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Sulphur
Kavungya answered the question on March 25, 2019 at 13:08
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Date posted: March 25, 2019. Answers (1)
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How many grams of Sulphur contain 3.0 x 1021 atoms?.
Date posted: March 25, 2019. Answers (1)
- 100cm3 of a gas at r.t.p was cooled to 60cm3. Calculate the new temperature of the gas in 0C if the pressure is kept constant.(Solved)
100cm3 of a gas at r.t.p was cooled to 60cm3. Calculate the new temperature of the gas in 0C if the pressure is kept constant.
Date posted: March 25, 2019. Answers (1)
- Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the...(Solved)
Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the molecular mass of B.
Date posted: March 25, 2019. Answers (1)
- In an experiment, it was found that a mole of a gas occupied 24.0dm3 at 200C and atmospheric pressure. What volume would it occupy at...(Solved)
In an experiment, it was found that a mole of a gas occupied 24.0dm3 at 200C and atmospheric pressure. What volume would it occupy at S.T.P?
Date posted: March 25, 2019. Answers (1)
- Two gases, A and B have densities of 0.18gdm-3 and 2.90gdm-3 respectively. If they diffuse under the same conditions, what are their relative rates of...(Solved)
Two gases, A and B have densities of 0.18gdm-3 and 2.90gdm-3 respectively. If they diffuse under the same conditions, what are their relative rates of diffusion.
Date posted: March 25, 2019. Answers (1)
- At 270C, nitrogen has a volume of 650cm3 under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure...(Solved)
At 270C, nitrogen has a volume of 650cm3 under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure of 760mmHg?.
Date posted: March 25, 2019. Answers (1)
- Explain why dilute Sulphuric acid is a stronger acid than the concentrated one.(Solved)
Explain why dilute Sulphuric acid is a stronger acid than the concentrated one.
Date posted: March 25, 2019. Answers (1)
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What do you understand by the term solubility of a solute in a solvent.
Date posted: March 25, 2019. Answers (1)
- The graph below shows the changes in PH as sodium hydroxide was added to a solution of hydrochloric acid.
(a) Explain what happens at B.
(b) What...(Solved)
The graph below shows the changes in PH as sodium hydroxide was added to a solution of hydrochloric acid.
(a) Explain what happens at B.
(b) What would be the colour of:
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(ii) Phenolphthalein at C?
Date posted: March 25, 2019. Answers (1)
- A weak base containing a few drops of methyl orange indicator was titrated with a strong acid and the curve below was obtained.
a)What will be...(Solved)
A weak base containing a few drops of methyl orange indicator was titrated with a strong acid and the curve below was obtained.
a)What will be the colour of the indicator at
(i) A (ii) B
b)Explain why the PH value decreases.
Date posted: March 25, 2019. Answers (1)
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List five methods used to prepare salts in the laboratory regardless of whether the salts are soluble or insoluble.
Date posted: March 25, 2019. Answers (1)
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Date posted: March 25, 2019. Answers (1)
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Date posted: March 25, 2019. Answers (1)