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2 years ago

14

What is the voltage required to push 0.5 amps of current through a 10 ohm resistor?

1 answer:

nadya68 [22]2 years ago

6 0

V = IR
I = 0.5 amps
R = 10 ohms

So, V = 0.5 • 10 = 5V

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3 years ago

What is the pOH of 0.50 molar H3BO3?

Crazy boy [7]

<u>Answer:</u>

<em>A. 10.25</em>

<em></em>

<u>Explanation:</u>

Pkb =4.77

So pka = 14 - pka = 9.23

$Ka =10^{-pka}$

$H_3 BO_3 (aq)+ H_2 O(l) H_2 BO_3^- (aq)+H_3 O^+ (aq)$

Initial 0.50M 0 0

Change -x +x +x

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(-x is neglected) so we get

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= 14 - 4.76

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Option A - 10.25 is the answer which is close to 9.24

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2 years ago

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Answer:

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