Answer: hope it help
Explanation:
1. I assume that it is possible to create the most beneficial consequences in rural zones where agricultural production is concentrated in the region as solutions are placed in place to reduce the human effect on nature. That is because agriculture is a practice that has a huge effect so it is important to protect the climate and nature so that farming can continue.
2. The first suggestion I make to my group is that limited waste disposal should be used. This will encourage any recycled material to have no association with products that would stop recycling. When the love is recycled,
There can be a lot of meanings for isomers. In this case, we are showing the structural isomers of C₇H₁₆. Based on the chemical formula, CₓH₂ₓ₊₂ it is an alkane. They only differ in the positions of methane branches in the parent carbon chain. Basing on the attached picture, the parent carbon chain is pentane for both isomers. But the methyl branches are on the 2nd & 4th, and 2nd & 3rd carbon for 2,4 - dimethylpentane and 2,3 - dimethylpentane, respectively.
Answer:
8.72×10^5
Explanation:
Answered it in the comments! ^^
The mass of the block of ice will be affected in such a way that it will become smaller. This is due to the transformed ice to water. However, the conservation of mass tells us that the combined mass of ice and water will be the same before and after transformation.
Answer:
80.27%
Explanation:
Let's consider the following balanced equation.
2 Fe³⁺(aq) + Sn²⁺(aq) ⇒ 2Fe²⁺(aq) + Sn⁴⁺(aq)
First, we have to calculate the moles of Sn²⁺ that react.
![\frac{0.1015molSn^{2+} }{1L} .13.28 \times 10^{-3} L=1.348\times 10^{-3}molSn^{2+}](https://tex.z-dn.net/?f=%5Cfrac%7B0.1015molSn%5E%7B2%2B%7D%20%7D%7B1L%7D%20.13.28%20%5Ctimes%2010%5E%7B-3%7D%20L%3D1.348%5Ctimes%2010%5E%7B-3%7DmolSn%5E%7B2%2B%7D)
We also know the following relations:
- According to the balanced equation, 1 mole of Sn²⁺ reacts with 2 moles of Fe³⁺.
- 1 mole of Fe³⁺ is oxidized from 1 mole of Fe.
- The molar mass of Fe is 55.84 g/mol.
Then, for 1.348 × 10⁻3 moles of Sn²⁺:
![1.348\times 10^{-3}molSn^{2+}.\frac{2molFe^{3+} }{1molSn^{2+} } .\frac{1molFe}{1molFe^{3+} } .\frac{55.84gFe}{1molFe} =0.1505gFe](https://tex.z-dn.net/?f=1.348%5Ctimes%2010%5E%7B-3%7DmolSn%5E%7B2%2B%7D.%5Cfrac%7B2molFe%5E%7B3%2B%7D%20%7D%7B1molSn%5E%7B2%2B%7D%20%7D%20.%5Cfrac%7B1molFe%7D%7B1molFe%5E%7B3%2B%7D%20%7D%20.%5Cfrac%7B55.84gFe%7D%7B1molFe%7D%20%3D0.1505gFe)
If there are 0.1505 g of Fe in a 0.1875 g sample, the mass percentage of Fe is:
![\frac{0.1505g}{0.1875g} \times 100 \% = 80.27\%](https://tex.z-dn.net/?f=%5Cfrac%7B0.1505g%7D%7B0.1875g%7D%20%5Ctimes%20100%20%5C%25%20%3D%2080.27%5C%25)