List of top Chemistry Questions on Laws of Chemical Combinations

Find the number of atoms present in \(11.2\ \text{L}\) of nitrogen gas at STP.
How many molecules of \(CO_2(g)\) are obtained on reaction of 24 grams of methane with 4 moles of oxygen?
The number of molecules of ethane (molar mass $=30$) present in 3 g of pure ethane is
Calculate the number of carbon atoms present in \(0.35\) mole of glucose \((C_6H_{12}O_6)\).
What is the number of hydrogen atoms present in 5.4 g of urea?
Which of the following has the highest molar mass? \((\text{Atomic masses: N}=14,\ \text{O}=16,\ \text{Ag}=108,\ \text{Pb}=208,\ \text{Na}=23,\ \text{H}=1,\ \text{K}=39)\)
What is the number of hydrogen atoms present in 5.4 g of urea?
How many moles of methane are required to produce $11\ \text{g}$ $CO_{2(g)}$ after combustion? (Molar mass of $CO_{2}=44\ \text{g mol}^{-1}$)
What is the number of hydrogen atoms present in 5.4 g of urea?
A solution contains \(9.8 \, \text{g}\) of \(H_2SO_4\). How much NaOH is required to completely neutralize it? (molar mass of NaOH = \(40 \, \text{g mol}^{-1}\))
Which law is illustrated by compounds H$_2$O and H$_2$O$_2$ formed from two different elements, H and O?
Which of the following pairs of compounds cannot demonstrate the law of multiple proportions?
"A given compound always contains the same proportion of elements" is a statement of
What is the ratio of mass of nitrogen that combines with 16 parts by weight of oxygen in $\text{N}_2\text{O}, \text{NO}, \text{NO}_2$ ?
What is the percentage by mass of oxygen in water, if percentage by mass of hydrogen is \(11.1\%\) ?
What is the mass in gram of 1 atom of an element if its atomic mass is 10 u?
Which of the following pair of compounds demonstrates the law of multiple proportions?
\(PCl_5\) is well known, but \(NCl_5\) is not. Because,
Find which of the following compound can have mass ratio of C:H:O as 6:1:24
Which one of the following will have the largest number of atoms?
An organic compound contains \(24%\) carbon, \(4%\) hydrogen and remaining chlorine. Its empirical formula is
For the chemical reaction \(N_2(g)+ 3H_2(g)= 2NH_3(g)\) the correct option is :
10 g of MgCO$_3$ decomposes on heating to 0.1 mole CO$_2$ and 4 g MgO. The percent purity of MgCO$_3$ is
The compound Na$_2$CO$_3 \cdot x$H$_2$O has 50 % H$_2$O by mass. The value of $x$ is
Find which of the following compound can have mass ratio of C:H:O as 6:1:24