Mechanical waves that travel through

a.

a vacuum

b.

outer space

c.

a black hole

d.

a medium

Which metal ion produces the light with the highest energy level

How can two different atoms have the same mass numbet

Contain carbon atoms with four single, covalent bonds

Which of the following elements is less reactive than the others? Bromine (Br) Oxygen (O) Selenium (Se) Sulfur (S)

Which of the following is an example of a distance force? A. A car pulling a trailer B. A child pushing a toy car C. A magnet causing a metal object to move D. A dog pulling on a rope

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag

If a color change occurs when two solutions are mixed has a chemical reaction likely occurred?

Using the following thermochemical data, what is the change in enthalpy for the following reaction? Ca (OH) 2 (aq) + 2HCl (aq) → CaCl2 (aq) + 2H2O (l) CaO (s) + 2HCl (aq) →CaCl2 (aq) + H2O (l), ΔH = - 186kJ CaO (s) + H2O (l) →Ca (OH) 2 (aq), ΔH =

1. Calculate the end velocity of a rocket that traveled 16km in 2 seconds. distance time 2. Calculate the rockets acceleration m with a start velocity of 0m/s and the end velocity from #1 for 10 seconds.

How are linear and nonlinear graphs alike