josh125
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I need help with these science questions, leave explanations please.


Which acid will undergo 100% dissociation when dissolved in water?

A C25COOH

B CH3COOH

C HCL

D HF


A parallel DC circuit has a total current of 4 amperes and a resistance of .5 Ohms. if the current is doubled, and the resistance is halved, how many times more is the new power compared to the old power?

A 2

B 4

C 1/4

D 1/2

Verified Answer :

SenpaiTrill

Hello there.

Which acid will undergo 100% dissociation when dissolved in water?

Answer: HCL

Option: C

Second Question...not sure.

1.

Answer:

C) HCL

Explanation:

here HCL is 100% dissolved in the water because electronegativity difference between H and CL is sufficiently high and it will easily dissociate the charge into two ions.

So here correct answer will be

C). HCL

2.

Answer:

A) 2

Explanation:

Electrical power is defined in terms of current and resistance as

\(P = i^2R\)

now we will have current is doubled but resistance is halved

so change will be given as

\(P' = (2i)^2(\frac{R}{2})\)

so we have

\(P' = 2P\)

so here power is doubled

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