It is B. Thank you later please and do good on the test!
Salt: NaCl
Hydrogen gas: H2
Nitrogen is 5 valence electrons
oxygen is 6 valence electrons
fluorine is 7 electrons
Answer:
isotope 2
Explanation:
it has the highest percentage abundance
Answer: 1.87 atm
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,

where,
= initial pressure of gas = 2.50 atm
= final pressure of gas = ?
= initial volume of gas = 26.4 ml
= final volume of gas = 36.2 ml
= initial temperature of gas = 
= final temperature of gas = 
Now put all the given values in the above equation, we get:


The new pressure is 1.87 atm by using combined gas law.