Answer:
the answer is 7.936X 10⁻⁷kg.... the unit for volume must be cm³
Explanation:
we know,
ρ =m/v
given,
ρ =19.84/1000X(100)²= 1.984X10⁻⁶kg/m²
V (volume of the container means the volume of the element)=2.5 m³
NOW putting in the equation
1.984X10⁻⁶/2.5=m
or, m=7.936X 10⁻⁷kg(ANS)
thank u(i am not 100% sure but think it shoud be the answer)
Answer:
for the process is -375 kJ
Explanation:
- Given reaction is a combination of the two given elementary steps.
- Summation of change in standard enthalpy (
)of the two elementary reactions give
of the reaction
.
......![\Delta H_{1}=-287kJ](https://tex.z-dn.net/?f=%5CDelta%20H_%7B1%7D%3D-287kJ)
......![\Delta H_{2}=-88kJ](https://tex.z-dn.net/?f=%5CDelta%20H_%7B2%7D%3D-88kJ)
-----------------------------------------------------------------------------------------------------
![P(s)+\frac{5}{2}Cl_{2}(g)\rightarrow PCl_{5}(g)](https://tex.z-dn.net/?f=P%28s%29%2B%5Cfrac%7B5%7D%7B2%7DCl_%7B2%7D%28g%29%5Crightarrow%20PCl_%7B5%7D%28g%29)
= ![\Delta H_{1}+\Delta H_{2}=-287kJ-88kJ=-375kJ](https://tex.z-dn.net/?f=%5CDelta%20H_%7B1%7D%2B%5CDelta%20H_%7B2%7D%3D-287kJ-88kJ%3D-375kJ)
Answer:
Explanation:
Below are few snaps for explanation.
Answer:
Density
Explanation:
En física y química, la densidad es una magnitud escalar referida a la cantidad de masa en un determinado volumen de una sustancia o un objeto sólido. Usualmente se simboliza mediante la letra rho ρ del alfabeto griego