHC₈H₄O₄ + NaOH → KC₈H₄O₄⁻ + Na⁺ + H₂O

I hope it helps!

8 0
3 years ago
In like manner, represent particle diagrams that account for the fact that one volume of hydrogen combines with one volume of ch
ArbitrLikvidat [17]

Answer:

According to Avogadro's law which states that equal volumes of all gases under the same condition of temperature and pressure contain equal number of molecules. Therefore, one molecule of hydrogen reacts with one molecule of chlorine to yield two molecules of hydrogen chloride.

The formula of hydrogen chloride is HCl

The particle diagram is found in the attachment below.

Explanation:

The reaction between hydrogen and chlorine to form hydrogen chloride is represented by the equation below

H₂(g) + Cl₂(g) ---> 2HCl(g)

In the reaction equation above, one mole (or one volume) of diatomic hydrogen gas reacts with one mole (or one volume) of diatomic chlorine gas to form two moles (or two volumes) of hydrogen chloride gas. This is in accordance with Avogadro's law which states that equal volumes of all gases under the same condition of temperature and pressure contain equal number of molecules.

3 0
3 years ago
A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If
inn [45]

Answer:

m_{steel}=54.47gSteel

Explanation:

Hello,

In this case, one considers that the heat lost by the water is gained by the steel rod:

\Delta H_{water}=-\Delta H_{steel}

That in terms of masses, heat capacities and temperatures is:

m_{water}Cp_{water}(T_F-T_{water})=-m_{steel}Cp_{steel}(T_F-T_{steel})

Thus, solving for the mass of the steel rod, we obtain:

m_{steel}=\frac{m_{water}Cp_{water}(T_F-T_{water})}{-Cp_{steel}(T_F-T_{steel})} \\\\m_{steel}=\frac{125mL*\frac{1g}{1mL}*4.18\frac{J}{g^oC} (22.00^oC-21.10^oC)}{-0.452\frac{J}{g^oC}*(2.00^oC-21.10^oC)} \\\\m_{steel}=54.47gSteel

Best regards.

6 0
4 years ago
How many moles of nitrogen monoxide will be generated when 0.83 moles of nitrogen dioxide gas reacts with water?
wel
Answer C) 0.830 moles 

Please disgard what I am saying right now, I can't post since it needs 20 characters atleast. I hope this helped! :3
6 0
4 years ago
Read 2 more answers
What happens when sugar disolves in water?
Elis [28]

First, the sugar dissolves into small sugar molecules, Then fills in the spaces in between the water molecules thus, making Sugar water.

I hope that answered your question and has come to your help.

4 0
4 years ago
Read 2 more answers
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