Some Basic Conc...

300 gm of 25% w/w solution of solute A is mixed with 400 gm of 40 (w/w) solution of another solute B. What is the w/w percentage of new mixture.

48 g of Mg contain the same number of atoms as 160 g another mono-atomic element.The atomic mass the element is:

Number of $$g$$ of oxygen in $$32.2\ g\ Na_{2}SO_{4}\ 10H_{2}O$$ is:[$$Mol. w t=322$$ ]

A $$5\%$$ solution of sucrose is isotonic with $$3\%$$ solution of a solute find molecular weight of that solute?

3 g of a solute was dissolved in 9 g of water. Find the percentage mass of solute

The crystalline salt $$Na_{2}SO_{4}.xH_{2}O$$ on heating loses 55.9% of its weight. The formula of the crystalline salt is :

There are two common oxides of Sulphur, one of which contains $$50$$% $${O}_{2}$$ by weight, the other almost exactly $$60$$%. The weights of sulphur which combine with $$1g$$ of $${O}_{2}$$ (Fixed) are in the ratio of:

A sample of oxygen contain $$_{ 8 }^{ 16 }{ O },_{ 8 }^{ 17 }{ O }$$ and $$_{ 8 }^{ 18 }{ O }$$ atoms has average atomic mass $$16.12$$. If mole $$\%$$ of $$_{ 8 }^{ 16 }{ O }$$ is $$90$$, then weight $$\%$$ of $$_{ 8 }^{ 18 }{ O }$$ is 

Iron forms two oxides, in first oxide $$56$$ grams of Iron is found to be combined with $$16$$ gram oxygen and in second oxide $$112$$ gram of Iron is found to be combined with $$48$$ gram oxygen. This data satisfy the law of

Calculate the concentration in $$m/v  \%$$ (in (mg/mL) of KCl solution which contains 0.0245 gm of KCl in 35 mL of solution.