What is a collection of organs whose primary function is to take in oxygen

and expel carbon dioxide?

•cardiovascular system

•skeletal system

•muscular system

•respiratory system

Sitting at a four-legged table there is: 1 grandma, 2 moms, 2 daughters and a granddaughter. How many legs are under the table?

Reactions occur when 2 or more atoms or molecules combine to form a larger, more complex molecule. this can occur through the loss if water and therefore can be called

The atomic number of an atom will always identify the amount of protons in its nucleus. If the atom is neutral, what else is identified by the atomic number? A. the number of electrons in the atom B. the most common isotope of the atom C.

A solution is made by dissolving 0.0150 mol of HF in enough water to make 1.00 L of solution. At 26 °C, the osmotic pressure of the solution is 0.449 atm. What is the percent ionization of this acid?

Which statement is true about the substances present in a mixture? They always consist of the same element. They are always in the same state of matter. They can be separated by physical methods. They can only be separated by chemical methods.

A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.

Is the bonds that cause gaseous Cl2 to become liquid when cooled intramolecular or intermolecular

Describe an example of deposition

What is meant by solvation? A. nonpolar solute surrounded by polar solvent B. polar solute surrounded by nonpolar solvent C. ionic solute surrounded by nonpolar solvent D. ionic solute surrounded by polar solvent

7. Convert 158 g of C to moles.