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To determine the molar mass of an element one must know the elements what?
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∙ 13y ago
penis
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∙ 13y ago
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How do you know how reactive an element is?
An elements reactivity is based on how many electrons are in the valence shell. All elements try to get 8 electrons in there valence shell except hydrogen which can only have two. An element reacts with other elements by gaining or giving an electron and that process of giving or gaining causes the reaction. Elements on the far left are most reactive because they only have one electron.
How do you calculate molar mass?
You multiply the molar mass of the component element by how many of that atom appear in one molecule. You add all the elements' masses together to get the molar mass of the molecule. For example, SO2 1 * mass of sulfur =32.1 g 2 * mass of oxygen =32.0 g 32.1 g + 32.0 g = 64.1 g
Which element is more likely to combine with other elements calcium or xenon how do you know?
Calcium. I know because I studied chemistry.
When looking at a periodic table of elements what do you know by knowing in which column an element appears?
Chemical elements in the same group have similar chemical properties.
What critical piece of information must be known in order to determine the molecular formula?
you must know the molar mass! you need to get the empirical formula first too.
If you know the molar masses of the reactants in a chemical reaction can you determine the molar masses of the products?
If you know know the molar masses of the reactants in a chemical reaction you can determine the molar masses of the products because the combined molar masses of the reactants equals the combined molar masses of the products.
How would we know how many moles are in a certain element?
number of moles = mass of the element/molar mass of the element
How do you find the molar mass of compounds like water?
The molar mass is the mass of one mole of a substance in g/mol. In order to determine the molar mass, you must know the chemical formula and have access to a periodic table. Let's use water as an example. The chemical formula for water is H2O. To find the molar mass, multiply the atomic weight on the periodic table in grams/mol for each element times the subscript for the element, and add the molar masses. H: 2 x 1.00794g/mol = 2.01588g/mol O: 1 x 15.9994g/mol = 15.9994g/mol ------------------------------------------------ Molar mass = 18.0153g/mol
How many elements are in a atom?
i don't know about 2
How do you know how many elements are in H?
"H" or Hydrogen is an element, there are no other elements in it because all elements are pure substances.
How do you know if an element is organic or inorganic?
All elements are considered as inorganic
How do you know how reactive an element is?
An elements reactivity is based on how many electrons are in the valence shell. All elements try to get 8 electrons in there valence shell except hydrogen which can only have two. An element reacts with other elements by gaining or giving an electron and that process of giving or gaining causes the reaction. Elements on the far left are most reactive because they only have one electron.
Why must you know both how many protons and how many neutrons an element has in order to fully identify it?
The number of protons determine what element it is, the number of neutrons determine what isotope it is.
What is the six element of the periodic table of elements?
Family six on the Periodic Table of elements is also know as Chalcogens
Does copper has elements?
i dont even know can someone help me? :[
How do you determine the actual mass of an element?
you dont. if you dont know then go find out
How many atoms are in 70.620 g of rhenium?
To determine the number of atoms in a given mass of an element, you need to know the molar mass of that element. The molar mass of rhenium (Re) is 186.207 g/mol. To find the number of atoms in 70.620 g of rhenium, divide the given mass by the molar mass, and then multiply by Avogadro's number (6.022 x 10^23). This gives approximately 1.590 x 10^23 atoms of rhenium.
