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Paul [167]
3 years ago
13

How do we measure the acidity of rain?

Chemistry
2 answers:
Leona [35]3 years ago
6 0
Just use litmus paper or a pH indicator
bija089 [108]3 years ago
3 0
Through pH scale. it measures the acidity of a substance, pH is measured with a litmus paper, if the paper turns red then it is acidic.
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as the elements period 3 are considered in order of increasing atomic number, the number of principal energy levels in each succ
Diano4ka-milaya [45]

Answer:

stay the same.

Explanation:  Period 3 consists of the full 1s, 2s, and 2p electron orbitals, plus the 3s and 3p valence orbitals, which are filled with a total of 8 more electrons as we move from left (Na) to the far right (Ar):

Na:  1s2 2s2 2p6 3s1

Ar:    s2 2s2 2p6 3s2 3p6

As we move from left to right, and ignoring the already-filled 1s, 2s, and 2p orbitals, the period three starting and ending elements have the following:

Na: 3s1

Ar: 3s2, 3p6

All the new electrons electrons filled the third energy level (3s and 3p).  So the energy level does not change, just the orbitals.

5 0
3 years ago
Prepare a 0.50 L of a 1.0 M solution of potassium sulfate. Determine the amount of potassium sulfate needed in correct significa
Lera25 [3.4K]

Answer:

B) 87g

Explanation:

Usatestprep said it

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An ideal gas sample is confined to 3.0 L and kept at 27 °C. If the temperature is raised to 77 °C and the initial pressure was 1
Nadusha1986 [10]

The gas is confined in 3.0 L container ( rigid container) ⇒ the volume remains constant when the temperature is increased from from 27oC to 77oC and therefore V1=V2 .

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6 0
2 years ago
1 point
levacccp [35]

Answer:

A pure substance has a definite chemical composition

4 0
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Which of these objects in the solar system have impact craters. <br> The Moon<br> Earth<br> Mars
Vaselesa [24]

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Explanation: hope this helps.

3 0
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