Answer:
![Ca +H_2O \rightarrow + H_2 + CaO](https://tex.z-dn.net/?f=Ca%20%2BH_2O%20%5Crightarrow%20%2B%20H_2%20%2B%20CaO)
Explanation:
Hello,
In this case, considering the given two reactions, when we add them, we obtain:
![Ca + 2HCl +CaCl_2 +H_2O \rightarrow CaCl_2 + H_2 + CaO+2HCl](https://tex.z-dn.net/?f=Ca%20%2B%202HCl%20%2BCaCl_2%20%2BH_2O%20%5Crightarrow%20CaCl_2%20%2B%20H_2%20%2B%20CaO%2B2HCl)
Thus, we can simplify both hydrochloric acid and calcium chloride as they are both sides to obtain:
![Ca +H_2O \rightarrow H_2 + CaO](https://tex.z-dn.net/?f=Ca%20%2BH_2O%20%5Crightarrow%20H_2%20%2B%20CaO)
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Answer:
A
Explanation:
the chloroplast holds the water , nutrients
Thermal conductivity of a substance affects it's ability to heat or to be heated by its surroundings.
This happens because as the temperature increases the kinetic energy which is possessed by the molecules also increases as there is increased collision between the molecules which leads to increase in the thermal conductivity of substance.
<h3>What is thermal conductivity?</h3>
It is defined as the ability of a substance to provide conduction of heat.Higher the thermal conductivity of a substance, more rapidly it will conduct heat and lower values of thermal conductivity depict low rate of conduction of heat.
Thermal conductivity depends on 3 factors namely,temperature, moisture content and density.
Learn more about thermal conductivity,here:
brainly.com/question/10542041
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only metals above hydrogen
Explanation:
On the activity series, only metals above hydrogen will displace it in solution.
The activity series is a list of metals and non-metals that shows how reactive they are.
- Metals high in the series are highly reactive.
- Those that are down below are less reactive.
- As a rule of thumb, any metal higher than another in the series will displace it from the solution containing the lower metal.
- As with hydrogen, only metals that above it will displace it from solutions.
- Reactions of this kind are called single displacement reactions
learn more:
Chemical reactions brainly.com/question/3953793
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