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PSYCHO15rus [73]
3 years ago
11

The production of a gas when acid is added to a sample of chalk is an indication of what type of reaction

Chemistry
2 answers:
ahrayia [7]3 years ago
5 0
It is a result of a chemical reaction.
alexgriva [62]3 years ago
4 0

Chemical                                  


I had the same question

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015
kozerog [31]

Answer:

Average of measurements = 20.97 cm

Explanation:

Given data:

Three measurements of pete's = 20.9 cm, 21.0 cm, 21.0 cm.

Average value of measurements = ?

Formula:

Average of measurements = sum of all measurements / Total number of measurements

Solution:

Average of measurements =  20.9 cm + 21.0 cm + 21.0 cm. / 3

Average of measurements = 62.9 cm / 3

Average of measurements = 20.97 cm

7 0
3 years ago
A sample of air is slowly passed through aqueous Sodium hydroxide and then over heater copper. Which gases are removed by this p
bagirrra123 [75]

Carbon dioxide and oxygen are removed from the air.

Explanation:

When air is passed through aqueous sodium hydroxide solution the carbon dioxide is removed from the air.

First the carbon dioxide will dissolve and react with water to form carbonic acid ( H₂CO₃) :

CO₂ + H₂O → H₂CO₃

The the carbonic acid will react with sodium hydroxide to form sodium carbonate (Na₂CO₃):

H₂CO₃ + 2 NaOH → Na₂CO₃ + 2 H₂O

After this by passing the air over heated cooper the oxygen is removed.

2 Cu + O₂ → 2 CuO

Learn more about:

neutralization reaction

brainly.com/question/2632201

#learnwithBrainly

7 0
3 years ago
A radiometer is shown below. When infrared light passes through the radiometer
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We can’t see the pic
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Which part of a tree always grows down because of gravity?
Vlad1618 [11]
The branches but also the leaves do give most light which grows both ways so
3 0
3 years ago
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Wave y and wave z are two types of electromagnetic waves traveling through a vacuum suppose the frequency of wave y is about thr
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Frequency and energy have a direct relationshipWave Y transfers about three times the amount of energy as wave Z because energy and frequency have a direct relationship
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