The specific heat of mercury is 0.138 J/g Co . If 452g of mercury at 85.0 Co are placed in 145g of water at 23.0 Co , what will be the final temperature for both the mercury and the water?

The final temperature of the mixture will be

Explanation:

As we know that,  

        .................(1)

where,

q = heat absorbed or released

= mass of mercury = 425 g

= mass of water = 145 g

= final temperature = ?

= temperature of mercury =

= temperature of water =

= specific heat of mercury =

= specific heat of water=

Now put all the given values in equation (1), we get

Therefore, the final temperature of the mixture will be

- 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

they are all solids.