Brass is used in electrical equipment. I contains two .1. elements. Together they form . 2.
Which words correctly complete gaps 1 and 2?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride