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If you do a mole ratio wrong it can give you false answers. The molar ratio will assume a place of central importance in solving stoichiometry problems. The sources for these ratios are the coefficients of a balanced equation. We will look at what a molar ratio is and then a brief word on how to recognize which ratio to use in a problem.
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Because the mole ratio is derived from the balanced equation, if a scientist knows the equation that describes a reaction, and the atomic weights of the substances involved, he or she can determine the amount of each substance needed.
Source: (e2020)
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoBecause the mole ratio is derived from the balanced equation, if a scientist knows the equation that describes a reaction, and the atomic weights of the substances involved, he or she can determine the amount of each substance needed.
Source: (e2020)
Wiki User
∙ 14y agodude, atoms and molecules are this much small that they can't even be seen with powerful telescopes. hence it's quite difficult to study them and show their amounts
when they are used. therefore, moles are used since teey are a group of 6.022 *10 raise to the power 23 times
by rahul
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Convert grams to moles?
To convert grams to moles, you need to know the molar mass of the substance. Divide the given mass in grams by the molar mass to find the number of moles. This calculation is done using the formula: moles = grams / molar mass.
Moles of As in Na2HAsO4.7H2O?
To find the moles of As in Na2HAsO4.7H2O, you would first calculate the molar mass of Na2HAsO4.7H2O, then divide the molar mass of As by the molar mass of Na2HAsO4.7H2O to find the moles of As.
The number of moles of oxygen in the reaction vessel is?
To calculate the number of moles of oxygen in the reaction vessel, you need to know the amount of oxygen in grams and its molar mass. Then divide the mass of oxygen by its molar mass to obtain the number of moles. The formula to calculate the number of moles is: moles = mass / molar mass.
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.
How is the mass compound determined from the number of moles?
To determine the molar mass of a compound from the number of moles, you can use the formula: mass = number of moles * molar mass. First, find the molar mass of the compound by adding up the atomic masses of each element present. Then, multiply the number of moles by the molar mass to find the mass of the compound.
Convert grams to moles?
To convert grams to moles, you need to know the molar mass of the substance. Divide the given mass in grams by the molar mass to find the number of moles. This calculation is done using the formula: moles = grams / molar mass.
How is the number of moles of an element determined from the known mass?
To determine the number of moles of an element from its known mass, you can use the formula: moles = mass / molar mass. First, find the molar mass of the element from the periodic table. Then, divide the given mass of the element by its molar mass to find the number of moles.
How do you find moles of hydrogen?
To find the moles of hydrogen, you can divide the given mass of hydrogen by its molar mass. The molar mass of hydrogen is approximately 1 g/mol. So, moles of hydrogen = mass of hydrogen (in grams) / molar mass of hydrogen (approximately 1 g/mol).
Moles of As in Na2HAsO4.7H2O?
To find the moles of As in Na2HAsO4.7H2O, you would first calculate the molar mass of Na2HAsO4.7H2O, then divide the molar mass of As by the molar mass of Na2HAsO4.7H2O to find the moles of As.
How many moles are in 0.525g of AgCl?
To find the number of moles in 0.525g of AgCl, you need to divide the mass by the molar mass of AgCl. The molar mass of AgCl is 143.32 g/mol. moles = mass / molar mass moles = 0.525g / 143.32 g/mol moles ≈ 0.0037 mol
The number of moles of oxygen in the reaction vessel is?
To calculate the number of moles of oxygen in the reaction vessel, you need to know the amount of oxygen in grams and its molar mass. Then divide the mass of oxygen by its molar mass to obtain the number of moles. The formula to calculate the number of moles is: moles = mass / molar mass.
Mass of 3 moles of ammonia?
Molar mass of ammonia = (14.01 + 3.03) (Molar mass of nitrogen + 3 times molar mass of hydrogen, as chemical formula of ammonia is NH3). Molar mass= 17.04 Molar mass x moles = mass 17.04 x 3 = 51.12 Mass of 3 moles of ammonia is 51.12g.
How is the number of moles of an element determined froma known mass?
To determine the number of moles of an element from a known mass, you use the element's molar mass (grams per mole). Simply divide the given mass of the element by its molar mass to calculate the number of moles. This relationship is described by the formula: moles = mass (g) / molar mass (g/mol).
What is the molar mass of a substance if 0.03 moles of it weighs 1.32g?
The molar mass of the substance can be calculated by dividing the mass of the sample by the number of moles. In this case, the molar mass is (1.32g / 0.03 moles) = 44 g/mol.
How many moles are in 89.0 grams of aluminum?
all you have to do to fine the moles of any element is divide the given grams by the molar mass (which you can find on a periodic table of elements) Likewise, if you need to find the grams, just multiply the number of moles by molar mass. moles = grams/molar mass grams = moles x molar mass your equation should look like this: moles = 89.0 / 17.0 moles = .471
How is the number of moles determined from a known mass?
Number of moles = Total mass/Molar mass
How many moles of NaCl?
To determine the number of moles of NaCl, you need to know the mass of NaCl you have and the molar mass of NaCl (58.44 g/mol). You can then use the formula moles = mass / molar mass to calculate the number of moles of NaCl.
