suppose that element Y and Z are all the same period of the table, allot them to their correct group or the following evidence: are oxide W2O exists and is strongly basic form a liquid covalent chloride Cl3 the oxide y is Y2O3 , 3 produces and ion

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

How many atoms are there in 5.70 mol of mg