Answer:
The sample is fool's gold
Explanation:
Density is defined as the ratio between mass in grams and volume in mililiters.
A sample of pure gold has a density of 19.3g/mL.
Using Archimedes' principle, the volume of the sample is:
52.2mL - 47.5mL = 4.7mL
As the mass of the sample is 23.5g, the density is:
23.5g / 4.7mL = 5g/mL
The denisty of the sample is very different to density of pure gold, that means:
<em>the sample is fool's gold</em>
Answer:
Answers are given below.
Explanation:
Balanced reaction:
So, 3 molecules of react completely with 1 molecule of and produce 2 molecules of .
Hence, 6 molecules of react completely with or 2 molecules of and produce or 4 molecules of
(A) number of molecules = 4
(B) number of molecules = (6-2) =4
(C) number of molecules = (6-6) = 0
Equation (D) represents best this reaction.
The proceeds of respiration, where living matter, produces the product of CO2 upon exhalation would be contributing to the Carbon cycle.
Water is the only one of these that would work by process of elimination.