Which coefficients balance the following equation?

__ CH4 + __ O2 = __ CO2 + __ H2O

A. 2, 1, 2, 1

B. 1, 2, 1, 2

C. 1, 1, 1, 1

D. 2, 2, 2, 2

When a person uses an iron to remove the wrinkles from a shirt what does heat travel from the iron to the shirt

How does energy change when you eat food?

What is the waste product bilirubin produced from? globin chains of hemoglobin iron found in hemoglobin molecules heme molecules lacking iron heme molecules with iron?

Which particles are lost, gained, or shared in chemical reactions? protons alloys neutrons electrons

5) Samantha added 125 mL of water to 100mL of a stock solution to make 225 mL of a 0.75 M solution. What was the molarity of the original stock solution? O 1.7 M. O 0.3 M O 0.75 M O 3M

Suppose 30 grams of NaCl are placed in 900 mL of water. What is the molarity of this solution?

After a particularly cold day outside you go home to make some tea. you heat the water in the mug so that botch are about 75 degrees celcious. the tea bag is only 30 degrees celcious and the room is around 26 degrees celcious.

For main-group elements using the older numbering system the group number on the periodic table corresponds to which characteristic of the elements of that group

In the vertical columns of the periodic table, as the atomic numbers increase: a. the number of electron shells increases. b. the ionization energies increase. c. the number of electrons in the valence shell increases. d.

Which of the following solutions contains the largest total concentration of ions, assuming complete dissociation .010 M aluminum chloride .010M sodium chloride .010M aluminum sulfate .010M calcium chloride