3. Two elements R and S combine to form
the compound RS^2.Which of the following
statements is true?

A:An energy change occurs when RS2
is formed.

B :RS^2 will have a colour in between those of
R and S.

C:RS^2 have the properties of both
R and S.

D:The ratio of R:S atoms is 2:1.

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest