Answer:
I think A should be the answer because oxygen is the chemical change of carbon.
Explanation:
The reaction of potassium carbonate with hydrochloric acid is as follow -
Potassium Carbonate + Hydrochloric acid → Potassium Chloride + Water + Carbon Dioxide.
In the above reaction , the metal carbonate reacts with an acid to give salt , water and carbon dioxide .
The reaction is an exothermic reaction , as the release of carbon dioxide , is indicated by vigorous effervescence .
Hence ,
The temperature of the reaction increases a lot and hence the reaction is very dangerous .
Therefore , the reaction is very risky to perform.
Answer:
Hello
The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom.
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<em>Source: https://socratic.org/questions/what-does-the-mass-number-tell-us</em>
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Best regards
In which region is the substance in both the solid phase and the liquid phase ?
2
Answer:
C) Carla participated in an artistic activity, while Maurice participated in a scientific activity.
Explanation:
Scientific activities involve making observations, which ultimately leads to the series of steps that aims at solving the observed problem or answering a question that arises from the problem. This is the case of Maurice who is observing and recording information about ants in order to solve a curiosity (about what they feed on).
However, on the other hand, Carla is given a pictorial representation of the ants and what they carry. It is not based on curiosity or to answer a question about the ants but rather for decoration or aesthetic purposes, which is what makes her activity artistic.
