What mass of solid Na2CO3 is required to make 250.0mL of a 0.125M solution of Na2CO3?

What molecules contains a nonpolar covalent bond A:H2O B:H2 C:LiI D:HCI

What changes igneous or sedimentary rock into metamorphic rock?

Match these items. 1. acid _ H + 2. base _ H 3 O + 3. litmus _ pH 14 4. strong base _ charged particles 5. ions _ OH - 6. hydronium _ indicator

The greek philosopher Democritus was one of the first to suggest the existence of atoms

Spectroscopy measurements may be made in either percent transmittance (% T) or absorbance (A). Based on the mathematical relationship between absorbance and transmittance, A =

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps