Astream of n-pentane flows at a rate of 60 litres per minute into a heating chamber where it evaporates and is completely mixed with 20% excess air. the temperature and gauge pressure of the air are 340 k and 208.7 kpa the heated gas then flows into a combustion furnace in which a large fraction of the pentane is burned. the product gas, which contains all of the unburned pentane, and no co goes to a condenser in which both the water formed from the combustion and the unreacted pentane are liquified. the gases which don't condense leave the condenser at 275 k and 1 atm of pressure absolute. the liquid condensate is separated into its components (water and pentane) and the flow rate of pentane is found to be 3.78 kg/min. calculate: (a) the fractional conversion of pentane and the extent, (b) the volumetric flow rate of feed air in m/min, (c) the volumetric flow rate of gas leaving the condenser, and, (d) the total volumetric flow rate of the liquid condensate stream leaving the condenser.

- 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

i think   the answer is c hope i'm right

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but