The perfect word to fill the blank is carbohydrates. <span>Digestion breaks down carbohydrates into simpler substances that your body can use for raw materials and energy. Carbohydrates are from the food we eat and are used in the body to produce and supply energy.</span>
Measure reactants precisely.
Stir to help the reaction take place.
Wait patiently until the reaction completes.
Make sure to recover as much copper as possible.
Explanation:
Anything that increases the rate of this reaction will improve the yield of copper production.
The rate of reaction is usually a factor of how the concentration of reactants and products changes with time.
Some of the factors that affects the rate of a reaction are:
- Nature of reactants
- concentration or pressure if gases
- temperature
- presence of catalysts
- degree of mixing
In this reaction:
- to ensure we have the maximum amount of copper produced, measure out the exact/accurate amount of reactants stated
- make sure you stir the reactants to ensure they mix and combine.
- ensure you are not too much in haste. Wait for the reaction to go into completion.
- recover as much copper as possible
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Answer: The correct answer is option B.
Explanation: There are 7 elements in group VIII-A. They are Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo). They are considered as a part of group 18.
Metals are shown in purple color in the periodic table. Metalloids as blue color and Non-metals are shown in green color.
Group VIII-A elements have fully filled orbitals and hence are most stable amongst all the elements in the periodic table. They are considered as least reactive elements and as they are categorized as non-metals. So, they are the least reactive non-metals.
Therefore, the correct option is B.
It is TRUE that mass is indeed the gravitational force that pulls on earth
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