Na₂S(aq) + Cd(NO₃)₂(aq) = CdS(s) + 2NaNO₃(aq)
v=25.00 mL
c=0.0100 mmol/mL
M(Na₂S)=78.046 mg/mmol
n(Na₂S)=n{Cd(NO₃)₂}=cv
m(Na₂S)=M(Na₂S)n(Na₂S)=M(Na₂S)cv
m(Na₂S)=78.046*0.0100*25.00≈19.5 mg
I believe that the best answer among the choices provided by the question is the third choice , a change in number
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Answer:
<u></u>
Explanation:
The current temperature and pressure at <em>STP </em>(Standard Temperature and Pressure) stated by IUPAC are:
- Temperature: 273.15 K (0 °C)
- Pressure: 10⁵ Pa ≈ 0.9869 atm
Using the <em>ideal gas </em>equation, pV = nRT, and the Avogadro constant, you can find the<em> volume occupied by 5.80 × 10²⁰ molecules.</em>
![pV=nRT\\\\ \\ V=\dfrac{nRT}{p}](https://tex.z-dn.net/?f=pV%3DnRT%5C%5C%5C%5C%20%20%5C%5C%20V%3D%5Cdfrac%7BnRT%7D%7Bp%7D)
![V=\dfrac{5.80\cdot 10^{20}molec\times \dfrac{1mol}{6.022\cdot 10^{23}molec}\times 0.08206\dfrac{atm.liter}{mol.K}\times 273.15K}{0.9869atm}](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B5.80%5Ccdot%2010%5E%7B20%7Dmolec%5Ctimes%20%5Cdfrac%7B1mol%7D%7B6.022%5Ccdot%2010%5E%7B23%7Dmolec%7D%5Ctimes%200.08206%5Cdfrac%7Batm.liter%7D%7Bmol.K%7D%5Ctimes%20273.15K%7D%7B0.9869atm%7D)
![V=2.19e^{-2}liter=0.0219liter](https://tex.z-dn.net/?f=V%3D2.19e%5E%7B-2%7Dliter%3D0.0219liter)
Answer:
Water has a density of 1 g/m so it could be sometimes true
Explanation:
Answer: If you run the suspension through a filter such as a filter paper or a sintered glass funnel, the solid particles will remain on the filter while the liquid passes through the filter, thus separating the two. ... Filtration is the act of separating a heterogeneous mixture of a solid and a liquid.
Explanation: hope this works