what is the area of the right triangle formed by halving a square with perimeter 36 along its diagonal? a) 9 b) 18 c) 18+ 9 square root 2 d) 40.5 e) 81
Compare the present Periodic Table with Mendeleevs original Periodic Table in terms of how it is organized, number of elements, what it looks like, ease of understanding, and information given.
Explain what the term "halogen" means and why they have this name, and which halogens exist as a solid, a liquid, and a gas at room temperature.
why were the noble gases considered to be inert gases until the 1960s?
Find the slope of the line that is a) parallel and b) perpendicular to the given line. 1. x=-8 2. y=10
add all sides together=perimeter p=10+10+12+12 length*width=area 10*12=120
the answer is 4
is this right? -log(concentration of h3o+ or h+) ph= -log(9.5*10^-8) 1) 7.022
1. Find the pH of a solution whose [H3O+] is 9.5 X 10^ -8 M. 2. What is the [H3O+] concentration of a solution with a pH of 5.45? 3. What is the pOH of a solution with a [OH -] concentration of 2.97 X 10^ -10 M?