Helpp
Explain Dalton’s Law in 1 or 2 sentences.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

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.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?