Answer:
Explanation:
Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and takes up space.
You have to find the number of moles of hydrogen gas produced when zinc and hydrochloric acid reacted. To do this you need to use the equation PV=nRT and solve for n.(n=PV/RT)
I would use 0.08206 atmL/molK For the gas constant so you need to convert 22°C into Kelvin, 748mmHg into atm, and 59.1mL into L.
22°C+273K=295K
748mmHgx(1atm/760mmHg)=0.984atm
59.1L=0.0591L
plugging everything in:
n=(0.0591Lx0.984atm)/(0.08206 atmL/molKx295K)
n=0.00240mol H₂
After finding the amount of hydrogen gas, you can find the volume of gas at STP by divide it by the molar volume of gas (22.4mol/L).
0.00240mol/22.4mol/L=1.07L H₂
The answer is 1.07L of hydrogen gas at STP was released from the reaction.
I hope this helps. Let me know if there was anything that was unclear to you.
The natural seed spread for purple loosestrife is through water or animals.
I hope this will help.
The answer sould be Component of Thyroxine, Thyroxine contains iodine and are formed from thyronines, which are composed of two molecules of the amino acid tyrosine. Thyroxine contains four iodine atoms, and triiodothyronine contains three iodine atoms.