grade 10 chemistry examples

Assuming aluminium (At mass = 27) has a density of 2.7 g cm - 3 and its unit cell has an edge of 400 pm, what is the nature of the crystal lattice for the meta..

56 ml of carbon dioxide has a mass at 0.11 g at STP. What is the molar mass of the carbon dioxi..

: With the same number of carbon atoms, it is possible to have different arrangement of atoms and therefore entirely different compounds. With five carbon atoms, it is possible to have three isomers; with ten carbon atoms it is possible to have 75 isomers and with 60 carbon atoms over..

Aluminothermy is also used for welding broken iron rails...

One mole of hydrogen atoms = 6.023 x 10 2 3 atoms of hydrogen One mole of hydrogen molecules = 6.023 x 10 2 3 molecule of hydrogen One mole of electrons = 6.023 x 10 2 3 electrons One mole of sodium ions (Na + ) = 6.023 x 10 2 3 Na + ions It can be ..

Both aldehydes and ketones have the general formula C n H 2 n O. The functional group of the aldehyde -CHO can occur only at the end of the chain. But, in the case of ketones (>C=O), it cannot occur at the end of the chain as each of the two free valencies is attached to a carbon at..

Borax occurs naturally as tincal (contains about 55% borax) in certain inland lakes of India, Tibet and California (U.S.A.). ..

The chemistry of seawater is very complex. Many multistep equilibrium operate simultaneously. A sequence of chemical reactions following the weathering of the igneous rock is given below: Igneous rocks consist of aluminosilicates of calcium, potassium, sodium etc. Rainwater containing som..

In the Haber's process nitrogen and hydrogen combine to form ammonia, according to the following equation: 200 litres of nitrogen is mixed with 1000 litres of hydrogen. Assuming all the nitrogen is used up, calculate the volume of ammonia produced, and the volume of uncombined hydrog..