Washing Soda is a common household chemical with many industrial uses. In Class 10 Chemistry (Acids, Bases, and Salts chapter), it is an important topic.
Chemical Name: Sodium Carbonate.
Formula: Na₂CO₃·10H₂O.
Nature: Alkaline (basic) salt.
Main Use: Water softener and cleaning agent.
Washing soda is sodium carbonate (Na₂CO₃·10H₂O). It is alkaline in nature and is used as a water softener in laundry, in manufacturing glass and paper, and for removing grease and stains.
Oxidation Number of Nitrogen in NO2
Learn how to calculate the oxidation number (or oxidation state) of Nitrogen in NO2 (Nitrogen Dioxide). The correct answer is +4.
Normality — Definition, Formula, and Relation to Molarity
Normality definition in chemistry: gram equivalents of solute per litre of solution. Formula N = Molarity × n-factor. Examples with acid-base and redox reactions.
Nuclear Charge — Atomic Number, Zeff, and Shielding
Nuclear charge = Z × e (protons × charge). Effective nuclear charge Zeff = Z − S. Learn shielding effect, Slater's rules, and periodic trends. Class 11 chemistry.
Number of Neutrons in 1.7g of Ammonia
Number of neutrons in 1.7g of ammonia (NH₃) = 4.215 × 10²³. Calculation: 0.1 mol NH₃ × 6.022 × 10²² molecules × 7 neutrons per molecule. Step-by-step solution.
Number of Protons in Nickel — Atomic Structure Explained
Number of protons in nickel is 28. Nickel (Ni) has atomic number 28, meaning every nickel atom contains exactly 28 protons in its nucleus.
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