A diesel engine draws in air at the inlet at 95kPa pressure, 300K temperature. The engine has a compression ratio of 20:1. The heat released during combustion is 1300 kJ/kg. Using the cold air standard assumptions, please calculate: a) The temperature after combustion.
b) The cycle efficiency
c) The mean effective pressure for the cycle
d) The cutoff ratio for the cycle

- 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