The question is incomplete. Complete question is provided below:
<span>Which energy profile best shows that the enthalpy of formation of CS2 is 89.4 kj/mol?
</span>A. C(s) + 2S(s) → CS2(l) + 89.4 kJ.B. C(s) + 2S(s) + 89.4 kJ → CS2(l).C. C(s) + 2S(s) + 89.4 kJ → CS2(l) + 89.4 kJ.D. C(s) + 2S(s) → CS2(l)........................................................................................................................
Correct Answer: Option B i.e. C(s) + 2S(s) + 89.4 kJ → CS2(l)
Reason:
For th formation of CS2 from C and S, heat has to be supplied to the system. In the case, where heat has to be supplied, it is written in left hand side of reaction i.e. on reactant side. Hence correct representation for enthalpy of formation of CS2 is option B.
Answer:
Explanation: Ammonia (NH3) is produced by the reaction of nitrogen gas and hydrogen gas. ... How many grams of fluorine gas are needed to produce 100.00g of AlF3? ... How many molecules of CO2 gas can be produced of 156.24g of benzene, ... (a) If 16.74.g of Fe and 9.0 9 of H2O are allowed to react, how many grams of products.
The statement of the combined gas law for a fixed amount of gas is,
PV/T = constant
Here, the units of pressure and volume must be consistent and the temperature must be the absolute temperature (Kelvin or Rankine).
0.65 atm is equivalent to 494 mmHg
Using the equation:
(755 x 500) / (27 + 273) = (494 x V) / (-33 + 273)
V = 3396 ml = 3.4 liters
Answer:
Chemistry will help us solve many future problems, including sustainable energy and food production, managing our environment, providing safe drinking water and promoting human and environmental health.
Explanation: