What is the formula of sodium gallate if gallium (Ga)shows an oxidation number of +…
What is the formula of sodium gallate if gallium (Ga)shows an oxidation number of + 3? A. NaGaO3…
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X + Y = Z is an equilibrium reaction. The addition of a catalyst?
X + Y = Z is an equilibrium reaction. The addition of a catalyst? A. increase the amount…
Brass is an alloy containing copper and?
Brass is an alloy containing copper and? A. zinc B. tin C. aluminium D. silver E. lead Correct…
The number of grammes of potassium hydroxide in 250cm3 of one molar solution is? (K…
The number of grammes of potassium hydroxide in 250cm3 of one molar solution is? (K = 39, O…
0.16g of methane when burnt raises the temperature of 100g of water by 40°C. What…
0.16g of methane when burnt raises the temperature of 100g of water by 40°C. What is the of…
Which of the following processes NOT lead to a chemical change?
Which of the following processes NOT lead to a chemical change? A. Strirring iron in sulphur (IV) acid…
Which of the following combinations of conditions may increase the rate of a chemical reaction?
Which of the following combinations of conditions may increase the rate of a chemical reaction? A. Decrease in…
Which of the following is NOT a redox reaction?
Which of the following is NOT a redox reaction? A. 2HNO2 + 2HI → 2H2O + 2NO +…
How many grams of methylacetylene (propyne) CH3 — C Ξ CH will completely discharge the…
How many grams of methylacetylene (propyne) CH3 — C Ξ CH will completely discharge the colour of 8g…
What weight of sodium hydroxide is required to make 500 cm3 of 0.2 M solution?…
What weight of sodium hydroxide is required to make 500 cm3 of 0.2 M solution? (Na = 23,…