Hello the answer is c love
From the periodic table:
mass of oxygen = 16 grams
mass of calcium = 40 grams
mass of carbon = 12 grams
mass of CaCO3 = 40 + 12 + 3(16) = 100 grams
Therefore, each 100 grams of CaCO3 contains 3 moles of oxygen
To know the number of oxygen moles in 25.45 grams, we will simply do cross multiplication as follows:
number of oxygen moles = (25.45 x 3) / 100 = 0.7636
Answer:They are all controlled by the human beings.
Explanation:
The selective breeding, cloning and genetic engineering are some of the techniques which is induced by the human efforts.
In case of selective breeding the male and female species having the selective characters are mated with each other so that the offspring produced has the desired characters. It neither requires any enzyme nor uses udder cells.
In case of genetic engineering, the gene of interest is inserted in the bacterial species by the help of vector so that when the bacterial species amplify the gene of interest. This is how the desired products are produced by bacterial species. Example: Insulin production.
Cloning can be defined as another technique made by human beings in which the genetically identical species is made naturally or artificially for the benefit of the mankind.
