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Leokris [45]
3 years ago
15

PLEASE HELP 15 POINTS ONE QUESTION

Chemistry
1 answer:
KIM [24]3 years ago
3 0
Answer: 12 Protons, 12 electrons and 16 neutrons. The number of protons and electrons always stays the same, but the neutrons is the mass-protons. In this case, 28-12=16 neutrons.
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Determine what mass of carbon monoxide and what mass of hydrogen are required to form 6.0 kg of methanol by the reaction CO(g) +
siniylev [52]

Answer:

5250 grams or 5.25 kg of carbon monoxide and 375 grams of hydrogen are required to form 6 kg of methanol.

Explanation:

The balanced reaction:

CO (g) + 2 H₂ (g) -> CH₃OH (l)

By stoichiometry of the reaction, the following amounts of moles of each compound participate in the reaction:

  • CO: 1 mole
  • H₂: 2 moles
  • CH₃OH: 1 mole

Being the molar mass of each compound:

  • CO: 28 g/mole
  • H₂: 1 g/mole
  • CH₃OH: 32 g/mole

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

  • CO: 1 mole* 28 g/mole= 28 grams
  • H₂: 2 moles* 1 g/mole= 2 grams
  • CH₃OH: 1 mole* 32 g/mole= 32 grams

Being 6 kg equivalent to 6000 grams (1 kg= 1000 grams), you can apply the following rules of three:

  • If by stoichiometry 32 grams of methanol are formed from 28 grams of carbon monoxide, 6000 grams of methanol are formed from how much mass of carbon monoxide?

mass of carbon monoxide=\frac{6000 grams of methanol*28 grams of carbon monoxide}{32 grams of methanol}

mass of carbon monoxide= 5250 grams= 5.25 kg

If by stoichiometry 32 grams of methanol are formed from 2 grams of hydrogen, 6000 grams of methanol are formed from how much mass of hydrogen?

mass of hydrogen=\frac{6000 grams of methanol*2 grams of hydrogen}{32 grams of methanol}

mass of hydrogen= 375 grams

<u><em>5250 grams or 5.25 kg of carbon monoxide and 375 grams of hydrogen are required to form 6 kg of methanol. </em></u>

8 0
3 years ago
The voltage in a flashlight bulb is 6.0 volts and has a resistance of 24 ohms. Calculate the current
taurus [48]

Answer:

Thanks for the points

Explanation:

5 0
3 years ago
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Assoli18 [71]

The answer would be A) Physical Change. When the silver tarnishes it is still remnants of silver. If it were B, the silver would change into a different substance.

6 0
3 years ago
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mr Goodwill [35]

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8 0
2 years ago
a sample of carbon is burnt at a rate of 0.70 gram per second for 40 minutes to generate heat write a balanced equation for the
Schach [20]

Answer:

0.00015dm³

Explanation:

the equation gives

C + O2 — CO2

40min × 60s/1min = 2400s

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volume at STP since its a gas

1 mol — 22.4dm³

6.59×10^-6 — 22.4×6.59×10^-6/1 = 0.00015dm³

*this is the only way i could think of so am not 100% sure

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