As stated on google it says “ Farmers and breeders allowed only the plants and animals with desirable characteristics to reproduce, causing the evolution of farm stock. This process is called artificial selection because people (instead of nature) select which organisms get to reproduce. ... This is evolution through artificial selection.”
Answer: The empirical formula is
.
Explanation:
Mass of C = 1.71 g
Mass of H = 0.287 g
Step 1 : convert given masses into moles.
Moles of C = ![\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{1.71g}{12g/mole}=0.142moles](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7B%20given%20mass%20of%20C%7D%7D%7B%5Ctext%7B%20molar%20mass%20of%20C%7D%7D%3D%20%5Cfrac%7B1.71g%7D%7B12g%2Fmole%7D%3D0.142moles)
Moles of H = ![\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.287g}{1g/mole}=0.287moles](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7B%20given%20mass%20of%20H%7D%7D%7B%5Ctext%7B%20molar%20mass%20of%20H%7D%7D%3D%20%5Cfrac%7B0.287g%7D%7B1g%2Fmole%7D%3D0.287moles)
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For C =![\frac{0.142}{0.142}=1](https://tex.z-dn.net/?f=%5Cfrac%7B0.142%7D%7B0.142%7D%3D1)
For H =![\frac{0.287}{0.142}=2](https://tex.z-dn.net/?f=%5Cfrac%7B0.287%7D%7B0.142%7D%3D2)
The ratio of C: H = 1: 2
Hence the empirical formula is
.
I believe it the answer is 3412
Answer:
it protects everything inside our body
Explanation:
Answer:
option C = Reactant: 4NH₃ + 6NO → product: 5N₂ + 6H₂O
Explanation:
Chemical equation:
NH₃ + NO → N₂ + H₂O
Balanced chemical equation:
4NH₃ + 6NO → 5N₂ + 6H₂O
Ammonia is react with nitrogen mono oxide and produced nitrogen and water.
Ammonia and nitrogen monoxide are reactants while water and nitrogen are product.
Four number of moles of ammonia react with six nitrogen monoxide and produced five mole of nitrogen and six mole of water.