1) Whee the reaction ham bekw is coevecily halanced the coelSclents in order e D
ID: 552133 • Letter: 1
Question
1) Whee the reaction ham bekw is coevecily halanced the coelSclents in order e D) 3,2,362,6 2)Ralance cach of the following egations 3) Which sample contains the snallest number of ats A)0.750 mol CIOH D) 40 mel Au B) 1 25 mol MgsO 1) 3.0 mol Cl )20 mol CHe 1) Which of the following statements concemming coordinate covnlent bonds is correct? A) Once formed, they are always indistinguishable from any other covalem bond. B) They must always be single bonds. cone ofthe atoms involved must be metal and the other a nonmetal. D) Both atoms involved in the bond contribute an equal number of electrons to the bod. ) Which of the following statesents ccecerning differences between lonic and covalen compounds is oorrect A) Covaleet compoands contain two elements, and lonic compounds comain three or moreExplanation / Answer
1) option D
3H2SO4 (aq) + 2Al(OH)3 ----------> Al2(SO4)3 + 6H2O
2a) H2SO4 + 2KOH -------------> K2SO4 (aq) + 2H2O
b) 3Na2CO3 +2AlCl3 -----------> Al2(CO3)3 (s) + 6 NaCl
Q3) option D
number of atoms = moles x atomicity x Avogadro number
a) number of atoms = 0.75 x 6 x Na = 4.5 NA
b) number of atoms = 1.25 x 6 xNa = 7.5NA
c) number of atoms = 2 x 5 xNa = 10 NA
d)number of atoms = 4x1xNa = 4NA
e)number of atoms = 3 x 2xNa = 6NA
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.