Which of the following is an element? salt iron sand

6800 6809 Answer these problems with correct sig dig. SHOW YOUR WORK! 32. A piece of copper is placed in a beaker containing 68.56 ml water. The total volume a beaker containing 68.56 ml water. The total volume of the water increases to 232 ml.

What is the layer of the earths atmosphere that we live in

A region around a charged object where the objects electric force is exerted on other charged objects is an electric

Que es agua? Y cómo se respira y cómo se camina en el suelo?

What is the most obvious sign of a chemical change in this reaction. a. a gas was produced. b. the powder mixed with the water. c. there was a change in temperature. eliminate d. the powder dissolved in the water.?

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

Atoms of the halogen family typically steal two electrons from other atoms when they react true or false