The wall of an industrial furnace is constructed from 0.15-m-thick, fireclay brick having a thermal conductivity of lz w/m. k. measurements made during steady state operation reveal temperatures of 1400 and 1150 k at the inner and outer sur- faces, respectively. what is the rate of teat loss through a wall that is 0.5 m by 1.2 m on a side?

- 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

its first and third is your answer i did the qustion the fourth isnt right