Calcula cuantos gramos de KHO se hallan en una disolución total de 650ml siendo que la muestra fue preparada con un 42 % de soluto. Además, calcula cuanto volumen adicional de solvente deberíamos agregar si queremos bajar la concentración del soluto al 30 %.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

increased stability in the completion of fluorine's outer shell.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.