Answer: The temperature goes up.2.The piston doesn't move in and out.3.Heat flows out.4. Amount of heat evolved is +285 kj/mol
Explanation:
The temperature in the water bath will rise because heat being evolved is absorbed it.Based on principle of constant pressure, the piston doesn't move in and out.Since the reaction is a combination reaction, heat will be evolved.
The answer will be, so3 since s only need two electrons to complete its octet
The independent variable would be the dry ice being placed in the water/other liquid (D) and the dependent variable would be the water/other liquid the dry ice (ID) is being placed in.
It would be a chemical sedimentary rock.
Answer:
The molar mass of the unknown is approximate 145g/mol
Explanation:
We can relate the speed of effusion of gases with the molar mass of the 2 compounds using Graham´s law:
Where V is speed of the gas and m molar mass of a and b gases.
Molar mass of helium is 4g/mol. As the distance of the gases is the same, we can replace the speed of effusion with the time the gas takes to travel the distance. The equation will be:
Replacing:
<h3>The molar mass of the unknown is approximate 145g/mol</h3>