Isotopes are separated by a. crystallisation b. sublimation c. distillation d. filtration in an atomic explosion, enormous energy is released which is due to a. conversion of chemical energy into heat energy b. conversion of mechanical energy into nuclear energy c. conversion of mass into energy d. conversion of neutrons into protons which among the following is a positively charged particle emitted by a radioactive element? a. beta ray b. alpha ray c. cathode ray d. gamma ray

1.  C.  distillation

2.  B.  conversion of mechanical energy into nuclear energy

3.  B.  Alpha ray

Explanation:

kuchisake

kuchisake-onna (口裂け女, "slit mouth woman ") is a malevolent figure appearing in japanese ghost stories, possibly dating back to the edo period. she takes the form of a masked woman who approaches people and asks them if they believe she is pretty.

explanation:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.