3 years ago

9.87 x 10^-5km - 8.76 x 10^-6km

Chemistry

2 answers:

nignag [31]3 years ago

6 0

Answer:

0.00008994x kilometers

Explanation:

Nutka1998 [239]3 years ago

6 0

0.00008994 kilograms

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What is the energy in joules of one photon of microwaveradiation with a wavelength 0.122m?

pentagon [3]

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Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

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Putting values in above equation, we get:

$E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{0.122m}\\\\E=162.93\times 10^{-26}J$

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Likurg_2 [28]

Answer : The mass of nitric acid is, 214.234 grams.

Solution : Given,

Moles of nitric acid = 3.4 moles

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Formula used :

$\text{Mass of }HNO_3=\text{Moles of }HNO_3\times \text{Molar mass of }HNO_3$

Now put all the given values in this formula, we get the mass of nitric acid.

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