If an atom donates or accepts an electron, what is it considered?

a. an ion

b. neutral

c. an isotope

d. protonated

A copper rod that has a mass of 200.0 g has an initial temperature of 20.0°C and is heated to 40.0°C. If 1,540 J of heat are needed to heat the rod, what is the specific heat of copper?

Propane (C3H8) is widely used in liquid form as a fuel for barbecue grills and camp stoves. For 68.0 g of propane, determine the following: (a) Calculate the moles of the compound, (b) calculate the grams of carbon.

The place where digested molecules of food water and absorbed

What is the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation a/z X.

a certain quantity of gas occupies a volume of 0.1 L when collected over water at 288 K and a pressure of 0.92 bar. the same volume of gas occupied a volume 0.85 L at S. T. P in dry conditions. Calculate the aqueous tension at 288K.

If an object sinks in water it's density is less than that of water true or false

How many moles are in 24 grams of FeF3

Does decreasing the number of moles of gas decrease temperature

Fluorine (F) and bromine (Br) are in the same group on the periodic table. How do atoms of these elements compare when they form bonds? 1-Both a fluorine atom and a bromine atom lose one electron, and both atoms become stable.

Why would the federal government and city government find it necessary regulate water standard?