What happens to the particles in a substance when it is cold?

A student placed 18.5 g of glucose (c6h12o6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached.

Take the following steps when disposing of contaminated materials: A) Wash contaminated clothing in cold water to get rid of stains B) Dispose of gloves by filling with air and wrapping in newspapers before discarding C) Wash your hands, arms, and

Calculate the moles of calcium chloride (CaCl2) needed to react in order to produce 85.00 grams of calcium carbonate (CaCO3). use the balanced equation!

Which two types of matter are pure substances? A homogenous mixtures and elements B solutions and compounds C elements and compounds D mixtures and elements

True or false? dry ice subliming (turning from a solid straight into a gas) is an example of a chemical change.

The volume of 1 mole of o2 gas at T=273k P=1atm is? A 6.02 x 10^-23 ml B 760 L C 22.4 L D 2.24 L E 224 L

There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for