Answer + Explaination: A beam of light bends when it passes into a new medium because light travels slower in denser medium.
CO+2 H2=CH3OH
2.85 mol Co x (2mol H2/1 mol Co)=5.70 mol just concert to grams
5.70 mol H2 x (2 g H2/1 mol H2) =11.40 grams of H2
Answer:
Explanation:
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In this case, according to the given information about the pH, it is firstly necessary for us to remember that the pH is defined as the potential of the hydrogen ions in the solution and the concentration of those ions represents how many of them are present in the solution; in such a way, it is possible for us use:
Whereas the concentration of hydrogen ions can be calculated as follows:
So we plug in the given pH to obtain:
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Answer:
You find the molar mass of calcium metal, it is listed as 40.1⋅g⋅mol−1 . You should check your copy of the Periodic Table to see if I have got it right. This means that Avogadro's number of calcium atoms, i.e. 6.022×1023 individual calcium atoms have a mass of 40.1⋅g .
Explanation: