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mina [271]
2 years ago
5

Which one of the following salts, when dissolved in water, produces the solution with a ph closest to 7.00? 110) a) kh co3 b) cs

cl c) cao d) nh4l
Physics
1 answer:
s344n2d4d5 [400]2 years ago
4 0

CsCl, when dissolved in water, produces the solution with a ph closest to 7.00.

<h3>What is pH?</h3>

In chemistry, pH, historically denoting "potential of hydrogen" (or "power of hydrogen"), is a scale used to specify the acidity or basicity of an aqueous solution.

Acidic solutions (solutions with higher concentrations of H+ ions) are measured to have lower pH values than basic or alkaline solutions.

The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution.

Solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic.

Solutions with a pH of 7 at this temperature are neutral (e.g. pure water).

The neutral value of the pH depends on the temperature – being lower than 7 if the temperature increases above 25 °C.

The pH value can be less than 0 for very concentrated strong acids, or greater than 14 for very concentrated strong bases.

To learn more about pH: brainly.com/question/491373

#SPJ4

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Calculate the amount of heat given off by 640 g of water cooling from 76 °C to 28° C. Specific heat of water = 4.816 J/g C. Show
marishachu [46]

Answer:

47947.52 J.

Explanation:

From the question,

Amount of heat given of (Q) = mc(t₁–t₂).................... Equation 1

Where m = mass of water, c = specific heat capacity of water, t₁ = initial temperature, t₂ = final temperature.

Given, m = 640 g = 640 g, c = 4.816 J/g°C, t₁ = 76 °C, t₂ = 28 °c.

Substitute these values into equation 1 above

Q = 640×4.816(48)

Q = 147947.52 J.

Hence the amount of heat given off is 47947.52 J.

5 0
3 years ago
Write any two difference between CGS and MKS system of measurement ?​
Tresset [83]

Answer:

MKS stands for Meter, Kilogram and second. In this system of unit mass is given in Kilogram, length in meter and time in second. ... CGS system stands for Centimeter- Gram- Second system. In CGS system, length is measured in centimeters mass is measured in grams and time is in seconds.

7 0
3 years ago
The final stages of a star's life depend on its mas. true or false?​
Diano4ka-milaya [45]

Answer:

TRUE

Explanation:

Low mass stars last lots longer.

5 0
3 years ago
If a trapeze artist rotates once each second while sailing through the air, and contracts to reduce her rotational inertia to on
finlep [7]

Answer:

There are finally 4 rotations per second.

Explanation:

If a trapeze artist rotates once each second while sailing through the air, and contracts to reduce her rotational inertia to one fourth of what it was. We need to find the final angular velocity. It is a case of conservation of angular momentum such that :

I_1\omega_1=I_2\omega_2

Let I_1=I , I_2=\dfrac{I}{4} and \omega_1=1

So,

\omega_2=\dfrac{I_1\omega_1}{I_2}

\omega_2=\dfrac{I\times 1}{(I/4)}

\omega_2=4\ rev/sec

So, there are finally 4 rotations per second. Hence, this is the required solution.

4 0
3 years ago
A train can travel at 200 mph. How long will it take you to get to Chicago if it is 1800 miles away?
labwork [276]
The answer is d, 9 hours
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3 years ago
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