2 years ago

HELP ME PLEASE 20 POINTS

1 answer:

6 0

The answer is C. I searched it up and people keep on saying that it's B, which is incorrect. I found another question on Brainly where someone said that C was the answer and the person who asked the question said "Correct, thanks."

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A toaster is plugged into a 132 volt household circuit it draws the amps of current If you use a toaster 2 hours a week how much

Ne4ueva [31]

There is a missing data in the text of the problem: the current drawn is 0.5 A (found on internet)

Solution:
The power used by the toaster is the product between the voltage V and the current I:
$P=VI=(132 V)(0.5 A)=66 W=0.066 kW$

The toaster is used for a time of 2 hours: t=2h, therefore the energy used is equal to
$E=Pt =(0.066 kW)(2 h)=0.132 kWh$

8 0

2 years ago

Calculate kp at 298.15 k for the reactions (a), (b), and (c) using δg°f values.

vivado [14]

(a) 2NO(g) + O₂(g) ⇄2NO₂(g)kp
(b) 2N₂O(g)⇄2NO(g) + N₂(g) kp
(c) N₂(g) + O₂(g)⇄ 2NO(g) kp
Now A is
2NO +O₂⇄2NO₂
ΔG° =ΔG° products - ΔG reactants
=2× 51.3-(256.6)
-70.6kJ/mol.
ΔG° = -RT Inkp
-70.6 = -8.314 ×10⁻³ ˣ 298.15 ˣInkJ
InkJ = 28.48
kp=2.34 ˣ 10¹²

B is
ΔG° = 2× 86.6 - 2 × 104.2 = -35.2
-35.2 = 8.314 × 10⁻³ ˣ 298.15 ˣInkJ
InkJ = 14.2
kp = 1.47ˣ 10⁶

C is
It is also similar
kp = 4.62 ˣ 10⁻³I

6 0

2 years ago

2 Ca + O 2 → 2 CaO What is the product of the reaction

scoray [572]

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