100 - 25 = 75 cm3
john3 answered the question on October 4, 2017 at 12:18
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Name two ores from which copper is extracted
(Solved)
Name two ores from which copper is extracted
Date posted:
October 4, 2017
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Answers (1)
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A certain mass of gas occupies 146 dm^3 at 291 K and 98.31 kPa. What will be...
(Solved)
A certain mass of gas occupies 146 dm^3 at 291 K and 98.31 kPa. What will be its temperature if its volume is reduced to 133 dm^3 at 101.325 kPa?
Date posted:
October 4, 2017
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Answers (1)
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A gas jar full gas V was opened in air. Explain the observation made by use of an equation.
(Solved)
A gas jar full gas V was opened in air. Explain the observation made by use of an equation.
Date posted:
October 3, 2017
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Answers (1)
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what is evaporation?
(Solved)
paper two.
Date posted:
October 2, 2017
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Answers (1)
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What is boiling?
(Solved)
What is boiling?
Date posted:
October 2, 2017
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Answers (1)
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Define the term saturated solution
(Solved)
What is a saturated solution?
Date posted:
October 2, 2017
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Answers (1)
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Give a reason why nitric (V) acid is stored in dark brown bottles.
(Solved)
Give a reason why nitric (V) acid is stored in dark brown bottles.
Date posted:
September 30, 2017
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Answers (1)
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State one use of sodium carbonate
(Solved)
State one use of sodium carbonate
Date posted:
September 30, 2017
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Answers (1)
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What is meant by the term dynamic equilibrium?
(Solved)
What is meant by the term dynamic equilibrium?
Date posted:
September 29, 2017
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Answers (1)
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a) Name the following processes (i) When anhydrous calcium chloride was left in an open beaker
overnight a solution was formed.(ii) When sodium carbonate decahydrate crystals...
(Solved)
a) Name the following processes:
i) When anhydrous calcium chloride was left in an open beaker
overnight a solution was formed.
ii) When sodium carbonate decahydrate crystals are left in an open beaker for some days it turned
into powder.
Date posted:
September 29, 2017
.
Answers (1)
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Explain why the error in the Dalton's theory has not affected its validity?
(Solved)
Explain why the error in the Dalton's theory has not affected its validity?
Date posted:
September 29, 2017
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Answers (1)
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Explain why a substance conducts electric current when in molten state and not in solid state.
(Solved)
Explain why a substance conducts electric current when in molten state and not in solid state.
Date posted:
September 28, 2017
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Answers (1)
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Giving a reason, state what would be observed if concentrated hydrochloric acid is added
drop wise to a solution of Bismuth chloride.
(Solved)
Giving a reason, state what would be observed if concentrated hydrochloric acid is added
drop wise to a solution of Bismuth chloride.
Date posted:
September 28, 2017
.
Answers (1)
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Name the following processes (i) When anhydrous calcium chloride was left in an open beaker overnight a solution was formed (ii) When sodium carbonate decahydrate crystals are...
(Solved)
Name the following processes
i) When anhydrous calcium chloride was left in an open beaker
overnight a solution was formed.
ii) When sodium carbonate decahydrate crystals are left in an open beaker for some days it turned
into powder.
Date posted:
September 28, 2017
.
Answers (1)
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Briefly explain how the calcium is separated from sodium in the down’s cell.
(Solved)
Briefly explain how the calcium is separated from sodium in the down’s cell.
Date posted:
September 28, 2017
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Answers (1)
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List the main uses of Sulphur
(Solved)
List the main uses of Sulphur
Date posted:
September 27, 2017
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Answers (1)
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List and explain the physical properties of Sulphur
(Solved)
List and explain the physical properties of Sulphur
Date posted:
September 27, 2017
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Answers (1)
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Name the two allotropes of sulphur
(Solved)
Name the two allotropes of sulphur
Date posted:
September 26, 2017
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Answers (1)
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State three uses of hydrogen nitrate
(Solved)
State three uses of hydrogen nitrate
Date posted:
September 26, 2017
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Answers (1)
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Define the term catenation?
(Solved)
Define the term catenation?
Date posted:
September 26, 2017
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Answers (1)