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sveta [45]
3 years ago
12

What is the pH of a solution with [H+]=7.0 * 10^-2

Chemistry
1 answer:
erastova [34]3 years ago
6 0

Answer:

1.15

Explanation: I hope my calculations are correct

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Question 1 (1 point)
EleoNora [17]

Answer:

0.674 mol

Explanation:

Step 1:

Data obtained from the question.

Volume (V) = 4 L

Pressure (P) = 560 kPa

Temperature (T) = 127°C

Number of mole (n) =?

Step 2:

Conversion to appropriate unit.

For pressure:

101.325 KPa = 1 atm

Therefore, 560 kPa = 560/101.325 = 5.53 atm

For temperature:

Temperature (Kelvin) = temperature (celsius) + 273

temperature (celsius) = 127°C

Temperature (Kelvin) = 127°C + 273 = 400K

Step 3:

Determination of the number of mole of Neon.

The number of mole of Neon can be obtained by using the ideal gas equation as follow:

Volume (V) = 4 L

Pressure (P) = 5.53 atm

Temperature (T) = 400K

Gas constant (R) = 0.082atm.L/Kmol

Number of mole (n) =?

PV = nRT

5.53 x 4 = n x 0.082 x 400

Divide both side by 0.082 x 400

n = (5.53 x 4) /(0.082 x 400)

n = 0.674 mol

The number of mole of Neon is 0.674 mol

5 0
3 years ago
It is used to lift water from a well​
Tema [17]

Answer:

When air is admitted into the well, the water recedes from the level of static head to the bottom of the discharge pipe. The displaced column of liquid rises up the discharge pipe. Air bubbles mix with water and this reduces the specific gravity of the column of water sufficiently to lift it to the surface.

Explanation:

7 0
3 years ago
A pizza is an example of a heterogeneous mixture. Explain why it is classified as such?​
My name is Ann [436]

Answer:

Hi!

So, a homogeneous mixture is when the parts that make up the mixture are all mixed in perfectly evenly, so they're only appearing as one uniform substance.

In a heterogeneous mixture, the pieces are not evenly mixed. A pizza has separate parts, like the crust and toppings, so it's a heterogeneous mixture.    

6 0
4 years ago
Read 2 more answers
help, Look at the model below. Explain what is correct and/or incorrect about the model based on scale, proportion, and quantity
stiks02 [169]
One correct thging is that there are the same amount of positive and negative atoms
6 0
3 years ago
What reactants go into the process?<br> I
Eva8 [605]

Answer:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas

Explanation:

7 0
3 years ago
Read 2 more answers
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