Which of the statements below is not a characteristic of economically developed nations?

1. access to health care

2. high standard of living

3. industrialization

4. reduced use of resources

Sometimes when extraction a polar organic solute into anorganic solvent, brine (a saturated solution of sodium chloride) isused in place of water. What is the advantage of using brinerather than water?

A compound is found to contain 49.5% carbon, 5.19% hydrogen, 16.5% oxygen, and 28.9% nitrogen. its molecular mass is 194.2 g/mol.

A standard galvanic cell is constructed so that the overall cell reaction is as given below where M is an unknown metal.

Use the relative size of the 3s orbital below to answer the following questions about orbitals A-D. (a) Which orbital has the highest value of n? (b) Which orbital (s) have a value of l = 1? l = 2?

Indicate which reactions are redox reactions. check all that apply. check all that apply. 2na (s) + cl2 (g) →2nacl (s) cd (s) + pb2 + (aq) →cd2 + (aq) + pb (s) pb (no3) 2 (aq) + 2licl (aq) →pbcl2 (s) + 2lino3 (aq) c (s) + o2 (g) →co2 (g)

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.

What can happen to a supersaturated silution?

What is the source for georthermal energy

What senses will we use only with permission from a teacher or adult in Physical Science Labs?

Where is chemistry used?