Are the chemical reactions that take place when a battery connected endothermic or exothermic

Calculate the moles of ammonia present in a 4.652 g sample if the molar mass of ammonia is 17.030 g/mol.

Which ion makes the waste alkaline in sodium chloride

Is "Barrel of Slime" Toxic?

Define reversible change

A gas in a cylinder with movable piston has an initial volume Of 88.2 ML at 35°C. The cylinder is heated at constant pressure until the volume becomes 123 ML. What was the temperature in degrees Celsius to which the gas was heated

The electron configuration 1s22s22p63s23p6 represents which noble gas?

What are some disadvantages of incinerators?

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)