A solution of hydrochloric acid had a hydrogen ion concentration of 1.0 mol/dm3 water was added to the hydrchloric acid until the pH increased by 1.
What was the hydrgoen ion concentration of the hydrochloric acid after water had been added?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

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.)

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.