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Q. Hypothesis on chlorofluorocarbon?
A hypothesis is a probable explanation for what has been observed. Based on the explanation of ozone thinning and CFC build-up in the chemists Mario Molina, the atmosphere and F. Sherwood Rowland hypothesized that CFCs break in the atmosphere due to the Sun's ultraviolet rays. They additional hypothesized that a chlorine particle produced by the breakdown of CFCs could break down ozone.
1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a
Q. Evaluate Total Solids in Milk? Total solids determination is a common procedure in many manufacturing plants using dairy products. The total solids in milk can be calculat
role of ammonium chloride and ammonium hydroxide in group third of basic radical?
Physical properties of Tri-halides (i) Tri-halides is a sweet smelling colourless liquid. (ii) Tri-halides is heavy liquid. The density of it is 1.485. It boils at 61°C.
Usually we grudgingly accept that syntheses involving activated EAS reactions will unavoidably yield both ortho and para isomers, and this inefficiency is acceptable in exam and ho
Question 1: (i) What are the main physical properties of hydrogen sulphide? (ii) Which occupational group of workers is often exposed to hydrogen sulphide? (iii) O
why we multipyl by 24.52 in formula
Why a covalent bond is directional? Covalent bond is formed as a result of pairing of two electrons in atomic orbitals of two atoms. Bond then must lie along the direction of
Binary phase diagrams of two component systems are usually Two dimensional plots of temperature and composition.
Three-center bonding Example of where the 2c bonding picture is not present is in diborane B2H6. The terminal B-H bonds can be defined in simple 2c terms, but the number of
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