0
What is the value of x When a 1.63 g sample of MgCl2xH2O is heated to remove all water a mass of 0.762 g remains?
Wiki User
∙ 11y ago
You begin with 1.63 g of MgCl2•xH2O.
You end up with 0.762 g MgCl2.
That means you lost 1.63 - 0.762 = 0.87 g of H2O.
0.762 g MgCl2 / 95.21 g (molar mass) = .00800 mol MgCl2
0.87 g H2O / 18.02 g (molar mass) = .048 mol H2O
x = mol solute / mol solvent
x = .048 mol H2O / .00800 mol MgCl2
x = 6
MgCl2•6H2O
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the value of X when 5.3268g sample of alum is heated and all the water is lost leaving 2.900?
The answer depends on what X is meant to represent.
What is the difference between sample and sample size?
a sample is a sample sized piece given... a sample size is the amount given in one sample
What is a experimental sample?
An experimental sample is an experiment that is just a sample of what you are looking for.
What is the difference between a sample and sampling?
sample is a noun and sampling is TO sample(verb)
Why wont a sample statistics change from sample to sample?
The sample mean may differ from the population mean, especially for small samples.
If a liquid sample of naphthalene is heated and remains at 218 and degC until it is completely vaporized you know that 218 and degC is the of naphthalene.?
Boiling point.
What fraction of a sample remains after three half lives?
An eighth remains.
Why sample need to be heated before heating in muffle furnace?
Heating a sample before placing it in a muffle furnace helps to remove any moisture or volatile impurities that could affect the results of the heating process. This pre-heating step ensures that the sample is dry and clean, allowing for more accurate and consistent results when it is heated in the muffle furnace.
What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
Why the NaOH solution is heated before adding BaCl2 in the two solutions method for determination of purity of NaOH sample?
Why the NaOH is heated before adding in BaCl2 for determination of purity of NaOH sample?
What fraction of a sample of N 16 remains undecayed after 43.2 seconds?
1.5% remains after 43.2 seconds.
After three half-lives what fraction of a radioactive sample remains?
1/8 of the original amount remains.
What happens to the half life as the sample gets older?
The half-life remains constant for a particular radioactive substance, regardless of how old the sample is. This means that the rate at which the substance decays and the time it takes for half of it to decay remains consistent over time.
What fraction of an original sample of a radio isotope remains after 3 half-life periods?
One eighth remains.
The color of light given off when a sample is heated corresponds to?
The color of light given off when a sample is heated corresponds to the energy levels of the electrons in the atoms of the sample. Each element emits light at specific wavelengths, creating a unique spectral signature that can be used to identify elements. This phenomenon is known as atomic emission spectroscopy.
Why is the sample needed to be heated over a Bunsen burner before heating in a muffle furnace?
Heating the sample over a Bunsen burner helps remove any moisture or volatile impurities that may be present on the surface of the sample. This preheating step ensures that the sample is clean and free of contaminants before being subjected to high temperatures in the muffle furnace, helping to prevent unwanted reactions or interference with the analysis.
What percentage of a radioactive sample remains after 5 half-lives?
After 5 half-lives, 3.125% (or 1/2^5) of a radioactive sample remains. Each half-life reduces the sample by half, so after 5 half-lives, there is only a small fraction of the original sample remaining.
