Considere as equações. :
i- al2o3+hcl> alcl3+h2o.
ii-so2+naoh> na2so3+h2o.
iii- bao4+hno> ba (no3)2+h2o+o2
a sequência correta dos coeficientes dos reagentes e produto necessários para o balanceamento estequiométrico dessa equação é:

i.
a) 6,3,3,2.
b)1,6,2,3
c)1,3,3,2
d)6,1,2,3
e)1,6,2,3

ii.
a)1,2,1,1
b)2,1,1,1,
c)2,1,2,2
d)2,1,2,2
e)1,2,1,1

iii

a)2,1,2,2,2
b)1,1,2,1,1
c)1,2,1,1,1
d)2,1,2,2,2
e)1,2,1,1,1

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

In which phase(s) do the molecules take the shape of the container?

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced