Someone please I’m begging you. 20 points
How many formula units of magnesium phosphate will be produced from 5, 8g sodium triphosphate? The equation is 2Na 3 PO 4 +3 Mg(NO 3 ) 2 Mg 3 (PO 4 ) 2 + 6 NaNO 3 .

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?