The mass of 6.12 moles of arsenic (As) is calculated to be approximately 459g.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by multiplying the number of moles of a substance by its molar mass. That is;
Mass of Arsenic = no. of moles of As × molar mass of As.
According to this question, 6.12 moles of arsenic was given and its molar mass is 74.92g/mol.
Mass of As = 6.12 mol × 74.92g/mol
Mass of As = 459g
Therefore, the mass of 6.12 moles of arsenic (As) is calculated to be approximately 459g.
Learn more about mass calculations at: brainly.com/question/8101390
By nonmetals, metals, and gases
Answer:
The early atmosphere
Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence. The early atmosphere was probably mostly carbon dioxide, with little or no oxygen.
Explanation:
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With a magnetic unless it has been heated to the Curie point or the Curie temperature then you are out of luck
The water level that will rise is 4 cm^3
calculation
if the density i s 2.7 g/cm^3 this implies that
1cm^3 = 2.7 g
? = 10.8 g
by cross multiplication
(1 cm^3 x 10. 8 g) /2.7 g = 4 CM^3
