Change these word equations into formula equations and balance them. Be sure to use the proper symbols to indicate the state of each substance as given. Do not add conditions above the arrow.
(a) Magnesium metal is placed into hydrobromic acid solution, forming hydrogen gas and aqueous magnesium bromide.
(b) When heated, solid calcium chlorate decomposes into calcium chloride solid, releasing oxygen gas.
(c) Solutions of barium bromide and sodium phosphate combine to form solid barium phosphate and aqueous sodium bromide.
(d) Solutions of silver nitrate and aluminum iodide are mixed together, forming solid silver iodide and aqueous aluminum nitrate

See detailed reaction equations below

Explanation:

a) Mg(s) +2HBr(aq) > MgBr2(aq) + H2(g)

b) Ca(ClO3)2(s) > CaCl2(s) + 3O2(g)

c) 3BaBr2(s) +2Na3PO4(aq) > Ba3(PO4)2(s) + 6NaBr(aq)

d) 3AgNO3(aq) + AlI3(aq) > 3AgI(s) + Al(NO3)3(aq)

Balancing reaction equations involves taking valencies and number of atoms of each element on the reactants and products side into consideration respectively.

the answer is

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.