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vampirchik [111]
3 years ago
6

Which formula can represent an alkyne? *

Chemistry
1 answer:
Ghella [55]3 years ago
5 0

the answer is (3). C3H4

Explanation :

C3H4 is propyne.

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aleksandr82 [10.1K]

Answer:

The expression to calculate the mass of the reactant is m = \frac{1.080kJ}{31.2kJ/g}

Explanation:

<em>The amount of heat released is equal to the amount of heat released per gram of reactant times the mass of the reactant.</em> To keep to coherence between units we need to transform 1,080 J to kJ. We do so with proportions:

1,080J.\frac{1kJ}{10^{3}J } =1.080kJ

Then,

1.080kJ=31.2\frac{kJ}{g} .m\\m = \frac{1.080kJ}{31.2kJ/g}

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3 years ago
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Calculate the maximum wavelength of light that will cause the photoelectric
Drupady [299]

Answer:

Explanation:

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So the minimum energy of photon must be equal to 3.67 X 10⁻¹⁹ J .

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Putting the values in the equation above

6.67  x 10⁻³⁴  x  3 x 10⁸ / λ =  3.67 X 10⁻¹⁹

λ  = 6.67  x 10⁻³⁴  x  3 x 10⁸ /  3.67 X 10⁻¹⁹

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It's because of the sun! Bananas are curved so they can retrieve sunlight.

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