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BARSIC [14]
2 years ago
9

What is the mass of 6.73x10^23 atoms of carbon

Chemistry
1 answer:
kap26 [50]2 years ago
6 0

Answer: 13.42g

Explanation:

1mole of carbon =12g

1mole (12g) of carbon contains 6.02x10^23 atoms.

Therefore, Xg of carbon will contain 6.73x10^23 atoms i.e

Xg of carbon = (12x6.73x10^23)/6.02x10^23 = 13.42g

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A student sets up the following equation to convert a measurement. (The stands for a number the student is going to calculate.)
Aliun [14]

The question is incomplete, here is the complete question:

A student sets up the following equation to convert a measurement. (The stands for a number the student is going to calculate.) Fill in the missing part of this equation.

23.Pa.cm^3=?kPa.m^3

<u>Answer:</u> The measurement after converting is 23\times 10^{-9}kPa.m^3

<u>Explanation:</u>

We are given:

A quantity having value 23.Pa.cm^3

To convert this into kPa.m^3, we need to use the conversion factors:

1 kPa = 1000 Pa

1m^3=10^6cm^3

Converting the quantity into kPa.m^3, we get:

\Rightarrow 23.Pa.cm^3\times (\frac{1kPa}{1000Pa})\times (\frac{1m^3}{10^6cm^3})\\\\\Rightarrow 23\times 10^{-9}kPa.m^3

Hence, the measurement after converting is 23\times 10^{-9}kPa.m^3

6 0
2 years ago
The enthalpy change for the explosion of ammonium nitrate with fuel oil is –7198 kJ for every 3 moles of NH4NO3. What is the ent
anastassius [24]

Answer:

−2399.33 kJ

Explanation:

If NH₄NO₃ reacts with fuel oil to give a ΔH of -7198 for every 3 moles of NH₄NO₃

What is the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction

∴ For every 1 mole, we will have \frac{1}{3} of the total enthaply of the 3 moles

so, to determine the 1 mole; we have:

\frac{1}{3}*(-7198kJ)

= −2399.33 kJ

∴ the enthalpy change for 1.0 mole of NH₄NO₃ in this reaction = −2399.33 kJ

7 0
2 years ago
A container of hydrogen gas has a volume of 1.46 liters, a pressure of 2.18 atm, and a temperature of 185 Kelvin. How many moles
Masja [62]
<span>n = PV / RT hop it helps u ok</span>
6 0
2 years ago
In the synthesis of barium carbonate from an alkali metal carbonate (M2CO3 where M is one of the alkali metals) a student genera
Paraphin [41]

Answer:

0.019 moles of M2CO3

Explanation:

M2CO3(aq) + BaCl2 (aq) --> 2MCl (aq) + BaCO3(s)

From the equation above;

1 mol of  M2CO3 reacts to produce 1 mol of BaCO3

Mass of BaCO3 formed = 3.7g

Molar mass of BaCO3 = 197.34g/mol

Number of moles = Mass / Molar mass = 3.7 / 197.34 = 0.0187  ≈ 0.019mol

Since 1 mol of M2CO3 reacts with 1 mol of BaCO3,

1 = 1

x = 0.019

x = 0.019 moles of M2CO3

3 0
2 years ago
For a solar eclipse to occur which of the following alignments is necessary? A. The moon is located along a straight line betwee
svlad2 [7]

A. I'm pretty sure, could be C though..

8 0
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