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Lubov Fominskaja [6]
3 years ago
7

A student walks 2km in 30 minutes. What is the student's average speed in km/h

Chemistry
1 answer:
crimeas [40]3 years ago
4 0

Answer:

4km per hour

Explanation:

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Which term is defined as the change in the direction of light when it goes from one medium into a different medium?
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As volume increases, the temperature will_<br><br> As volume decreases the temperature will _
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As volume decreases, the temperature will decrease.

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6 0
3 years ago
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What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 1.0 mole of V2O5 with 4.0 mole of c
yuradex [85]

Answer:

Theoretical moles of V are 1.6 moles

Explanation:

The theoretical yield of a reaction is defined as the amount of product you would make if all of the limiting reactant was converted into product.

In the reaction:

V2O5(s) + 5Ca(i) → 2V(i) + 5CaO(s)

Based on the reaction, 1 mol of V2O5 needs 5 moles of Ca for a complete reaction. As there are just 4 moles, <em>limiting reactant is Ca.</em> As there are produced 2 moles of V per 5mol of Ca, Theoretical moles of V are:

4 moles of Ca × (2mol V / 5Ca) = <em>1.6 moles of V</em>

<em></em>

I hope it helps!

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