To find density, you just divide the mass by the volume (density is the measurement of the amount of mass in a certain volume):
We need to know different types of van der Waal's forces.
There are three different van der Waal's forces.
van der Waal's force is driven by induced electrical interactions between two or more atoms or molecules. Though it is very weal in nature, this force is ultimately responsible for liquefaction and solidification of gases.
van der Waal's forces are non-directional. The strength of this force increases as the size of the units linked increases.
There are three types of van der Waal's interactions. They are- (i) Ion-dipole interaction, (ii) dipole-dipole interaction and (iii) hydrogen bond.
Ion dipole interaction is weakest among these three, dipole-dipole interactions are medium and hydrogen bonds are strong interactions.
Answer:
Explanation:
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In this case, according to the given information for this chemical reaction, it is possible for us to set up the following general rate law and the ratio of the initial and the final (doubled concentration) condition:
Next, we plug in the given concentrations of A, 0.2M and 0.4 M, the rates, 1.0 M/s and 4.0 M/s and cancel out the rate constants as they are the same, in order to obtain the following:
Which means this reaction is second-order with respect to A. Finally, we calculate the rate constant by using n, [A] and r, to obtain:
Thus, the rate law turns out to be:
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Answer:
2023.04 g
Explanation:
Magnetite reacts with hydrogen to produce Iron metal and steam. Steam instead of water is produced as the reaction occurs at temperatures above the boiling point of water.
Fe₃O₄ + 4 H₂ → 3 Fe +4 H₂O
From the equation, 1 mole of Fe₃O₄ reacts with 4 moles of H₂.
69.76 grams of H₂ has the following number of moles.
Number of moles= mass/RAM
=69.76/2
=34.88 moles.
The reaction ratio of Fe₃O₄ to H₂ is 1:4
Thus number of moles of magnetite= (1×34.88)/4
=8.72 moles.
Mass= moles × molecular weight
=8.72 moles × (56×3+16×4)
=2023.04 grams