Advertisements
Advertisements
प्रश्न
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
Advertisements
उत्तर
`"concentration" = "mass of solute"/"mass of solute+ mass of solvent"xx100 `
Given, Mass of salt is 2.5 gm and mass of water is 50 gm.
So, total mass of the solution = 50 gm + 2.5 gm = 52.5 gm
Hence, concentration `=2.5/52.5 xx 100 = 4.7%`
APPEARS IN
संबंधित प्रश्न
Define the following term of Atom .
Fill in the blank
All matter is made up of tiny particles called ______
Define matter. Give four examples of matter.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
State two physical properties on the basis of which metals can be distinguished from non-metals.
Give reason why copper metal is used for making electric wires.
Name a metal which is yellow in colour.
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
What is the difference between solutions and colloids ?
What is meant by a solution?
Name the process by which all the dye can be recovered from black ink.
How is cream separated from milk ?
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
Which of the following mixture cannot be separated by using water as the solvent ?
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Solid is an arrangement of particles ______.
Atoms are tiny particles that repel each other when they are squeezed very close.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
