3 years ago

!!29 POINTS!! PLS HELP ASAP

Chemistry

1 answer:

ICE Princess25 [194]3 years ago

8 0

Answer:

The person who just wanted points is annoying

Explanation:

WHY WOULD YOU DO THAT

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What is a limiting factor?

alukav5142 [94]

A limiting factor helps an organism outcompete other organisms i think that’s the answer

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3 years ago

Substances that contain a transition metal can be oxidizing. The greater the number of oxidation of this metal, the greater the

Ne4ueva [31]

B I think that it but I don’t know

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3 years ago

Walter gets a paper back in lab with “-2.75% error” written on it. He found the mass of an object to be 100.7 grams. What should

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4 years ago

A laser emits a green light with wavelength of 515 nm. Calculate the frequency of this light.

pentagon [3]

Answer:

$Frequency=5.83\times 10^{14}\ Hz$

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

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

Given, Wavelength = 515 nm

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

So,

Wavelength = $515\times 10^{-9}$ m

Thus, Frequency is:

$Frequency=\frac{c}{Wavelength}$

$Frequency=\frac{3\times 10^8}{515\times 10^{-9}}\ Hz$

$Frequency=5.83\times 10^{14}\ Hz$

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3 years ago

How many moles are in 123.0g (NH4)2SO4

Luda [366]

Here you go! There are 0.9307 moles in 123.0 g of the compound. I solved this by using a fence post method. I calculated the number of grams in one mol of (NH4)2 SO4 and got 132.16.

I did this by finding the atomic mass of each element on the periodic table (my work is in the color blue for this step)

After that, i divided the given mass by the mass of one mol of the compound.

The answer is 0.9307 moles!! I hope this helped you! :))

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3 years ago