Answer:
Explanation:
Completely turn off equipment like televisions and stereos when you're not using them.
Choose energy-efficient appliances and light bulbs.
Save water.
Lower your shades or close your curtains on hot days, to keep the house cool and reduce the use of electric fans or air-conditioning.
Let clothes dry naturally.
Keep lids on pans when cooking to conserve energy.
Use rechargeable batteries.
Don’t use “throw away” products like paper plates and napkins, or plastic knives, forks and cups.
Send electronic greetings over email, instead of paper cards.
Both disciplines deal with much the same things and there is much overlap, but the basic differences are novelty and scale. It is sometimes said that a chemist wears a lab coat; a chemical engineer wears a hard hat.
Explanation:
pH is equivalent to the negative log of the concentration of
H in molarity, that is:
pH = - log [H]
so the concentration is:
8.05 = - log [H]
[H] = 8.91 x 10^-9 M
the absolute error is:
8.07 = - log [H’]
[H’] = 8.51 x 10^-9 M
absolute error = 8.91 x 10^-9 M - 8.51 x 10^-9 M = 0.4 x
10^-9 M
Therefore:
<span>8.91 x 10^-9 M ± 0.4 x 10^-9 M</span>
The molar mass of CO is 28 g/mol while that of CO2 is 44
g/mol. Let us calculate the total moles present in the container.
total moles = [5g / (28 g/mol)] + [5g / (44 g/mol)]
total moles = 0.2922 mol
Using PV = nRT, we get the pressure:
P = nRT / V
P = (0.2922 mol * 0.0821 L atm/mol K * 323.15 K) / 0.75 L
<span>P = 10.34 atm</span>
