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Alexxandr [17]
3 years ago
10

What are the units for measuring the mass of a regular object?

Chemistry
1 answer:
Whitepunk [10]3 years ago
8 0

Answer:

Mass is used to measure the weight of an object. For example, you are measuring the mass of your body when you step on to a scale. In the metric system of measurement, the most common units of mass are the gram and kilogram.

Explanation:

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Which of the following accurately represents a carbon source and the process that releases carbon from that source? A. Fossil fu
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Option C

Plants, cellular respiration accurately represents a carbon source and the process that releases carbon from that source

<u>Explanation:</u>

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3 years ago
A photon with 2.3 eV of energy can eject an electron from potassium. What is the corresponding wavelength of this type of light?
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Answer:

\lambda=540.16\ nm

Explanation:

Given that:

The energy of the photon = 2.3 eV

Energy in eV can be converted to energy in J as:

1 eV = 1.60 × 10⁻¹⁹ J

So, Energy = 2.3\times 1.60\times 10^{-19}\ J=3.68\times 10^{-19}\ J

Considering

Energy=\frac {h\times c}{\lambda}

Where,  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

c is the speed of light having value 3\times 10^8\ m/s

\lambda is the wavelength of the light being bombarded

Thus,  

3.68\times 10^{-19}=\frac {6.626\times 10^{-34}\times 3\times 10^8}{\lambda}

\frac{3.68}{10^{19}}=\frac{19.878}{10^{26}\lambda}

3.68\times \:10^{26}\lambda=1.9878\times 10^{20}

\lambda=5.40163\times 10^{-7}\ m=540.16\times 10^{-9}\ m

Also,  

1 m = 10⁻⁹ nm

So,  

\lambda=540.16\ nm

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4 years ago
FIRST TO ANSWER GETS BRAINLIEST
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Answer:

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Explanation:

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