Unit ppm stands for parts per million. in terms of mass, ppm is equivalent to mg/kg.
since 1 kg is 10⁻⁶ mg, 1 kg is equivalent to million mg.
therefore mg/kg is also ppm.
there are 1.3 g of Ca ions in 3100 kg
if 3100 kg contains - 1.3 g of Ca
then 1 kg contains - 1.3 g / 3100 kg
then Ca ions - 0.42 x 10⁻³ g/kg
Ca ion concentration - 0.42 mg/kg
therefore Ca ion concentration is 0.42 ppm
Answer:
Fertilisers
And also organic compounds
Answer:
3
Explanation:
Significant figures are the number of digits in a value, often a measurement, that to the degree of accuracy of the value. All non-zero numbers ARE significant. ...
Zeros between two non-zero digits ARE significant. ...
Leading zeros are NOT significant. ...
Trailing zeros to the right of the decimal are significant. ...
Trailing zeros in a whole number with the decimal shown ARE significant.contributes
Chlorine + aluminium bromide --> aluminium chloride + bromine
Chlorine replaces bromide in AlBr3
3Cl2 + 2AlBr3 ---> 2AlCl3 + 3Br2
Hope it helped!