One day (24 hours), because one rotation of earth on its axis is the position of the countries to the sun shifting, thus resulting in the periods of sun and moon, (the day and the night).
Answer:
ones in magnets r close together while others can be spread apart
Answer: 66.83g
Explanation: (200.59 g/mole = Hg)
0.33 moles = 66.83g
Answer:
26.7 kJ/mol
Explanation:
- Heat required = Heat of vaporization * moles
We're given the Heat of vaporization, so now we need to <u>find the moles of acetone</u>, to do that we'll use the <em>given mass</em>:
- Molar mass of acetone (C₃H₆O) = 12*3 + 6*1 + 16 = 58 g/mol
- 50.0 g acetone ÷ 58 g/mol = 0.862 mol acetone
Now we <u>calculate the heat required</u>:
- Heat required = 31.0 kJ/mol * 0.862 mol
- Heat required = 26.7 kJ/mol
