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DINESH PUBLICATION-ATOMS AND MOLECULES-LONG ANSWER QUESTIONS
- Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercur...
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- The mass of one steel screw is 4.11 g. Find the mass of the of one mol...
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- A sample of vitamin C is known to contain 2.58 xx 10^(24) oxygen atoms...
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- Raunak took 5 moles of carbon atoms in a container and Krish also took...
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- Fill in the missing data in the given table
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- The visible universe is estimated to contain 10^(22) stars. How many m...
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- What is the SI prefix for each of the following multiples and submulti...
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- Express each of the following in kilograms a) 5.84 xx 10^(-3)mg b)...
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- Compute the difference in masses of 10^(3) moles of each of magnesium ...
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- Which has more number of atoms? 100g of N(2) or 100g of NH(3)
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- Compute the number of ions present in 5.85g of sodium chloride.
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- A gold sample contains 90% of gold and the rest copper. How many atoms...
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- What are ionic and molecular compounds? Give exmples.
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- Compute the difference in masses of one mole each of aluminium atoms a...
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- A silver ornament of mass 'm' gram is polished with gold equivalent to...
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- A sample of ethane (C(2)H(6)) gas has the same mass a 1.5 xx 10^(20) m...
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- Fill in the blanks. a) In a chemical reaction, the sum of the masses...
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- Complete the followiing crossword puzzle by using the nameof the chemi...
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- Write the formulae for the following and calculate the molecular mass ...
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- In photosynthesis, 6 molecules of carbon combine with an equal number ...
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