physical properties cant be chemically changed. Boiling point, freezing point, ext are all examples.
<u>Answer:</u> The mass of water produced is 507.6 g
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
Given mass of glucose = 846 g
Molar mass of glucose = 180 g/mol
Plugging values in equation 1:
The given chemical equation follows:
By the stoichiometry of the reaction:
If 1 mole of glucose produces 6 moles of water
So, 4.7 moles of glucose will produce = of water
Molar mass of water = 18 g/mol
Plugging values in equation 1:
Hence, the mass of water produced is 507.6 g
Answer:
Vestigial Structures
Explanation:
Structures that were needed for an organism's ancestor, but no longer required for survival for the current organism. We needed our wisdom teeth and appendix in order to eat tougher foods, but now we do not need those to survive. But, we still have them.
Answer:
0.000025mol/L
Explanation:
pH = -log[H3O+]
Here, we know that pH = 4.6 while the concentration of [H30+] is what we are to find. This can be obtained as follows:
4.6 = -log[H30+]
[H3O+] = -Antilog(4.6)
= 0.000025mol/L
The density of the cube in grams per cubic centimeter = D = 2 gram / cm³
Explanation:
The Volume Of the Cube is V = a³
Its is given that the cube has sides measuring 5 cm each side.
V = ( 5 )³
= 5cm 5cm 5cm
V = 125 cm³
The Density Formula, Density= Mass / Volume.
Given that this cube has a mass of 250 grams.
to calculate density
D = ρ = m / V
= 250 / 125
= 2
D = 2 gram / cm³