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How many moles of a substance with an atomic mass unit (amu) of 12 are present in a given sample?
To find the number of moles in a sample, divide the sample's mass by the substance's Atomic Mass unit (amu). For a substance with an amu of 12, the number of moles in the sample can be calculated by dividing the sample's mass by 12.
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How many lb-moles of substance are present in the given sample?
To determine the number of lb-moles in a sample, divide the weight of the sample in pounds by the molecular weight of the substance. This will give you the number of lb-moles present in the sample.
How can one determine the number of moles in a given sample?
To determine the number of moles in a given sample, you can use the formula: moles mass of sample (in grams) / molar mass of the substance. This formula helps you calculate the amount of substance in terms of moles based on its mass and molar mass.
How can one accurately measure hydrogen in a given sample?
One can accurately measure hydrogen in a given sample using techniques such as gas chromatography, mass spectrometry, or titration. These methods involve separating and quantifying the amount of hydrogen present in the sample.
How is a mole used in chemistry to measure the amount of a substance in a given sample?
A mole is used in chemistry as a unit of measurement to quantify the amount of a substance in a given sample. It represents a specific number of particles (6.022 x 1023) and allows chemists to easily compare and calculate the amount of different substances in reactions.
How hydrogen detected in the carbon and hydrogen test?
To test for hydrogen in the given substance, a dry sample is needed. Burn it in excess of oxygen. If the vapour turns white copper sulfate into blue colour, it indicates that there is water in present in the vapour. Hence, the organic compound contains hydrogen.
How many lb-moles of substance are present in the given sample?
To determine the number of lb-moles in a sample, divide the weight of the sample in pounds by the molecular weight of the substance. This will give you the number of lb-moles present in the sample.
What is the molar amount?
The molar amount refers to the number of moles of a substance present in a given sample. It is calculated by dividing the mass of the substance by its molar mass. Molar amount is typically expressed in moles.
What is the atomic weight used for?
You can use atomic weight to calculate the number of atoms in a given sample of an element. # g of sample element x (6.02 x 1023 / atomic weight in grams) = # of atoms
How many chloride ions are present?
The number of chloride ions present in a given substance depends on the substance size and the type of substance.
How can one determine the number of moles in a given sample?
To determine the number of moles in a given sample, you can use the formula: moles mass of sample (in grams) / molar mass of the substance. This formula helps you calculate the amount of substance in terms of moles based on its mass and molar mass.
Will a drug test show positive if you put the substance in a sample of urine from a person who did not use the substance?
Not necessarily. Some tests are meant to detect the metabolites of a given substance and not the substance itself; that is, the end products after our bodies have processed a given substance.
How can one accurately measure hydrogen in a given sample?
One can accurately measure hydrogen in a given sample using techniques such as gas chromatography, mass spectrometry, or titration. These methods involve separating and quantifying the amount of hydrogen present in the sample.
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.
How is a mole used in chemistry to measure the amount of a substance in a given sample?
A mole is used in chemistry as a unit of measurement to quantify the amount of a substance in a given sample. It represents a specific number of particles (6.022 x 1023) and allows chemists to easily compare and calculate the amount of different substances in reactions.
How hydrogen detected in the carbon and hydrogen test?
To test for hydrogen in the given substance, a dry sample is needed. Burn it in excess of oxygen. If the vapour turns white copper sulfate into blue colour, it indicates that there is water in present in the vapour. Hence, the organic compound contains hydrogen.
How is the mole used in chemistry to quantify the amount of a substance in a given sample?
The mole is used in chemistry as a unit of measurement to quantify the amount of a substance in a given sample. It represents a specific number of particles (6.022 x 1023) and allows chemists to easily compare and calculate the amount of different substances in a consistent way.
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
