At a pressure of 101.3 kilopascal and a temperature of 373 k, heat is removed from a sample of water vapor, causing the sample to change from the gaseous phase to the liquid phase. this phase change is represented by the equation h20(g) -> h20(l) + heat. determine the total amount of heat released by 5.00 grams of water vapor during the phase change shown in the given experiment

The amount of heat released is 11.3 KJ

Explanation:

H20(g) -> H20(l) + heat

This reaction is changing state from gaseous to liquid without changing the temperature. This heat is know as Latent heat. It is the energy required for a phase change.

Heat released by 5 g of water vapor (Q) = M ×  L

where M = mass of vapor

L= latent heat

Latent heat can be divide into 2

Since we are change the gaseous state to liquid, we will be working with Latent heat of vaporization which has a value of 22.6 x 10 ∧5 J/kg

                                     (Q) = M ×  L

                                           = 0.005 x 22.6 x 10 ∧5

                                           = 11300 J

                                           = 11.3 KJ

- 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

the dissolution of polymer can be thermodynamically described in 2 steps.