An element X has two isotopes, 2010X and 2010X, present in the ratio 1:3. The…
An element X has two isotopes, 2010X and 2010X, present in the ratio 1:3. The relative atomic mass…
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Which of the following bonds exist in crystalline ammonium chloride (NH4Cl)?
Which of the following bonds exist in crystalline ammonium chloride (NH4Cl)? A. Ionic and covalent B. Ionic and…
0.07g of a hydride of carbon occupies 56.0cm3 at S.T.P. when vaporized and contains 14.29%…
0.07g of a hydride of carbon occupies 56.0cm3 at S.T.P. when vaporized and contains 14.29% by mass of…
The pressure on 100 cm3 of oxygen gas at 35°C is 750mm of Hg.What would…
The pressure on 100 cm3 of oxygen gas at 35°C is 750mm of Hg.What would be the volume…
A mixture contains 20cm3 of hydrogen, 35cm3 of oxygen, 15cm3 of carbon monoxide and 10cm3…
A mixture contains 20cm3 of hydrogen, 35cm3 of oxygen, 15cm3 of carbon monoxide and 10cm3 of nitrogen at…
The general formula of an alkyl halide (which represent the halide) is?
The general formula of an alkyl halide (which represent the halide) is? A. CnH2n – 2X B. CnH2n…
An efflorescent compound is a substance that?
An efflorescent compound is a substance that? A. absorbs water froom the air without dissolving in it B.…
The scale formation in a kinetic used for boiling water is caused by the presence…
The scale formation in a kinetic used for boiling water is caused by the presence in water of?…
What happens when the nitrates of potassium, calcium, zinc and copper are separately heated?
What happens when the nitrates of potassium, calcium, zinc and copper are separately heated? A. All the nitrate…
4g each of aluminium foil and aluminium powder were introduced respectively into flasks P and…
4g each of aluminium foil and aluminium powder were introduced respectively into flasks P and Q. Flask P…