Answer:
Explanation:
Hello,
In this case, for such formation of sulfur hexafluoride, the standard enthalpy of formation is -1220.47 kJ/mol (data extracted from NIST database). Next, we compute the moles in 10.0 grams of sulfur hexafluoride as shown below:
Next, for the given energy, we compute the total heat that is liberated:
Finally, we conclude such symbol has sense since negative heat is related with liberated heat.
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Answer:
-1, -4
Explanation:
Factoring, you get:
To find what x can be, you need to realize what could make this equation true. To set the left side equal to 0, either one of the terms in parentheses must be equal to 0. To do that, x must be the negative of the other term, so that they can cancel each other out. Therefore, x is -4 and -1. Hope this helps!
Answer:
The molar volume of a gas expresses the volume occupied by 1 mole of that respective gas under <em>certain temperature and pressure conditions</em>.
scientists use molar volume to measure gas because it it tells us about volume occupied by gas.
<u><em>Molar volume</em></u>
- The molar volume of a gas tell us about volume occupied by 1 mole of that respective gas under certain temperature and pressure conditions.
- At STP(Standard Temperature and Pressure) condition which is equal to 22.4 L for 1 mole of any ideal gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm.
- The molar volume of a gas is derived from the ideal gas law <u><em>PV=NRT</em></u>