Part one: calculate the molarity of ba2+ in an aqueous solution that contains 1.7 g of ba(oh)2 in 0.75 l of solution.
answer in units of mol/l.
part two: what is the molarity of h3o+?
answer in units of mol/l.

Afraidsugar lol it’s the third one

You would do 1500/4 and the answer is 375

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood. 

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.