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How many moles are present in 234g of NaCl?
To find the number of moles in 234g of NaCl, divide the given mass by the molar mass of NaCl. The molar mass of NaCl is 58.44 g/mol (sodium = 22.99 g/mol, chlorine = 35.45 g/mol). So, 234g ÷ 58.44 g/mol = 4 moles of NaCl.
What chemical formula for table salt?
NaCl It is a rock salt an ore for sodium
Predict and explain which of the following systems are electrically conducters asolid Nacl bmolten Nacl can aqueous solution Nacl?
Solid NaCl is not an electrical conductor as the ions are held in a fixed lattice structure. Molten NaCl and aqueous solution NaCl are electrical conductors as the ions are free to move and carry charge, allowing for the conduction of electricity.
What is the mole fraction of 18 mol NaCl in a solution of 100 mol water?
The mole fraction of NaCl in the solution is calculated by dividing the moles of NaCl by the total moles of NaCl and water. In this case, the mole fraction of 18 mol NaCl in a solution of 100 mol water is 0.15 (18 mol NaCl / (18 mol NaCl + 100 mol water)).
What mass of NaCl would have to be dissolved in 1.000 kg of water to raise the boiling point by 2.00 degrees Celsius?
To calculate the mass of NaCl needed to raise the boiling point of 1.000 kg of water by 2.00 degrees Celsius, you would use the equation: ΔTb = i * Kf * m, where i is the van't Hoff factor (for NaCl, it is 2), Kf is the cryoscopic constant for water (1.86 °C kg/mol), ΔTb is the boiling point elevation (2.00 °C), and m is the molality of the solution (in mol/kg). Solve for 'm' first and then use that value to calculate the mass of NaCl needed.
What is the expected value for 'i' for NaCl?
2
What is the Ksp of NaCl?
This value is 36.
Is the expected value the same as the standard deviation?
No. The expected value is the mean!
What is the Ksp value for NaCl at room temperature?
This value is approx. 36.
What is the meaning of expected value in a probability distribution?
The expected value is the average of a probability distribution. It is the value that can be expected to occur on the average, in the long run.
How do i find expected value in a martingale system?
The expected value of a Martingale system is the last observed value.
What is the mean of a normal distribution?
It is the expected value of the distribution. It also happens to be the mode and median.It is the expected value of the distribution. It also happens to be the mode and median.It is the expected value of the distribution. It also happens to be the mode and median.It is the expected value of the distribution. It also happens to be the mode and median.
Difference between mean and expected value?
For a population the mean and the expected value are just two names for the same thing. For a sample the mean is the same as the average and no expected value exists.
What is the expected value of the sum of the number that appears when a pair of fair dice is rolled?
The expected value is 7.
The expected value is what kind of aspect of how probability distribution is characterized?
Expected value is the outcome of confidence of how probability distribution is characterized. If the expected value is greater than the confidence interval then the results are significant.
What does it mean if you get a negative number when you calculate for percent error?
Depending on whether you subtract actual value from expected value or other way around, a positive or negative percent error, will tell you on which side of the expected value that your actual value is. For example, suppose your expected value is 24, and your actual value is 24.3 then if you do the following calculation to figure percent error:[percent error] = (actual value - expected value)/(actual value) - 1 --> then convert to percent.So you have (24.3 - 24)/24 -1 = .0125 --> 1.25%, which tells me the actual is higher than the expected. If instead, you subtracted the actual from the expected, then you would get a negative 1.25%, but your actual is still greater than the expected. My preference is to subtract the expected from the actual. That way a positive error tells you the actual is greater than expected, and a negative percent error tells you that the actual is less than the expected.
What is the specific heat capacity of NaCl?
This value is 36,79 kJ/mol.
