3. What is the total pressure of a mixture of nitrogen and hydrogen, in atm, if the partial pressure of nitrogen is 509.7 mmHg and the partial pressure of hydrogen is
630.3 mmHg?

What are the 4 phases of matter in order of increasing engery content?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?