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>
Number 1 is 2-2-2-1, subscripts and coefficients will determine the number of molecules, they'll need to balance on left and right sides of the arrow. Check Tyler Dewitt on YouTube for balancing chemical equations
Oxygen can be separated by heating certain oxygen compounds by electrolysis or by liquefying air.
B
1 mile=4 poles
if 5 poles pass by than she´s going around 1.25 miles per min
rounded up = 1.3 mil/min