Physical changes are often accompanied by changes in color or odor.

Explain what needs to happen for the box to start moving

If 2.50 grams of ethane is allowed to react with 5.00 grams of oxygen how many grams of water would be expected?

What is now true about the sugar? A. The sugar is no longer made up of particles because all of the particles dissolved in the water. B. The sugar is still made up of particles, but they got smaller when they dissolved. C.

Recreation is not a significant area of water use. True False

An unknown gas effuses 0.5 times faster than hydrogen gas (H2). What is the molecular mass of the gas? 1.008 g/mol 4.064 g/mol 2.0 g. mol 8 g/mol

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? 4 KNO3 (s) → 2 K2O (s) + 2 N2 (g) + 5 O2 (g)

What was the ratio in the formula for iron (II) oxide

2C18H38 + 5502 → 36CO2 + 38H2O

What is the opposite of osmosis

Acid rain most often damages stone architecture by causing