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abruzzese [7]
3 years ago
13

If each mole contains 6.023 x 10^23 atoms of magnesium. How many magnesium atoms reacted in your reaction? 400 mg of Magnesium w

ere used.
Chemistry
1 answer:
creativ13 [48]3 years ago
5 0

Answer:

0.1× Avogadro's numbers

10×10^22

Explanation:

convert given mass to moles

then multiply by Avogadro's number

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LenKa [72]
because a postive and negative can be used in. ion

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3 years ago
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sarah measures out 151 grams of SO2. how many moles is this? Express your answer to three significant figures. ​
svp [43]

150 g SO₂ = 2.36 mol SO₂


M_r = 32.06 + 2×16.00 = 32.07 + 32.00 = 64.06


Moles of SO₂ = 151 g SO₂ × [1 mol SO₂/64.06 g SO₂] = 2.36 mol SO₂



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3 years ago
Match the mineral categories to their best descriptions.a. sulfide mineralsminerals that have a sulfur atom surrounded by four o
alexandr1967 [171]
<span>Following is the match the mineral categories to their best descriptions:

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3 years ago
Which statement Ilustrates the difference between a chemical reaction and a nuclear reaction?
pishuonlain [190]

Answer:

A nuclear reaction releases more energy per gram and appears to violate the law of conservation of mass.

Explanation:

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  • Factors like temperature, pressure, and catalysts do not affect the rate of nuclear reactions while they influence the chemical reactions.
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8 0
3 years ago
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nevsk [136]

Answer:

frequency of light = 4.2\times 10^{-13}

Explanation:

we know that relation between frequency and wavelength of light is

frequency × wavelength = speed of light.

therefore frequency = \frac{c}{wavelength}

                                  = \frac{3\times 10^{8}}{6.98\times 10^{-6}}

                                  =4.2\times 10^{-13}

4 0
3 years ago
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