For the complete combustion of 1.000 mole of methane gas at 298 K and 1 atm pressure, ΔH° = - 890.4 kJ/mol. What will be the amount of heat released when 1.97 g of methane is combusted under these conditions?

A spherical balloon contains a positively charged object at its center. as the balloon is inflated to a greater volume while the charged object remains at the center, what does the electric potential at the surface of the balloon do?

What do we call a solution that does not satisfy the original equation?

Use a periodic table to find the elements that are most abundant in our Oceans: A) H, Cl, O B) Al, Fe, Ca, Na, K, Mg, O, Si C) N, O, Ar d) H, N, Ca, P, O, C

How many significant gigures are in each mesasurments 303,000mm

What Type of chemical reaction is: BaCl2 + 2 AgNO3 - -> 2 AgCl + Ba (NO3) 2

Rachel is given 50 grams each of three different white powders that look very similar. She is told that each of these powders is commonly used in cooking. Without tasting any of them, she is asked to try to identify them.

Same force on two object of different masses

When two chemicals mix inside an ice pack, the ice pack feels cold to the touch. this type of chemical reaction is known as a (n) ?

Rank the following in order of strength of inter-molecular forces from strongest to weakest: solid liquid gas

K20 ionic or covalent