Yes the number of moles = the number of grams in a given sample / the molecular mass of the substance.
Ex. to convert 50 grams of nitrogen to # of moles of nitrogen, you divide 50g by 14.01g (the molecular mass) and you have 3.57 mol Nitrogen
Mole percent vs volume percent is a simple comparison to make. Mole percent is equivalent to moles of substance/moles of total x 100. Volume percent is volume of substance/volume of total x 100.
Percent by mass over volume is a measurement that expresses the mass of a substance in a given volume as a percentage. It is calculated by dividing the mass of the substance by the volume of the solution and then multiplying by 100. This measurement is commonly used in chemistry to quantify the concentration of a solute in a solution.
Time squared over distance. No, it is not "Density". Density is mass divided by VOLUME. Weight is the force of gravity acting on the mass. force = mass * acceleration. Thus, mass/force = 1/acceleration, or, in generic units, time squared over distance. Don't believe every game show answer you hear.
The density of the piece of lead is 10.89 g/mL. This is calculated by dividing the mass (49.01g) by the volume (4.5mL).
When volume increases while mass remains constant, density decreases because the same amount of mass is spread over a larger space. The relationship between density, mass, and volume is given by the formula density = mass/volume, so an increase in volume without a corresponding increase in mass leads to a decrease in density.
because the density is defined to be the mass over the volume. the slope is just a math term used to define such a relation.
Mole percent vs volume percent is a simple comparison to make. Mole percent is equivalent to moles of substance/moles of total x 100. Volume percent is volume of substance/volume of total x 100.
mass over volume
DENSiTY!
Percent by mass over volume is a measurement that expresses the mass of a substance in a given volume as a percentage. It is calculated by dividing the mass of the substance by the volume of the solution and then multiplying by 100. This measurement is commonly used in chemistry to quantify the concentration of a solute in a solution.
Use the ideal gas law. PV=nRT where P=Pressure, V=Volume, n=amount (mol), R is the constant (since you have mmHg it would be 62.4) and T=temperature (convert to Kelvin). the eqation for density is mass over volume, so use the ideal gas law to solve for volume. Then calculate mass over volume.
Mass over Volume+Density, so mass and volume.
Density=Mass/Volume (That is, Density equals to Mass divided by the Volume over the object)
density = mass/volume just like determining density the answer would be the same and if your an adult asking you got told by a 6th grade What..... ohh yea and your probably wondering why im smarter arent you... ARENT YA ):^(
The formula to calculate density is: Density = mass / volume. You simply divide the mass of an object by its volume to find its density. Density is a measure of how much mass is contained in a given volume.
Density equals mass over volume. Set up the equation and solve for volume.
To find the mass from volume and density, you can use the formula: mass = volume x density. Simply multiply the volume by the density value to calculate the mass. Make sure to use consistent units for volume and density for accurate results.