Calculate the mass of sodium hydroxide in 5.00 dm³ of a 0.125 mol dm‾³ solution [NaOH = 40 g mol]
A. 0.0156 g B. 0.625 g C. 1.00 g D. 25. 0 g Correct Answer: Option D D. 25. 0 g Explanation 1 mole of NaOH per dm³ has a mass of 40g mass of NaOH in 0.125 mole = 0.125 x 40 = 5g mass in 5.00 dm³ of the solution = 5 x 5 =...Which of the following substances increases in mass when heated in air?
A. Sodium chloride B. lodine crystals C. magnesium ribbon D. copper (ll) oxide Correct Answer: Option C C. magnesium ribbonThe gas given off when NH4Cl is heated with an alkali is?
A. H2 B. CI2 C. N2 D. NH3 Correct Answer: Option D D. NH3A major factor considered in selecting a suitable method for preparing a simple salt is its?
A. crystalline form B. melting point C. reactivity with dilute acids D. solubility in water Correct Answer: Option D D. solubility in waterProducts
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