The density of a substance is 0.5gcm−3. The substance _______.
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Q2
What is the pH range of an acidic substance?
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Q3
(a) What is the difference between the density and relative density of a substance?a
(b) If the relative density of a substance is 7.1, what will be its density in SI units?
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Q4
Which of the following materials fall in the category of pure substance
a. Ice
b. Milk
c. Iron
d. Hydrochloric acid
e. Calcium oxide
f. Mercury
g. Brick
h. Wood
I. Air
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Q5
An organic compound of formula C3H7N was analysed for nitrogen by dumas method calculate the volume of N2 gas evolved at NTP from 2g of substance