Indicate what type, or types, of reaction each of the following represents: (a) h2 o(g) + c(s) ⟶ co(g) + h2 (g) (b) 2kclo3 (s) ⟶ 2kcl(s) + 3o2 (g) (c) al(oh)3 (aq) + 3hcl(aq) ⟶ alcl3 (aq) + 3h2 o(l) (d) pb(no3 )2 (aq) + h2so4 (aq) ⟶ pbso4 (s) + 2hno3 (aq)

Answer :

(a) This reaction is a type of single displacement reaction.

(b) This reaction is a type of decomposition reaction.

(c) This reaction is a type of double displacement reaction.

(d) This reaction is a type of double displacement reaction.

Explanation :

(a)

This reaction is a type of single displacement reaction. It is a type of reaction in which the more reactive metal displaces the least reactive metal from its solution.

(b)

This reaction is a type of decomposition reaction. It is a type of reaction in which a single larger compound decomposes to give two or more smaller molecules as a product.

(c)

This reaction is a type of double displacement reaction. It is a type of reaction in which the cation and the anion of the two reactant exchange their places to give two another compounds as a product.

(d)

This reaction is a type of double displacement reaction. It is a type of reaction in which the cation and the anion of the two reactant exchange their places to give two another compounds as a product.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer