C. Ethanol would be product of a fermentation reaction.
Answer:
D is a producer....................
Explanation:
While working in a laboratory it is necessary to be free from any kind of distraction. This is because a distraction while working in a laboratory can lead to serious consequences.
For this it is important to put all your electronic devices like mobile phones, tablets etc in your backpack. Also, you should not carry any kind of eatable, water bottle or anything into the lab.
This is because chemicals do react with food items. Hence, then food does not remain fit for consumption.
Thus, we can conclude that pen or pencil and lab manual personal items are permitted to be at your workstation in the organic laboratory.
Answer:
1.169 mol/L
Explanation:
From the question given, we obtained the following information:
Volume = 0.075 L
Mole of CuCo = 0.0877 moles
Molarity =..?
Molarity is simply defined as the mole of solute per unit litre of the solution. It is represented mathematically as:
Molarity = mole /Volume
With the above formula, we can obtain the molarity of the solution as follow:
Molarity = 0.0877 mol / 0.075 L
Molarity = 1.169 mol/L
Therefore, the molarity of the solution is 1.169 mol/L
Answer:
The answer to the question is
50 % of the original amount of potassium 40 will be left after one half life or 1.25 billion years
Explanation:
To solve the question we note that the half life is the time for half of the quantity of substance that undergoes radioactive decay to disintegrate, thus
we have
half life of potassium 40 K₄₀ = 1.25 billion years
To support the believe tht the rock was formed 1.25 billion years ago we have
After 1.25 billion years we have
= =0.5 of will be left or 50 % of the original amount of potassium 40 will be left