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andre [41]
4 years ago
5

14x23=(10x20) + (10x3) + (4x20) + (4x3)

Chemistry
1 answer:
soldi70 [24.7K]4 years ago
5 0
The anwser will be 464
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Calculate the number of C atoms in 0.183 mol of C.
Alex Ar [27]

Answer: 1.10x10²³ atoms of C

110202600000000000000000 atoms C

Explanation:The solution process is shown below.

0.183 mole C x 6.022x10²³ atoms C / 1 mole C

= 1.10x10²³ atoms C

or 110202600000000000000000 atoms C

4 0
3 years ago
when 34 700 j of heat are applied to a 350 g sample of liquid methanol, what must its heat of vaporization be to convert it all
vlada-n [284]

Answer:

The temperature at which the vapor pressure of a liquid is just equal to the external ... The conversion of a liquid to a gas below the boiling point is called ... equilibrium temperature of the mixture was 36.0 °C. What is the specific heat (J/ g°C) of the metal

Explanation:

4 0
3 years ago
Q13 Which compound has a boiling point that is influenced by hydrogen bonding?
melomori [17]

Answer:

A. \:  \:  CH _{3}CHO

ethanal

This is because hydrogen is bonded with oxygen atom which is highly electronegative.

3 0
3 years ago
Read 2 more answers
At 85°C, the vapor pressure of A is 566 torr and that of B is 250 torr. Calculate the composition of a mixture of A and B that b
Phantasy [73]

Answer:

Composition of the mixture:

x_{A} =0.652=65.2 %

x_{B} =0.348=34.8 %

Composition of the vapor mixture:

y_{A} =0.809=80.9%

y_{B} =0.191=19.1%

Explanation:

If the ideal solution model is assumed, and the vapor phase is modeled as an ideal gas, the vapor pressure of a binary mixture with x_{A} and x_{B} molar fractions can be calculated as:

P_{vap}=x_{A}P_{A}+x_{B}P_{B}

Where P_{A} and P_{B} are the vapor pressures of the pure compounds. A substance boils when its vapor pressure is equal to the pressure under it is; so it boils when P_{vap}=P. When the pressure is 0.60 atm, the vapor pressure has to be the same if the mixture is boiling, so:

0.60*760=P_{vap}=x_{A}P_{A}+x_{B}P_{B}\\456=x_{A}P_{A}+(1-x_{A})P_{B}\\456=x_{A}*(P_{A}-P_{B})+P_{B}\\\frac{456-P_{B}}{P_{A}-P_{B}}=x_{A}\\\\\frac{456-250}{566-250}=x_{A}=0.652

With the same assumptions, the vapor mixture may obey to the equation:

x_{A}P_{A}=y_{A}P, where P is the total pressure and y is the fraction in the vapor phase, so:

y_{A} =\frac{x_{A}P_{A}}{P}=\frac{0.652*566}{456} =0.809=80.9 %

The fractions of B can be calculated according to the fact that the sum of the molar fractions is equal to 1.

7 0
3 years ago
A sample of mg(hco3)2 contains 1.8 moles of oxygen atom find the number of carbon atoms in the given sample
Nana76 [90]

Answer:

0.60 moles of atoms of carbon

Explanation:

Step 1: Given data

  • Chemical formula of the compound: Mg(HCO₃)₂
  • Moles of oxygen atoms: 1.8 moles

Step 2: Calculate the number of carbon atoms in the given sample

According to the chemical formula of the compound, the molar ratio of C to O is 2:6, that is, there are 2 moles of atoms of C every 6 moles of atoms of O. The number of moles of atoms of C is:

1.8 mol O × 2 mol C / 6 mol O = 0.60 mol C

4 0
3 years ago
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