I know for sure that it is francium
Water has this unusual
behavior when cooled at <span>4 degrees Celsius; it expands slightly until
it reaches the freezing point and continue to expand by approximately 9%. This characteristic has something to do with the structure of the water molecule where there is a
strong tendency to form a network of hydrogen bonds and each hydrogen atom is
in a line between two oxygen atoms. These bonds force the crystalline
structure to be very open into hexagonal form and expand dramatically.
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I have no idea look it up
Assuming that the combustion formula is
CH4 + 2O2 --> 2H2O + CO2<span>,
That means for every 1 molecule of methane(CH4) there will be one molecule of carbon dioxide(</span>CO2) produced. Methane molecular weight 16, carbon dioxide molecular weight is 44. Then the percent yield should be:
1 * (0.374/ 16) /(0.983/44)= 0.374*44/ 0.983 * 16= 104.6%
You sure the number is correct? Percent yield should not exceed 100%
