Answer:
c) 0.145
Explanation:
By Raoult's Law, the pressure of a solution is equal to the molar fraction of the solvent multiplied by its vapor pressure. The solvent here is ether, so
342 = x*400
x = 342/400
x = 0.855
The solution has only ether and benzoic acid, so the molar fraction of benzoic acid will be
1 - 0.855 = 0.145
The answer is b. electric current.
Electric current is the flow of charges, and the electrons are negative charded particles that constitute matter.
The flow of electrons happens through conductor materials (wires). As the question says the movement of the electrons (flow) is induced by an electric field.
Answer:
No component is perfect. All have tolerances that can vary. If you construct a simple circuit where a 10 volt power supply feeds a 10 ohm resistor, you would expect to measure a current of one ampere. BUT - the wiring has some resistance too. This adds perhaps 0.1 ohms to the circuit. The resistor has a +-5% tolerance. If it is 5% high, it may measure 10.5 ohms. That's a total circuit resistance of 10.6 ohms. The power supply may have a tolerance of +-1%. Suppose it's 1% low. That's an output of 9.9 volts in real life. So you have 9.9 volts dropped across 10.6 ohms. you will measure closer to 0.934 amps instead of 1.000 amps. To make matters worse, most electronic components have a temperature coefficient, that is, their values change with different temperatures. You may get a completely different reading tomorrow if the temperature is different! Finally, with current measurements in particular, you are inserting the ammeter in series with the circuit under test. Ammeters have some inherent resistance too, so by putting the ammeter in the circuit, you are changing the very current you are trying to measure (a little)! Oh yeah, the ammeter has a tolerance too. Its reading may be off a little even if everything else is perfect. Sometimes you have to wonder how we get a decent reading at all. Fortunately the errors are usually fairly small, and not all tolerances are off in the same direction or off the maximum amount. They tend to cancel each other out somewhat. BUT - in rare circumstances everything CAN happen like I said, and the error can be huge.
Explanation:
I believe it would be
A. True
You can use this link to study:https://quizlet.com/83085591/chemistry-9-weeks-test-flash-cards/
This should help you understand more.
<span>The zigzag line in the periodic table separates the metals from the nonmetals.</span>
