Copper atom has 29 protons and 34 neutrons in its nucleus
Answer:
Mg, U, Cu
Explanation:
Answer:
divide the mass of element in 1 mole of the compound by the compound's molar mass and multiply the answer by 100.
Explanation:
take the molar mass of hydrogen in the water molecule, divide by the total molar mass of water, and multiply by 100.
does it help?
A. dose
a dose is an amount, a response is an action, and pollutant and toxins are substances
I attached the working and the answer to both questions below.
Please note that C = speed of light, ν = frequency, λ= wavelength
<span>The wavelength of a 2.28 x 10</span>¹⁷<span> Hz wave is
1.31 </span>
×<span>
10</span>
⁷ cm<span>
The frequency of a 7.30 x 10</span>⁻⁵<span> m wave
4.11 </span>
×<span>
10</span>
¹² s⁻¹