Open systems are when matter and energy can freely move in and around the system. Closed Systems is when energy can freely move back and forth between the system but matter can not.
Answer:
Trail Mix
Explanation:
The best description for the snack that Ben is eating would be Trail Mix. This is a very common snack for hikers, hence the name, since it is very healthy and great for taking on hikes since it does not get affected by the sun. This snack was originally called GORP which stands for "good old raisins and peanuts" because the snack originally contained only raisins and peanuts. It has since changed to include various different ingredients such as a variety of nuts, chocolate pieces, dried fruit, cereal etc.
The answer is not a whole number but its 3.12903225806452.....
Answer: 0.297 moles of calcium carbonate.
Solution:
Number of moles of HCl =
moles
![CaCO_3+2HCl\rightarrow CaCl_2+H_2O+CO_2](https://tex.z-dn.net/?f=CaCO_3%2B2HCl%5Crightarrow%20CaCl_2%2BH_2O%2BCO_2)
According to reaction
Two moles of HCl are reacting with one mole of
, then 0.6 moles of HCl will react with:
=![\frac{1}{2}\times 0.6\text{moles of}CaCO_3](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%5Ctimes%200.6%5Ctext%7Bmoles%20of%7DCaCO_3)
Moles of calcium carbonate reacted = 0.3 moles
In 0.3 moles of calcium carbonate 10% impurities is present i.e.
of impurity.
Actual number of moles of calcium carbonate reacted = 0.3 - 0.003 = 0.297 moles.
The atomic number shows the number of protons and the number of protons is equal to the number of electrons. Therefore there are 45 electrons present.