Type the symbol of the 2nd period. Metalloid

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

A buffer consists of 0.21 M NaH2PO4 and 0.34 M Na2HPO4. Phosphoric acid is a triprotic acid (Ka1 = 7.2 * 10-3, Ka2 = 6.3 * 10-8, Ka3 = 4.2 * 10-13). (a) Which Ka value is most important to this buffer? Ka1 is most important. Ka2 is most important.

What is the solute when NaNO₃ is dissolved into 100g of water?

Nickel (ii) chloride dissolves in water to form a light green solution. what ions are present in solution-that is, what is "swimming around" in the aqueous solution? write the formulas

If solid water is dropped into liquid water, will the solid iron sink or float?

What is half-life? a.) the time it takes for a radioactive atom to lose half its electrons b.) the time it takes for half of any number of radioactive atoms to decay c.) the average time it takes for any element to disappear completely d.

Water molecules are made of slightly positively charged hydrogen atoms and slightly negatively charged oxygen atoms. which force keeps water molecules stuck to one another?

Which can be used to prevent initial entry of bacteria into the body

Which statememt describes gravity? Select three options

Unlike solids, gases can