3.3 moles of sulfur
Explanation:
To find the number of moles knowing the number of atoms we use Avogadro's number to formulate the following reasoning:
if in 1 mole of sulfur (S) there are 6.022 × 10²³ atoms of sulfur (S)
then in X moles of sulfur (S) there are 2 × 10²⁴ atoms of sulfur (S)
X = (1 × 2 × 10²⁴) / (6.022 × 10²³)
X = 3.3 moles of sulfur
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Avogadro's number
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Citric acid
Ethanoic acid
Methanoic acid
Lactic acid
The statement that best describes the graph of the relationship between the volume and temperature is; "It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume."
The graph of volume against temperature is used to demonstrate Charles law. This law states that, the volume of a given mass of gas is directly proportional to its absolute temperature at constant pressure.
According to this law, the volume increases as temperature increases. This is the meaning of the positive slope of the straight line graph.
Hence, the statement that best describes the graph of the relationship between the volume and temperature of an enclosed gas is "It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume."
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Answer:
KOH molar mass = 39 + 16 + 1 = 56g
To make 1 L of 1M soln needs 56g KOH
To make 500mL 1M needs 56/2 = 28g
To make 500mL 0.2M needs 28 x 0.2gn: