Mass
If you know an object's weight, you can calculate its mass from the formula m = F/a where m is mass in kilograms and F is Force in newtons, and a is the acceleration (one can use the acceleration of Earth's gravity, which is 9.81 m/s2 ). The Kilogram is SI unit for mass. It is a unit that can be converted to a weight (any mass applied against a surface that is experiencing acceleration in the direction opposite the application of the mass object to the said surface), in USA. pounds (lbs) i.e. 1 lb = 2.2 kg, where it is understood that the kg in question is being accelerated. The Mass of an object, as such, can be measured equally in gravity here on earth, and in space where there is little gravity, by a horizontal spring balance, while the weight of said object varies depending upon which planet you are standing, using a vertical spring balance. The 'weight' of an object generates a Force against a surface, in an acceleration field, such as gravity. The kilogram is the measure of matter's mass. The mass standard is a simple cylinder of a specific volume, made of an alloy of platinum and iridium.
The formula mass of a compound that contains the element would be a larger number than the mass number of the individual element. The individual element would simply be the mass of just that one atom, where as the compound would be the mass of that atom plus the other masses of the other atoms that make up the compound. ex. Oxygen-O has a mass number of about 16 grams. Water-H2O has a formula mass of 2 x mass of Hydrogen-H (about 1) + the mass of Oxygen-O 16 = 18 grams. A formula mass of 18 g is more than a mass number of 16 g.
To determine the number of moles in a substance, you can use the formula: moles mass / molar mass. Simply divide the mass of the substance by its molar mass to find the number of moles.
To determine the number of formula units in a salt crystal, you need to know the molar mass of the salt. Once you know the molar mass, you can use it to calculate the number of moles present in the crystal, and then convert that to the number of formula units using Avogadro's number, which is 6.022 x 10^23 formula units/mol.
molar mass over grams of elementThe above answer is somewhat correct. In order to find the molecular formula when given the empirical formula, you must first find the molar mass of the empirical formula.MOLAR MASS# atoms element A x Atomic Mass element A (Periodic Table) = mass A# atoms element B x atomic mass element B (periodic table) = mass B... etc.Add up all of the mass values found above and you have the molar mass.Then, after you have found the empirical formula's molar mass, you divide the molar mass of the molecular formula by the empirical formula's molar mass (solving for n).MOLECULAR FORMULA EQUATION: N (Empirical formula) (read as N times empirical formula) where:N = Molar mass substance---- Molar Mass emp. form.
To determine the number of moles in a substance based on its mass, you can use the formula: moles mass (in grams) / molar mass (in grams per mole). This formula helps you calculate the amount of substance in moles by dividing the mass of the substance by its molar mass.
density = mass / volume Solving for mass: mass = density x volume Solving for volume: volume = mass / density
You use the formula: F = ma, or force = mass x acceleration. Solving for mass: m = F/a.You use the formula: F = ma, or force = mass x acceleration. Solving for mass: m = F/a.You use the formula: F = ma, or force = mass x acceleration. Solving for mass: m = F/a.You use the formula: F = ma, or force = mass x acceleration. Solving for mass: m = F/a.
density = mass/volume
by having a bean balance or by solving through mass solution Marjorie Manalo
Number of moles = Mass of the sample in g/Molar mass in g
Molar mass is a whole number multiple of the Empirical formula mass
number of electrons
number of electrons
The formula mass of a compound that contains the element would be a larger number than the mass number of the individual element. The individual element would simply be the mass of just that one atom, where as the compound would be the mass of that atom plus the other masses of the other atoms that make up the compound. ex. Oxygen-O has a mass number of about 16 grams. Water-H2O has a formula mass of 2 x mass of Hydrogen-H (about 1) + the mass of Oxygen-O 16 = 18 grams. A formula mass of 18 g is more than a mass number of 16 g.
By subtracting the mass number and the atomic number, the number of neutrons can be calculated.
To determine the number of moles in a substance, you can use the formula: moles mass / molar mass. Simply divide the mass of the substance by its molar mass to find the number of moles.
molar mass over grams of elementThe above answer is somewhat correct. In order to find the molecular formula when given the empirical formula, you must first find the molar mass of the empirical formula.MOLAR MASS# atoms element A x Atomic Mass element A (Periodic Table) = mass A# atoms element B x atomic mass element B (periodic table) = mass B... etc.Add up all of the mass values found above and you have the molar mass.Then, after you have found the empirical formula's molar mass, you divide the molar mass of the molecular formula by the empirical formula's molar mass (solving for n).MOLECULAR FORMULA EQUATION: N (Empirical formula) (read as N times empirical formula) where:N = Molar mass substance---- Molar Mass emp. form.