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Nat2105 [25]
3 years ago
7

PLEASE answer

Chemistry
1 answer:
muminat3 years ago
6 0
176.5847
using gay-lussac’s law
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Fuel cells have been developed that can generate a large amount of energy. For example, a hydrogen fuel cell works by combining
solmaris [256]
Use the equation P=VI.
P=power (in this case 10 kilowatts or 10000 watts)
V=voltage (in this case unknown)
I=current (in this case 15.8 amps)
rewrite the equation to be V=P/I
V=(10000 watts)/(15.8 amps)
V=632.9 volts
(I think the equation requires the units for power to be watts so you need to convert kilowatts into watts)
6 0
3 years ago
How many joules of energy do you get from eating an apple?
iris [78.8K]
I know I'm days late but why not answer your question anyway, I don't know how many calories your apple has but I believe it would be 95 calories is a normal amount for an apple. So the correct answer to your question is <span>397480 J Hope I'm correct please let me know and mark me Brainliest.
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8 0
3 years ago
compute the mass-specific enthalpy change associated with Nz that is undergoing a change in state from 400 k to 800 k
Kitty [74]

Answer:

The correct answer is "430 kJ/kg". A further explanation is given below.

Explanation:

The given values are:

T₁ = 400 k

T₂ = 800 k

The average temperature will be:

= \frac{T_1+T_2}{2}

= \frac{400+800}{2}

= 600 \ k

From table,

At 600 k the C p will be = 1.075

Now,

⇒ The specific enthalpy = Cp(T_2-T_1)

⇒                                \Delta h=1.075 (800-700)

⇒                                      =430 \ kJ/kg

8 0
3 years ago
Which has triple Bond C2 H4 C3 H6 and C3 H4​
expeople1 [14]

Answer:  C3H4 (Propayne) have a triple bond.

Explanation:

The hydrocarbons which having triple bond are called alkyne. The general formula of alkyne is CnH2n-2. Here, n is number of carbon atoms.

In alkyne, the number of hydrogen atom is 2 less than double the number of carbon atoms.

Thus, the compound C3H4 (Propyne) have a triple bond.

7 0
3 years ago
Please help don’t understand this I attached the question
Rasek [7]

Answer:

58.32

Explanation:

The mass number is one mole and for Mg it is 24.306 for O it is 15.999 and for H it is 1.008. because O and H have 2, you multiply them by 2 and add all the numbers and it equals 58.32

8 0
1 year ago
Read 2 more answers
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