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3 years ago

WILL MARK BRAINLY IF GOOD ANSWER :)

Chemistry

1 answer:

Aleks [24]3 years ago

4 0

Answer:

Well one characteristic is electical energy transforms into thermal energy and gases and the state of matter(one of the distinct form i which matter exist)

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Do you think any significant discoveries have been made from errors? Can you<br> describe one?

nasty-shy [4]

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3 years ago

Assuming all the NH3 dissolves and that the volume of the solution remains at 0.450 L , calculate the pH of the resulting soluti

Yanka [14]

Answer:

8.9357.

Explanation:

So, let us dive right into the solution to the above problem;

We have that the volume of the solution = 0.450 L.

The first thing to do is to determine the number of moles by using the formula below:

Pressure × volume = number of moles × gas constant × temperature.

Therefore, making the number of moles the subject of the formula we have;

Number of moles = (pressure × volume)/ has constant × temperature.

Number of moles of NH3=( 735 × 7.50 )/ 62.4 × 295 = 0.2995 moles.

The number of moles of HCl =

0.450 × 0.450 = 0.2025 moles.

Molarity of HCl = 0.2025 moles/ 0.450 L = 0.45M.

The molarity of {OH^-} = (0.2995 moles - 0.2025 moles) /0.450 = 0.097/0.450 = 0.2156 M.

Therefore, kb = 1.8 × 10^-5 = [ 0.450] [OH^-] / [ 0.2156 M] = 0.000008624.

[OH^-] = 0.000008624.

Hence, pOH = 5.0643.

pH = 14 - 5.0643 = 8.9357.

6 0

3 years ago

This is an underground level where the ground becomes saturated with water.

ozzi

Answer: Pumping can affect the level of the water table. In an aquifer, the soil and rock is saturated with water.

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3 years ago

Read 2 more answers

the length of a string is 16cm.Its length becomes 20cm when supporting a weight of 5N.Calculate the length of the string when su

guapka [62]

Answer:

Explanation:

According to hooks law "provide the elastic limit of an elastic material is not exceeded the extension e is directly proportional to the applied force F"

$F= ke$