Answer:
B) rate of growth I'd say
Explanation:
it sounds better I don't think anyone would use height of plants if they want to sound professional
Answer:
No, however I thank you for the points <3
Explanation:
Answer:
<em><u>When ΔS > 0 and ΔH < 0, the process is always spontaneous as written. When ΔS < 0 and ΔH > 0, the process is never spontaneous, but the reverse process is always spontaneous. When ΔS > 0 and ΔH > 0, the process will be spontaneous at </u></em>
Explanation:
What are the best conditions to lead towards a spontaneous reaction? <em><u>high negative enthalpy, high temp, high positive entropy. Your enthalpy is high and negative but your entropy is also negative.</u></em>
6 molls
As a result, if two moles of dinitrogen gas are specified, six moles of dihydrogen gas are needed.
<span>1.91 mol H2
Let's rewrite that equation into a balanced equation. Let's start with the unbalanced version:
Na + HF ==> NaF + H2
We have equal amounts of Na and F on both sides, but twice as much H on the right. So let's double the Na, HF, and NaF coefficients.
2Na + 2HF ==> 2NaF + H2
And we now have equal quantities of all elements on both sides, so our equation is balanced.
Now looking at the balanced equation, 2 moles of sodium should produce 1 mole of hydrogen gas. So we should have 4.50/2 = 2.25 moles of hydrogen gas. But we only have an 85% yield, so we multiply the expected yield by the percentage, giving 2.25 mol * 0.85 = 1.9125 mol. Rounding to 3 significant figures gives us 1.91 mol which matches "1.91 mol H2"</span>
