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scoundrel [369]
3 years ago
5

What parts of the cell are used to connect an electrochemical cell to a circuit?

Chemistry
1 answer:
Sophie [7]3 years ago
5 0
I think it's the Terminals

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Separates substances based on their movement through a special paper
Rama09 [41]
This sounds like paper chromatography.  Let me know in the comments if the answer is something else.
4 0
4 years ago
How will you test for the gas which is liberated when hcl reacts with an active metal ?
DENIUS [597]
When HCl reacts with a metal, hydrogen gas will be evolved. To test this gas, insert a burning splinter into the outlet of gas, the flame will be extinguished with a pop sound. This will confirm the gas is hydrogen.
8 0
3 years ago
You draw back on the piston of a pump and the volume of air in the pump doubles. Which of the following happens?
ohaa [14]

Answer: The correct answer is Option C.

Explanation:

We are given a piston of a pump, which means that there is no loss of the air. and there is a change in pressure and volume but temperature of the system remains constant.

As, the pressure of the system increases, there will be more number of particles. So, the number of collisions per unit area will increase.

\text{Number of collisions}\propto \text{Pressure}

But in the question, volume gets doubled. So, the pressure will be determined by using Boyle's Law:

P\propto \frac{1}{V}

V_2\rightarrow 2V_1

where, V_1\text{ and }V_2 are the initial and final volume respectively.

Putting the change in volume in above equation, we get:

P_2=\frac{1}{2V_1}\\\\P_2=\frac{1}{2}P_1

where, P_1\text{ and }P_2 are the initial and final pressure respectively.

As, the pressure is reduced to half of the initial pressure. So, the number of collisions per unit area will also be reduced to one-half.

Hence, the correct answer is Option C.

5 0
3 years ago
Read 2 more answers
without using laboratory chemical describe simple laboratory experiment to distinguish between calcium hydrogen carbonate and so
zavuch27 [327]

Answer: react each with a dilute strong acid, such as sulfuric acid

the NaHCO3 will leave a clear solution (sodium ) after bubbling

NaHCO3 + H2SO4(aq)>>> CO2 (g) + H20 + Na2SO4 (in solution)

Calclum will leave a NOT clear liquid (Calcium)

Ca(HCO3)2 + H2SO4(aq)>>> CO2 (g) + H20 + CaSO4 (precipate)

8 0
3 years ago
Write the balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous NaI.
Kaylis [27]
If it is just a simple double-replacement reaction, then the balanced equation is simply:

Pb(ClO3)2(aq) + 2 NaI(aq) = PbI2 + 2 Na(ClO3)

However, if this is a precipitation reaction, we must identify which compound will precipitate (is insoluble), either NaClO3 or PbI2

NaClO3 is soluble, PbI2 is not. Only the lead cations and iodine anions will participate in the reaction.

thus, the balanced equation is: Pb^(2+)  +  2I^(-)  ==>  PbI2
4 0
3 years ago
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