.42; 3.4 divided by 8.1 is about .42
Answer:
2.03
Explanation:
Let's <u>assume we have 1 L of the solution</u>:
- There would be 2.07 ethylene glycol moles.
- The solution would weigh (1000 mL * 1.02 g/mL) = 1020 g.
With that information we can <u>calculate the molality</u>:
- molality = moles of solute / kg of solvent
- molality = 2.07 moles / (1020 ÷ 1000) = 2.03 m
Keep in mind that this is only an estimate, as we used the kg of the solution and not of the solvent.
Answer:
circular motion
Explanation:
It is circular motion because because it is always moving and it is moving in a circular motion as stated. In other words, the energy of a convection current is constantly in motion. Message me if you have any more questions :) I’m always free and I will answer you ASAP! :D toodles ~
Answer:
Explanation:
Fe₂O₃(s) + 3H₂(g) = 2Fe (s) + 3H₂O - 98.8 kJ .
one mole of ferric oxide reacts with 3 mole of hydrogen to give 2 mole of iron and 3 mole of water . 98.8 kJ of heat is absorbed .
When we measure<span> an object's </span>temperature<span>, we </span>measure<span> the average kinetic energy of the particles in the object. The higher the </span>temperature<span>, the faster the molecules of the substance move, on the average.
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