Answer:
Explanation:
Alkanes are saturated hydrocarbons with only single bonds of carbon and hydrogen.
Given the two formulas representing the same compound:
Which statement describes these formulas?
(1) Formulas A and B are both empirical.
(2) Formulas A nd B are both molecular.
(3) Formula A is empirical and Formula B is molecular.
(4) Formula A is molecular and Formula B is empirical.
Correct option is (3).
Empirical formula:-Simplest whole number ratio of various atoms present in a compound.
Molecular formula:-The formula that gives the total number of atoms of each element in each molecule of a substance.
So, (formula B) is the molecular formula, and (Formula A)is the empirical formula.
Hence, the correct option is (3).
To know more about:-
what is the molar mass U
Answer:
Second graph is more reactive.
Explanation:
I just did the lesson myself, chose the first graph, and obviously got it wrong.
Therefore I can tell you with 100% certainty that the correct answer is graph #2 in this case. Hope this helps.
Thelimitations of forensic drug chemistry is (1) they cannot create drugs out ofwht they learned in chemistry although they can create one, (2) theire line of expertiseis limited to the illegal drugs and crime committed acts.
They know how to identify the drugs found at crime scenes.
According to the stoichiometry of the reaction of mercury(II) oxide 1.477 g of oxygen would be produced by heating 20 g of mercury (II) oxide if 18.6 g of mercury is produced.
Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
433.18 g mercury (II) oxide gives 32 g oxygen thus, 20 g of mercury (II) oxide will produce 20×32/433.18= 1.477 g of oxygen.
Thus, 1.477 g of oxygen would be produced by heating 20 g of mercury (II) oxide if 18.6 g of mercury is produced.
Learn more about stoichiometry,here:
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