Which of the following elements is the most reactive?

Chlorine

Bromine

Fluorine

Helium

A negatively charged balloon has 2.6 µc of charge. how many excess electrons are on this balloon? the elemental charge is 1.6 * 10-19 c. answer in units of electrons.

Which blood vessels have thick, muscular, and elastic walls? Veins Arterioles Capillaries Arteries

Convert 325 milliliters to liters. 0.325 liters 3.25 liters 32.5 liters 325 liters

Describe the relationship among tempreture, heat, and thermal energy

The volume of gas is 250mL at 355kPa. What will the volume be when the pressure is reduced to 76.0kPa?

Disease causing bacteria need oxygen to survive. true or false

Tell what kind of electrical charge eltrons, protons, and neutrons have

Which of the following substances is an Arrhenius acid? BF3 HCN NH3 Mg (OH) 2

Which of the following redox reactions do you expect to occur spontaneously in the forward direction under standard conditions? a. Ni (s) + Zn2 + (aq) →Ni2 + (aq) + Zn (s) b. Pb (s) + Mn2 + (aq) →Pb2 + (aq) + Mn (s) c.

What are abiotic factors of the enviroment lynx