How many grams of Cl are in 465g of CaCl2
2 answers:
Answer:
297.4332 grams of chlorine is present in 465 grams of calcium chloride.
Explanation:
Mass of calcium chloride = 465 g
Molar mass of calcium chloride = 111 g/mol
Moles of calcium chloride =
1 mol of calcium chloride has 2 moles of chlorine atoms.
Then 4.1892 moles of calcium chloride has:
of chlorine atoms
Mass of 8.3784 moles of chlorine atom:
8.3784 mol × 35.5 g/mol=297.4332 g
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Answer:
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- <u><em>Because the x-intercet of the graph represents volume zero, which indicates the minimum possible temperature or absolute zero.</em></u>
Explanation:
Charle's Law for ideal gases states that, at constant pressure, the <em>temperature</em> and the <em>volume</em> of a sample of gas are protortional.
That means that the graph of the relationship between Temperature, in Kelivn, and Volume is a line, which passes through the origin.
When you work with Temperature in Celsius, and the temperature is placed on the x-axis, the line is shifted to the left 273.15ºC.
Meaning that the Volume at 273.15ºC is zero.
You cannot reach such low temperatures in an experiment, and also, volume zero is not real.
Nevertheless, you can draw the line of best fit and extend it until the x-axis (corresponding to a theoretical volume equal to zero), and read the corresponding temperature.
Subject to the experimental errors, and the fact that the real gases are not ideal, the temperature that you read on the x-axis is the minimum possible temperature (<em>absolute zero</em>) as the minimum possible volume is zero.