Which of the following accounts for the observation that the pH of pure water at 37°C is 6.8?Answer A: At 37 ° C water is naturally acidic. Answer B: At 37 ° C the autoionization constant for water, Kw, is larger than it is at 25 ° C. Answer C: At 37 ° C water has a lower density than it does at 25 ° C; therefore, [H+] is greater. Answer D: At 37 ° C water ionizes to a lesser extent than it does at 25 ° C

it is b  srry if that not right

Explanation:

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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