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Do relative proportions of elements in a given compound vary from sample to sample?
Wiki User
∙ 12y ago
im not really sure....sorry
Wiki User
∙ 12y ago
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What is absolute sample size?
It is the number of elements in the sample. By contrast, the relative sample size is the absolute sample size divided by the population size.
How do you find the sample mean?
Add the values of the variable for all elements in the sample and divide by the number of elements on the sample.
Consider a random sample of size 45 from a population with proportion 0.30 find the standard error of the distribution of sample proportions?
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Is The standard deviation of all possible sample proportions increases as the sample size increases?
The standard deviation would generally decrease because the large the sample size is, the more we know about the population, so we can be more exact in our measurements.
What in an expression of Dalton's law constant?
Dalton's law of constant proportion states that any sample of a chemical compound will have its constituent elements appearing in the same proportion by mass. Thus 8/9 of the mass of any sample of water will be oxygen and the remaining 1/9 will be hydrogen.
Who said Any sample of a chemical compound will contain the same elements in the same proportions?
This is the law of definite proportions: Joseph Proust, 1806.
What is absolute sample size?
It is the number of elements in the sample. By contrast, the relative sample size is the absolute sample size divided by the population size.
Do compounds always contain the same elements in the ratio?
Yes because no samples are exactly the same.
What is radiometeric dating?
Radiometeric dating is a technique to date geological materials like rocks etc by determining the relative proportions of particular radioactive isotopes present in a sample.
Is the law of definite proportions important?
In chemistry, the law of definite proportions, sometimes called Proust's Law, states that a chemical compound always contains exactly the same proportion of elements by mass. An equivalent statement is the law of constant composition, which states that all samples of a given chemical compound have the same elemental composition by mass. For example, oxygen makes up about 8/9 of the mass of any sample of pure water, while hydrogen makes up the remaining 1/9 of the mass. Along with the law of multiple proportions, the law of definite proportions forms the basis of stoichiometry.
What is the characteristic of a pure substance?
The defining characteristic of a pure chemical substance is that any sample of it contains the same elements in the same mass proportions to one another.
Why is the law of definite proportion important.?
In chemistry, the law of definite proportions, sometimes called Proust's Law, states that a chemical compound always contains exactly the same proportion of elements by mass. An equivalent statement is the law of constant composition, which states that all samples of a given chemical compound have the same elemental composition by mass. For example, oxygen makes up about 8/9 of the mass of any sample of pure water, while hydrogen makes up the remaining 1/9 of the mass. Along with the law of multiple proportions, the law of definite proportions forms the basis of stoichiometry.
Is magnesium an element or compound?
Magnesium is an element.it is a compound as it is made up of two elements
What proportion of sample proportions have a value greater than the population in any normal sample proportion distribution?
A half.
A sample that cannot be separated into two or more substances by physical means is what?
A sample that cannot be separated into two or more substances by physical means is a compound. A compound is made up of 2 or more elements which cannot be broken down by physical means.
How do you find the sample mean?
Add the values of the variable for all elements in the sample and divide by the number of elements on the sample.
Consider a random sample of size 45 from a population with proportion 0.30 find the standard error of the distribution of sample proportions?
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