3 years ago

what would the molarity of a solution be if you took 10 mL of a 13M stock solution and made a 300 mL solution?

Chemistry

1 answer:

nignag [31]3 years ago

8 0

Answer:

0.43M

Explanation:

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Answer:

You are the Cobalt

Explanation:

The least massive metalloid in the fourth period is Germanium, and it have 32 protons. If you have 5 less protons: 32 - 5 = 27 protons. The element with 27 protons is Cobalt

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If you add oil to water and shake the two liquids together what will you form

dalvyx [7]

There will be oil bubbles because oil is more dense than water so therefore they would not mix

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How many grams of CO2 are produced from 51 g of CH4

Elina [12.6K]

Answer:

use the equation Mass= RFM*Moles

Explanation:

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3 years ago

How many grams of Iron (III) oxide (Fe2O3) can be produced from 25.0 g of iron and an excess of oxygen?

Masja [62]

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2.3

Explanation:

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3 years ago

Microwave ovens emit microwave energy with a wavelength of .129 m. What is the energy of exactly one photon of this microwave ra

gayaneshka [121]

λ=Wavelength = .129 m = 0.129 m

E = energy = ?

h =Planck constant = 6.63 × 10^-34 J.s

f = frequency of photo/ electromagnetic radiation = c/λ

c = Speed of light in a vacuum = 3 × 10^8 m/s

___o___o___

$E = hf \\ \\ E = h \frac{c}{λ} \\ \\ E = 6.63 \times {10}^{ - 34} \frac{3 \times {10}^{8} }{0.129} \\ \\ E = \frac{6.63 \times {10}^{ - 34} \times 3 \times {10}^{8} }{0.129} \\ \\ E = \frac{663 \times {10}^{ - 36} \times 3 \times {10}^{8} }{129 \times {10}^{ - 3} } \\ \\E = \frac{1989 \times {10}^{ - 28} }{129 \times {10}^{ - 3} } \\ \\ E = 15.4 \times {10}^{ - 25} J \\ \\ E = 1.54 \times {10}^{ - 24} J$

I hope I helped you^_^

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3 years ago