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3 years ago

Would be grateful if someone could show the process for solving this problem.

Chemistry

1 answer:

In-s [12.5K]3 years ago

4 0

I don’t know i’m trying to get some points

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Can someone help me to answer these Chemistry questions?

Andreyy89

Which ones in specific

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4 years ago

What is the wavelength, in nm, of radiation which has an energy if 3.371 x 10^-19 joules per photon?

mr_godi [17]

Answer:

The correct option is:

D) 589.3 nm

Explanation:

Energy of one photon = $3.371\times10^{-19}J$

$Energy=\frac{hc}{\lambda}\\\\h=Planck's\:constant=6.626\times10^{-34}J/s\\c=speed\:of\:light=3\times10^{8}m/s\\\lambda=wavelength\:of\:radiation\\\\\lambda=\frac{hc}{Energy}=\frac{6.626\times10^{-34}\times3\times10^{8}}{3.371\times10^{-19}}=5.897\times10^{-7}m=589.7nm\\$

Hence, the wavelength (in nm) of radiation is 589.7nm (approximately equal to 589.3nm)

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3 years ago

Can y’all help me with this question How many atoms are found in the chemical formula below Al2( SiO3)2

Arte-miy333 [17]

Answer:

the answer is 10

Explanation:

Al2 is 2 atoms by itself

(SiO3)2 is 8 because Si is a single atom and O3 is 3 oxygen atoms but because of the subscript outside of the parentheses it doubles and becomes 2 and 6 respectively

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3 years ago

Wind patterns choose all that apply

kumpel [21]

I think the answer is B.

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3 years ago

Cuantos moles de CO2 se requieren para reaccionar con 2 moles de Ba (OH)2

EastWind [94]

Answer:

hola soy jess, tu respuesta esta aqui

¿cuantos moles de CO2 se requiere para reaccionar 2 moles de Ba(OH)2

2 mol Ba(OH)₂ × \frac{1molCO_{2} }{1molBa (OH)_{2}}

1molBa(OH)

1molCO

= 2 moles CO₂

Explanation:

espero que pueda ayudarte

hermana/hermano

lo que

hahahaha

3 0

3 years ago