The distance that light travels in one year is approximately 9,460,000,000,000 kilometers. In scientific notation, this would be
2 answers:
Explanation:
A mathematical expression that is used for the representation of a decimal number between 1 to 10 raised to the power of 10. As a result, a scientific notation will be written using less digits.
For example, 9,460,000,000,000 kilometers can be written is scientific notation as follows.
km
So, when we remove the decimal then we get the number which is equal to 9,460,000,000,000.
Therefore, we can conclude that the scientific notation of 9,460,000,000,000 km is km.
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Answer : Both solutions contain molecules.
Explanation : The number of molecules of 0.5 M of sucrose is equal to the number of molecules in 0.5 M of glucose. Both solutions contain molecules.
Avogadro's Number is =
which represents particles per mole and particles may be typically molecules, atoms, ions, electrons, etc.
Here, only molarity values are given; where molarity is a measurement of concentration in terms of moles of the solute per liter of solvent.
Since each substance has the same concentration, 0.5 M, each will have the same number of molecules present per liter of solution.
Addition of molar mass for individual substance is not needed. As if both are considered in 1 Liter they would have same moles which is 0.5.
We can calculate the number of molecules for each;
Number of molecules = ;
∴ Number of molecules = which will be =
Thus, these solutions compare to each other in that they have not only the same concentration, but they will have the same number of solvated sugar molecules. But the mass of glucose dissolved will be less than the mass of sucrose.