2. How many moles of scandium atoms are in 5.3 x 1025 atoms of scandium? 88 moles
880 moles
0.0113 moles
0.000113 moles

Number of moles of Scandium atoms=88

Given

5.3 x 10²⁵ atoms of scandium

Required

number of moles

Solution

1 mol = 6.02 x 10²³ particles(molecules, atoms, ions)

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.