_______ are very simple plants that do not have true roots, stems, or leaves and can grow to only a few centimeters tall.

1 answer:

4 0

The answer is D. Nonvascular plants. These plants are usually very short and can't grow to be very tall. A good example is moss.

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Calculate the pressure of O2 (in atm) over a sample of NiO at 25.00°C if ΔG o = 212 kJ/mol for the reaction. For this calculatio

Pepsi [2]

Answer : Given data ;
Δ G° = 212 KJ/molTemperature is = 25+273 = 298 KAnd gas constant R = 0.008314 KJ/mol

The reaction is NiO(s) ⇌ Ni(s) + $\frac{1}{2} O_{2 _{(g)}$ We can find out the pressure on oxygen by using the equation of gibb's free energy with remainder quotient which is, ΔG = ΔG° +RT lnQ
when at equilibrium Q = K, here K is equilibrim constant, and ΔG becomes 0;
so we get, 0 = ΔG° + RT ln K
on rearranging we get, ln K = ΔG° / (RT)
ln K = 212 / (0.00831 X 298) = 85.6
Here, now K = = 1.51 X $10^{37}$
When we get K = 1.51 X $10^{37}$

But, K = $(PO_{2})^ \frac{1}{2}$ So, (1.51 X $10^{37}$ ) $^ \frac{1}{2}$ = 3.87 X $10^{18}$
Hence, the pressure of oxygen will be = 3.87 X $10^{18}$ Pa

Now, Pa to atm conversion will be 3.756 X $10^{13}$ atm