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Do chemical formulas show the total number of atoms in a sample of a compound?
Wiki User
∙ 8y ago
Yes, chemical formulas show the number of atoms in a compound. Water is H2O -- two hydrogen atoms bonded to one oxygen atom. Carbon dioxide is CO2 -- one carbon and two oxygen atoms.
Wiki User
∙ 8y ago
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Is magnesium an element or compound?
Magnesium is an element.it is a compound as it is made up of two elements
Is iron filings and sand a compound or an element?
compoundIf the iron fillings are pure, they contain only one type of atom (all the atoms have the same number of protons). Thus, the filings would be a sample of the element iron. If the filings are rusty, then they would contain compounds (iron oxides).
A 7.300 gram sample of aluminum was quantitatively combined with a sample of selenium to form a compound The compound weighed 39.35 grams What is the empirical formula for this compound?
The answer is Al2Se3 ... dont ask me why or how but thats what my online qiuz said was correct so thats the right answer!
Is the number of atoms in a sample directly related to the mass of that sample?
If the chemical composition of the sample is known, then the answer is yes. However, equal masses of platinum and magnesium, for example, contain quite different numbers of atoms, because the atomic mass of platinum is much higher than that of magnesium.
What data does gas chromatography provide?
Gas chromatography (GC) provides data on the chemical composition of a sample. It separates and analyzes the individual components of a mixture based on their physical and chemical properties. The data provided by GC includes: Retention time: The time it takes for a compound to travel through the GC column and reach the detector. This can be used to identify the compound. Peak area: The area under the peak on the chromatogram represents the amount of the compound present in the sample. Peak height: The height of the peak on the chromatogram represents the concentration of the compound in the sample. Mass spectrum: GC can be coupled with mass spectrometry (GC-MS) to provide additional data on the molecular weight and structure of the compounds in the sample. Identification: GC can be used to identify individual compounds in a mixture based on their retention time and mass spectrum. This information can be compared to a database of known compounds to identify the unknown compounds in the sample.
Is the original water liquid sample a compound an element a heterogeneous mixture or a homogeneous mixture?
Water (H2O) is a chemical compound.
What is a sample of a matter either single element or a single compound that has a definite chemical and physical properties?
a pure substance. :)
How do you distinguish between nitrogen oxide and oxygen using a chemical test?
Use a sample of pyrogallol (C6H6O6) in the sample followed by a combustion reaction. This compound absorbs oxygen present.
What is the total number of moles of sodium azide in a 52-g sample of the compound?
3
Is a sample of matter that contains more than one type of atom chemically bonded together in a set proportion?
This is a chemical compound.
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.
Is tungsten a compound mixture or element?
Tungsten carbide is a metallic chemical compound. Unlike steel, it is not a mixture or alloy. The chemical formula for tungsten carbide is WC, indicating that the number of atoms of tungsten (W) in a sample of tungsten carbide is equal to the number of number of atoms of carbon (C) in that sample. Because each atom of tungsten weighs about 15.3 times as much as each atom of carbon, almost 94% of the mass of a sample of tungsten carbide is represented by tungsten atoms. Although tungsten carbide is not itself a mixture, it is often mixed (alloyed) with other metals such as nickel or cobalt.
How many moles in NaCHO3?
A mole is a defined number of atoms/molecules of an element/compound. Therefore, the number of moles of NaCHO3 will depend on the mass of NaCHO3 that you have. To calculate the number of moles in a known sample, divide the mass of the sample (in grams) by the molecular weight.
Is magnesium an element or compound?
Magnesium is an element.it is a compound as it is made up of two elements
How many atoms are in this compound Magnesium?
The question cannot be answered for several reasons. The first is that reduced magnesium is not a compound. Next, you did not provide either a weight or a volume of the sample of magnesium. Without either one or the other, one cannot calculate the number of atoms in the sample.
Which microscope would be most useful for quickly estimating the number of red blood cells in a patient's blood sample?
compound light
How will identifying if a property is chemical or physical?
A physical property can be observed without changing the sample. Chemical properties requires you to change the sample.
