Complete the given equation and mention whether heat is absorbed or evolved during the chemical reaction. NaOH + HCl ……………. + …………….

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Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

What best discribes the relationship between wavelength and frequency in a electromagnetic wave