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frez [133]
3 years ago
9

A sample of c3h8o that contains 200 molecules contains __________ carbon atoms.

Chemistry
2 answers:
larisa86 [58]3 years ago
5 0

<u>Answer:</u> The number of carbon atoms in 200 molecules of given sample is 600 atoms.

<u>Explanation:</u>

We are given a chemical compound having chemical formula C_3H_8O

In 1 molecule of C_3H_8O, 3 atoms of carbon, 8 atoms of hydrogen and 1 atom of oxygen are present.

We need to calculate the number of carbon atoms in 200 molecules of the sample.

So, in 200 molecules of C_3H_8O, the number of carbon atoms are = (3\times 200)=600 atoms.

Hence, the number of carbon atoms in 200 molecules of given sample is 600 atoms.

Vesna [10]3 years ago
4 0

The answer is 600. A sample of C3H8O which contains two hundred molecules, it also holds six hundred carbon atoms. A carbon atom holds six electrons, four of its electrons are found in its valence shell or also known as its outer shell.

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In which of the following situations is the greatest amount of work accomplished?
Dahasolnce [82]

<span>work = force x distances </span>

<span>A - moving 2 newton's up 0.6 meter = 1.2 joules
B - moving 4 newton's up 0.6 meter = 2.4 joules
C - moving 6 newton's up 0.3 meter = 1.8 joules
D - moving 9 newton's up 0.3 meter = 2.7 joules
The greatest amount of work is in example D. 
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 D is your answer. </span>

7 0
3 years ago
Read 2 more answers
A monatomic ideal gas at a pressure of 1.00 atm expands adiabatically from an initial volume of 1.50 m3 to a final volume of 4.0
tamaranim1 [39]

The correct answer is 1atm.

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7 0
2 years ago
In a constant‑pressure calorimeter, 60.0 mL of 0.300 M Ba ( OH ) 2 was added to 60.0 mL of 0.600 M HCl . The reaction caused the
densk [106]

Answer:

Q sln = 75.165 J

Explanation:

a constant pressure calorimeter:

  • Q sln = mCΔT

∴ m sln = m Ba(OH)2 + m HCl

∴ molar mass Ba(OH)2 = 171.34 g/mol

∴ mol Ba(OH)2 = (0.06 L)(0.3 mol/L) = 0.018 mol

⇒ mass Ba(OH)2 = (0.018 mol)(171.34 g/mol) = 3.084 g

∴ molar mass HCl = 36.46 g/mol

∴ mol HCl = (0.06 L)(0.60 mol/L) = 0.036 mol

⇒ mass HCl = (0.036 mol)(36.46 g/mol) = 1.313 g

⇒ m sln = 3.084 g + 1.313 g = 4.3966 g

specific heat (C):

∴ C sln = C H2O = 4.18 J/g°C

∴ ΔT = 26.83°C - 22.74°C = 4.09°C

heat absorbed (Q):

⇒ Q sln = (4.3966 g)(4.18 J/g°C)(4.09°C)

⇒ Q sln = 75.165 J

8 0
3 years ago
Please answer for me thanks...
tatuchka [14]

Explanation:

Since mole ratio of O2 : NH3 = 7 : 4,

Volume of NH3 = 50dm³ * 4/7 = 28.57dm³.

5 0
3 years ago
How many grams of iron contain 4.06X10^24 atoms of iron?
Oxana [17]
4.06x20^24/6.02x10^23 = 6.744 moles x 55.845 g/mole = 376.61868grams
4 0
3 years ago
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