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GREYUIT [131]
2 years ago
15

PLEASE HELP ME ASAP THIS IS DUE IN 10 MINUTES AND I AM STUCK!!

Chemistry
2 answers:
Art [367]2 years ago
8 0

Answer:

c

Explanation:

MissTica2 years ago
7 0
Is it due already ? In my opinion I see it as D
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Which of the following is the best definition of a scientific theory?Help me plz
tatiyna
A scientific theory is a well tested explanation of a natural phenomenon.
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3 years ago
Why do you think there are different stars in each nighttime section of the artifact?
chubhunter [2.5K]

Answer:

The sky looks different in each nighttime section of the artifact because the artifact sections represent different seasons. ... Different constellations are visible on different nights throughout the year because of the earth's orbit. The Earth orbits around the sun. A full orbit is 365 days or one year.

Explanation:

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3 years ago
Many home barbeques are fueled with propane gas (C3H8)(C3H8). Part A What mass of carbon dioxide is produced upon the complete c
Andrew [12]

Answer:

41264 g of CO₂

Explanation:

Combustion reaction is:

C₃H₈ + 5O₂ →  3CO₂  +  4H₂O

1 mol of propane react to 5 moles of oxygen in order to proudce 3 moles of carbon dioxide and 4 moles of water.

In a combustion reaction, our reactant reacts to oxygen and the products are always CO₂ and water.

We have the volume of propane but we need moles of it, so we need to apply density.

Density = mass / volume so mass = density . volume.

Density of propane is: 493 g/L

Mass of propane is 493 g/L . 27.9L = 13754.7 g

We convert mass to moles: 13754.7 g . 1 mol/ 44g = 312.6 moles

According to reaction, 1 mol of propane can produce 3 moles of CO₂

Our 312.6 moles will produce 312.6 . 3 = 937.8 moles

We convert moles to mass: 937.8 mol . 44 g/mol = 41264 g

3 0
2 years ago
During beta decay, a nucleus _________.. a. gains a proton and loses a neutron. b. gives up two protons and two neutrons. c. mai
Alexxandr [17]
Hello!

<span>a. gains a proton and loses a neutron. </span>This process gives more stability to the atom.

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8 0
3 years ago
What is valence of helium​
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The valence of helium is 0.
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2 years ago
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