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Rus_ich [418]
2 years ago
11

Hurry help me 30 points

Chemistry
1 answer:
Mandarinka [93]2 years ago
5 0

Answer:

1. B     2. C      3. B or C   4. A   5. A

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Select the correct answer.
rewona [7]
We can use the formula P=IV to calculate the current, where “P” is power (measured in watts), “I” is current (measured in Amps), and “V” is voltage. Simply plug and solve:

P = IV
(3.5 Watts) = I(120 volts)
I = 0.0292 Amps

The current flowing through the bulb is approximately 0.0292 Amps.

Hope this helps!
5 0
3 years ago
HeLlo, HeLp Me PleAsE, Ill MaRk YoU BrAiNlIeSt !
evablogger [386]
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2>

\huge\boxed{Option C}

<h2>_____________________________________</h2><h2>CALORIMETER:</h2>

Calorimeter is device used for the measurement of heat. In a calorimeter we can use the temperature change of water to quantify an amount of heat.  A calorimeter just captures all the energy released (or absorbed) by a reaction in the water. So Option A and B are wrong as calorimeter don't have anything to do with providing the heat or letting the the heat in, as it is the insulated calorimeter too.

<h2>_____________________________________</h2><h2>Energy in the reaction:</h2>

In the formation of any bond there is equal amount of heat required as to break that bond. It means Energy released in the making of bond is equal to the energy required in the breaking of the bond. So Option D is wrong as it says we need more energy in making then breaking.

<h2>_____________________________________</h2><h2>Enthalpy:</h2>

Enthalpy is the total heat content of the system. As we provide energy to the reactants and the product is formed, so The enthalpy(heat content) of product is more than the Enthalpy of the reactant, Thus Option C is correct.

Enthalpy is denoted by H or Q, its formula is,

                                       H = U + PV

Where,

           U is internal energy

           PV is equals to Work done ; P = Pressure, V = Volume

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2>        </h2>
5 0
3 years ago
How do you find a mole (i need an example) i hate chem pls help
galben [10]

Answer:

I'm pretty sure its just the mass of the sample divided by the molar mass

for example if I had like 7g of carbon and wanted to find the moles, I would divide the mass I have (7g) by the molar mass (the atomic mass value on your periodic table, in this case for carbon it would be 14g)

moles = \frac{mass}{molarmass} = \frac{7}{14} = 0.5\ moles

Hope this helped

6 0
2 years ago
Brittany pedaled her bicycle quickly on a level surface. When she quit pedaling and cousted, the bicycle slowed and
san4es73 [151]
A. It was given off due to friction
8 0
2 years ago
HIIII ! any k-pop &amp; K-drama stans!? REMEMBER TO THINK POSITIVE &amp; EAT 3 MEALS A DAY, READ A BOOK (ANY BOOK, SHORT OR LONG
Hatshy [7]

Answer:

You know, i always say no but when i watch one i get addicted so... yeah. thanks for the positive messages

Explanation:

4 0
2 years ago
Read 2 more answers
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