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3 years ago

In a chemical reaction, 24 grams of

Chemistry

1 answer:

Alex777 [14]3 years ago

7 0

Answer: there must be 64 g + 24 g = 88 g of carbon dioxide present after the reaction.

Explanation: Since the total mass of substances used up in the reaction must be equal to the amount of product formed, according to the conservation of mass law,

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How many moles of potassium chlorate are needed to produce 5.25 moles of oxygen

serg [7]

2KCIO3=2KCL+302
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3 years ago

Calculate the wavelength in nm of ultraviolet light with frequency of 5.5 x 10¹⁵ Hz.

snow_tiger [21]

Answer: Wavelength of ultraviolet light is 54 nm.

Explanation:

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They can travel in vacuum as well and travel with the speed of light.

The relationship between wavelength and frequency of the wave follows the equation:

$\nu=\frac{c}{\lambda}$

where,

$\nu$ = frequency of the wave = $5.5\times 10^{15}Hz$

c = speed of light = $3\times 10^8ms^{-1}$

$\lambda$ = wavelength of the wave

Putting in the values we get:

$5.5\times 10^{15}s^{-1}=\frac{3\times 10^8ms^{-1}}{\lambda}$

$\lambda=0.54\times 10^{-7}m$

$1nm=10^{-9}m$

$\lambda=54nm$

Thus wavelength of ultraviolet light is 54 nm.

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3 years ago

PPM and PPB are what type of data?

AlexFokin [52]

PPM and PPB are units used in atmospheric chemistry to describe the concentration of gases. PPM stands for parts of gas per million parts of air, and PPB is parts per billion. If that's not easy to imagine, try these examples: Part per million

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3 years ago

HNO2 + CaCO3 = H2CO3 + Ca(NO2)<br><br> Can someone please balance this equation?!?!

katen-ka-za [31]

Balanced equation

So we see from inspection that H is not balanced. And by balancing H we have to add 2(NO2) and 2H

So the balanced equation is;

2HNO2 + CaCO3 = H2CO3 + Ca(NO2)2

Any questions feel free to ask.

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4 years ago

List the 3 mole equalities.

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3 years ago

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