Chemistry help?!Equations- probably simple?

Question

Please can you help me with these equation things?
A- copper
B- iron
C- sodium
D- water

(a) copper oxide + sulfuric acid to copper sulfate + ( either A, B , C or D)
(b) copper sulfate + iron to (............) + iron sulfate
(c) iron oxide + carbon to ( .............) + carbon dioxide
(d) titanium chloride + (...................) to titanium + sodium chloride

THANKS, and if you could, please can you explin how these are done? I have forgotten s i haven't done them for a year and got very confused!:)

Answer 1

D

A

B

C

These are replacement reactions. I'm afraid you just have to learn the type and how to recognize them.

Answer 2

The twine is largely a protracted cylinder. the quantity of a cylinder is go sectional area x length. the completed quantity of copper in the bar is the mass divided by way of the density. The equation is: quantity = length x go sectional area Calculate quantity and area then resolve for length.