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umka21 [38]
3 years ago
8

Im looking for a girl 15-17 good personality my name is cole I am 16

Chemistry
1 answer:
Vinvika [58]3 years ago
4 0
Are you in a learning app trying to find love?
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A 5.0 milliliter sample of a substance has a mass of 12.5 grams. What is the mass of a 100 milliliter sample of the same substan
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It sould be 250 grams

Explanation:

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3 years ago
One atom of silicon can properly be combined in a compound with
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your answer is c. two atoms of oxygen.

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What is the energy of an electromagnetic wave with a frequency of 8•10^12 Hz?
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Find the Energy of the Photon by Planck's Equation, given:

E (photon energy) =? (in Joule)

h (Planck's constant) = 6.626*10^{-34}\:J * s

f (radiation frequency) = 8*10^{12}\:Hz

Therefore, we have:

E = h*f

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\boxed{\boxed{E = 5.3008*10^{-21}\:Joule}}\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

8 0
3 years ago
Gaseous methane CH4 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. What is the t
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Answer:

50.8 g

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Equation of reaction.

CH_4 + 2O_2 \to CO_2 + 2H_2O

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number of moles of oxygen gas = 90.3 g / 32 g/ mol

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Since 1 mol of methane requires 2 moles of oxygen

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Thus, methane serves as a limiting reagent.

2.82 mol oxygen gas will result in 2.82 moles of water

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Are controlled substances and illegal drugs the same thing?
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