By measuring the temperature of a thing it can be determined whether it is hot or cold. Temperature of the thing can be measured by degree Centigrade or by degree Fahrenheit. This is the instrument that will exactly measure the temperature of the substance and whether it is hot or cold. If the substance has a higher temperature than our body temperature then it would automatically feel hot to us and if the temperature of the substance is lower than our body temperature, then it will definitely feel cold to us. This is our sense telling us whether the substance in question is hot or cold.
Propane is C3H8
So Molar mass propane = 3*12 + 8*1 = 44 <span>
No. of moles of propane = 167/44 = 3.795 moles</span>
From the stoichiometry: <span>
No. of moles of hydrogen = 3.795 moles * (8 moles
hydrogen / 1 mole propane) = 30.36 moles
Using Avogadros number, 1 mole of any substance
contains 6.022 x 10^23 atoms, therefore:
<span>No. of hydrogen atoms = 30.36 * 6.022 x 10^23 =
1.828 x 10^25 atoms</span></span>
The method which is appropriate for separating a mixture of iron and aluminum is A. using a magnet.
This is because aluminum does not have magnetic properties (thus it will be unaffected by the magnet), so it is easy to sort out all iron from the mixture using a magnet.
Answer: 240 cm³
Explanation:
Volume of the box = l × w × h
= (8 cm × 6 cm × 5 cm)
= 240 cm³
