Answer:
6.022 × 10²² atoms
Explanation:
Generally 1 mol of any element contains 6.02×10^23 atoms. The number 6.022 × 10²³ is known as Avogadro's number.
Mass of Aluminium = 2.70g
Molar mass = 27g/mol
Number of moles = Mass / Molar mass = 2.70 / 27 = 0.1 mol
1 mol = 6.022 × 10²³
0.1 mol = x
x = 6.022 × 10²³ * 0.1 = 6.022 × 10²² atoms
Answer:
diffusion: the movement of molecules in a solution from an area of
higher concentration to an area of lower concentration
I don't know if it is organized by reactivity
it is organized by families
it is organized by atomic number
it is NOT organized by atomic mass
it is organized by periods and groups
The unit used for measuring heart rate is BPS, or beats per minute. Good luck!
Answer: The molarity of the solution comes out to be 19.19 M.
Explanation:
We are given:
99% m/m . This means that 99 grams of sulfuric acid is present in 100 grams of solution.
Density of solution = 1.9 g/mL
To calculate the volume of the solution, we use the equation:
Density of solution = 1.9 g/mL
Mass of solution = 100 g
Putting values in above equation, we get:
To calculate the molarity of a solution, we use the equation:
Given mass of sulfuric acid = 99 g
Molar mass of sulfuric acid = 98g/mol
Volume of solution = 52.63 mL
Putting values in above equation, we get:
Hence, the molarity of the solution comes out to be 19.19 M.
