3 years ago

How many calories are required to boil 75 grams of water not in sig figs

1 answer:

3 0

Well, each ml of water requires one calorie to go up 1 degree Celsius, so this liter of water takes 1000 calories to go up 1 degree Celsius. (There are 1000 ml, each of which needs to have its temperature raised.)

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Answer:

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b) 270 k

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a) 104 + 273 = 377 k

b) -3 + 273 = 270 k

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The wavelength of the violet light emitted from a hydrogen atom is 410.1 nm. This light is a result of electronic transitions be

VashaNatasha [74]

Answer:

e. 4.847 x 10-19 J

Explanation:

From the given information:

The equation connecting the photon energy and the wavelength is:

$E_{photon } = \dfrac {hc}{\lambda}$

where;

$planck's \ constant \ (h)$ = 6.626 * 10 ^{-34} J.s

$velocity \ of \ light \ (c)$ = 3.00 * 10^8 m/s

wavelength $\lambda = 410.1 \ nm \times \dfrac{10^{-9} \ m}{1 \ nm}$

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To determine the photon energy of violet light

$E_{photon } = \dfrac {(6.626 \times 10^{-34} J/s ) \times (3.00 \times 10^8 \ m/s) }{4.101 \times 10^{-7} \ m}$

= 4.847 × 10⁻¹⁹ J

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3 years ago