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reactions in grade 10

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Bushra Shayya

Lebanon

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#	Jeux	Précision	temps
1	Bushra Shayya 13 Janvier 2019	% 80	00:45
2	Amanda Ninahualpa 15 Janvier 2019	% 40	00:34

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ReactionsVersion en ligne reactions in grade 10 par Bushra Shayya 1 the net ionic equation of this reaction SrBr2 (aq) + K2SO4 (aq) --> SrSO4 (s) + 2 KBr (aq) is: a Sr2+ (aq) + 2 Br¯(aq)--> SrBr2 (aq) b 2 K+ (aq) + SO4 2- (aq) --> K2SO4 (aq) c Sr2+ (aq) + SO4 2- (aq) --> SrSO4 (s) d Sr2+ (aq) + SO4 2- (aq) --> SrSO4 (aq) 2 If a reaction aA +bB--> cC + dD is in stoichiometry then a (n A)/a ≠ (n B)/b≠ (n C)/c ≠ (n D)/d b (n A)/a= (n B)/b= (n C)/c= (n D)/d c (n A)left /a= (n B)react/b= (n C)formed/c= (n D)formed/d d (n A)react/a= (n B)react/b= (n C)formed/c= (n D)formed/d 3 108 grams of aluminum are reacted with " X "grams of sulfur to produce aluminum sulfide. T he minimal mass of sulfur needed for the reactants to be in stoichiometric ratio is a 182 g b 192 g c 194 g d 184 g 4 46.4 g of Fe3O4 react with 30 g of CO according to the equation Fe3O4 + 4CO --> 4CO2 + 3Fe . a The reaction mixture is in stoiciometry b The reaction mixture is in non- stoiciometry where Fe3O4 is the limiting reactant c The reaction mixture is in non- stoiciometry where CO is the limiting reactant d The reaction mixture is in non- stoiciometry where Fe3O4 is the reactant in excess 5 Which of the boxes below correctly shows what the reaction mixture would look like after the reaction was complete? a A b B c C d D

ReactionsVersion en ligne

reactions in grade 10

par Bushra Shayya

the net ionic equation of this reaction SrBr2 (aq) + K2SO4 (aq) --> SrSO4 (s) + 2 KBr (aq) is:

Sr2+ (aq) + 2 Br¯(aq)--> SrBr2 (aq)

2 K+ (aq) + SO4 2- (aq) --> K2SO4 (aq)

Sr2+ (aq) + SO4 2- (aq) --> SrSO4 (s)

Sr2+ (aq) + SO4 2- (aq) --> SrSO4 (aq)

If a reaction aA +bB--> cC + dD is in stoichiometry then

(n A)/a ≠ (n B)/b≠ (n C)/c ≠ (n D)/d

(n A)/a= (n B)/b= (n C)/c= (n D)/d

(n A)left /a= (n B)react/b= (n C)formed/c= (n D)formed/d

(n A)react/a= (n B)react/b= (n C)formed/c= (n D)formed/d

108 grams of aluminum are reacted with " X "grams of sulfur to produce aluminum sulfide. T he minimal mass of sulfur needed for the reactants to be in stoichiometric ratio is

182 g

192 g

194 g

184 g

46.4 g of Fe3O4 react with 30 g of CO according to the equation Fe3O4 + 4CO --> 4CO2 + 3Fe .

The reaction mixture is in stoiciometry

The reaction mixture is in non- stoiciometry where Fe3O4 is the limiting reactant

The reaction mixture is in non- stoiciometry where CO is the limiting reactant

The reaction mixture is in non- stoiciometry where Fe3O4 is the reactant in excess

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Reactions

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ReactionsVersion en ligne

par Bushra Shayya

the net ionic equation of this reaction SrBr2 (aq) + K2SO4 (aq) --> SrSO4 (s) + 2 KBr (aq) is:

If a reaction aA +bB--> cC + dD is in stoichiometry then

108 grams of aluminum are reacted with " X "grams of sulfur to produce aluminum sulfide. T he minimal mass of sulfur needed for the reactants to be in stoichiometric ratio is

46.4 g of Fe3O4 react with 30 g of CO according to the equation Fe3O4 + 4CO --> 4CO2 + 3Fe .

Which of the boxes below correctly shows what the reaction mixture would look like after the reaction was complete?

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