What are the four models of atoms

Consider the reaction CaSO4 (s) ⇌ C a2 + (aq) + S O2-4 (aq) At 25 ∘C the equilibrium constant is Kc=2.4 * 10-5 for this reaction.

How does the structure of amino acids allow them to form a polypeptide

How many moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia? 0.0116mol 0.012mol 0.0232mol 0.024mol

A compound contains 46.7% nitrogen and 53.3% oxygen by mass. What is the empirical formula of the compound?

What's the empirical formula of a molecule containing 54.5% lithium, 9.2% carbon, and 36.6% oxygen?

12) _Na + _H2O → ___ NaOH + __H2

Match the mineral categories to their best descriptions. a. sulfide mineralsminerals that have a sulfur atom surrounded by four oxygen atomsb. sulfate mineralstable salt is an example of this type of mineralc.

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

If you have 100 grams of H2, how many moles of H2 is that?

Consider four elements from Group 7A: fluorine in the second period, chlorine in the third period, bromine in the fourth period, and iodine in the fifth period. Which element has the largest first ionization energy?