Answer:
it's an example of a closed circuit
- <em><u>TRUE</u></em><em><u> </u></em>
- <em><u>HOPE</u></em><em><u> </u></em><em><u>YOU</u></em><em><u> </u></em><em><u>LIKE</u></em><em><u> </u></em><em><u>IT</u></em><em><u> </u></em>
- <em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
<em><u>MARK</u></em><em><u> </u></em><em><u>ME</u></em><em><u> </u></em><em><u>AS</u></em><em><u> </u></em><em><u>BRAINLIST</u></em><em><u> </u></em>
Answer:
i think its c [everything is so blury]
Explanation:
Okay, so what you first do with this type of question is think about what a chemical change is. A chemical change is a change that can not be reversed. A physical change is something that can be reversed or done using temperature. e.x. Water freezing into ice is a physical change, where as combining vinegar and baking soda together releases a gas, which is chemical, or iron rusting in the presence of oxygen. Which one of these equations has one chemical molecule set that produces a different set?
Answer:
100 g of water has the highest number of moles
Explanation:
Recall that the number of moles is obtained as given mass/formula weight
For HCl;
number of moles = 100g/36.5g/mol = 2.7 moles
For H2O;
number of moles = 100g/18g/mol = 5.5 moles
For MgCO3
number of moles = 100g/84.3 g/mol = 1.2 moles
For AlCl3
number of moles = 100g/133.3g/mol = 0.75 moles
For NaCl
number of moles = 100g/58.4 g/mol = 1.7 moles