The maximum size the balloon can get before popping (or flying off the flask) is 6.00 l at 1.00 atm of pressure and a temperature of 45°c. what maximum concentration of hydrochloric acid can be used (to just keep the balloon from popping) if 65.0 ml of hcl is added to 9.00 g of magnesium?

The maximum concentration of HCl that can be used is 7.08 M

Explanation:

The reaction that takes place is:

The available moles of Mg are:

H₂ gas is produced and fills the balloon. We use PV=nRT to calculate the maximum moles of H₂ that can be produced before the balloon pops off:

Now that we know that we have more than enough moles of Mg to produce 0.230 moles of H₂, we know that HCl is the limiting reactant.

We calculate the required moles of HCl:

Now we use C = n/V to calculate the concentration of HCl:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.