The mass of substance is that measure by means of which the body influences the support. It is measured in kilograms (kg), grams (g), tons (t). To find the mass of substance if its volume, very easily is known.
It is required to you
- To know the volume of this substance and also its density.
Instruction
1. Volume is an ability of a body to contain in itself a certain amount of any material, it is measured in m³, cm³, km³, etc. Therefore for finding of body weight it is required to find only density of its substance.
2. Density - the physical quantity which is defined as the relation of mass of this body to that volume which it occupies. According to this definition, density is measured in kg/m³. From here also the type of a formula for finding of density of any substance follows: p = m/VEtoy the formula should not use often, practically all density of substances are already known and counted. All these data are available in the table of density.
3. Now, having dealt with missing data, it is possible to be accepted to finding of mass of substance. It can be executed by means of a formula: m = p*VPrimer: It is necessary to find the mass of gasoline which volume is 50 m³. Apparently from a statement of the problem. the volume of initial substance is known, it is required to find density. According to the table of density of various substances, density of gasoline is 730 kg/m³. Now it is possible to find the mass of this gasoline so: m = 730*50 = 36500 kg or 36.5 totvt: the mass of gasoline is 36.5 t