Na = 23
S= 32
O= 16
Therefore : Na2SO4 = (23×2) +32+(16×4) =
46+32+64=142g/mol
To determine velocity from momentum, you can use the formula: momentum mass x velocity. By rearranging the formula, you can solve for velocity by dividing momentum by mass. This will give you the velocity of an object based on its momentum and mass.
You can determine mass using momentum and velocity by using the formula: momentum = mass x velocity. Rearrange the formula to solve for mass as mass = momentum/velocity. Plug in the values for momentum and velocity to calculate the mass.
To determine velocity using momentum, you can use the formula: momentum mass x velocity. Rearrange the formula to solve for velocity: velocity momentum / mass. By dividing the momentum by the mass of the object, you can calculate its velocity.
To determine the velocity of the center of mass of a system of particles, you can use the formula: velocity of center of mass (total momentum of the system) / (total mass of the system). This formula takes into account the individual velocities and masses of all the particles in the system.
To determine the friction force when given the mass and acceleration of an object, you can use the formula: friction force mass x acceleration. This formula helps calculate the force resisting the motion of the object due to friction.
The formula is Na2SO3 , because Na have 1 valence electrone and SO3 is a polyatomic with 2 valence electrons so u cross multiply Na1 * SO3(2) =Na2SO3
Na2SO3.
The empirical formula for sodium sulfite is Na2SO3. This formula represents the simplest whole number ratio of atoms of each element in the compound.
the empirical formula and the molar mass
Sodium sulfide: Na2S Sodium sulfite: Na2SO3 Sodium sulfate: Na2SO4
To determine the molar mass of an empirical formula, you need to calculate the sum of the atomic masses of all the elements in the formula. This can be done by multiplying the atomic mass of each element by the number of atoms of that element in the formula, and then adding up all the results.
molar mass of unknown/molar mass of empirial = # of empirical units in the molecular formula. Example: empirical formula is CH2O with a molar mass of 30. If the molar mass of the unknown is 180, then 180/30 = 6 and molecular formula will be C6H12O6
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.
The actual mass must be divided by the empirical mass. This was derived from the following equation: (subscript)(empirical formula) = (molecular formula) subscript = (molecular formula)/(empirical formula)
To determine velocity from momentum, you can use the formula: momentum mass x velocity. By rearranging the formula, you can solve for velocity by dividing momentum by mass. This will give you the velocity of an object based on its momentum and mass.
You can determine mass using momentum and velocity by using the formula: momentum = mass x velocity. Rearrange the formula to solve for mass as mass = momentum/velocity. Plug in the values for momentum and velocity to calculate the mass.
The density or some other information must be given that allow you to find the molar mass. Calculate the empirical formula mass. Divide molar mass by empirical formula mass. This answer is multiplied by all subscripts of the empirical formula to get the molecular formula.