Question

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

Answer 1

Hello there.

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

Answer: HCL

Option: C

Second Question...not sure.

Answer 2

1.

Answer:

C) HCL

Step-by-step 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

Step-by-step 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((R)/(2))`

so we have

`P' = 2P`

so here power is doubled