Molar mass of Na2SO4*10H2O is 322.1949 g/mol
Thallium has got 81 protons
<u>Have a nice days.......</u>
The answer is B the flow of electrons through a substance
Δ H reaction = q / n where q: amount of heat released and n is number of moles of substance.
q = m . C . ΔT where:
m = mass of substance (g)
C = Specific heat capacity (4.18)
ΔT = change in temperature = 24.25 - 23.16 = 1.09
q = 1000 x 4.18 x 1.09 = 4556 J = 4.556 kJ
number of moles (n) = Molarity (M) x Volume (L)
= 0.185 M x 0.07 L = 0.01295 mole
Δ H = q / n = - (4.556 kJ / 0.01295 mole) = -351.8 kJ / mol
Note: it is exothermic reaction (-ve sign) i.e. temperature is raised
The best and most correct answer among the choices provided by your question is the fourth choice.
The correct arrangement of these particles from largest to smallest mass is: <span>proton, alpha particle, beta particle.</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
