Answer:
8%
Explanation:
Given that,
Mass of solute = 8 g
Mass of soultion, (mass of alloy) = 100 g
We need to find the percent by mass of 8.0g copper is added to enough zinc to produce 100g an alloy. It can be calculated by the formula as follows :
So, the percent by mass is 8%.
The answer to this question would be: <span>producing large quantities of proteins for secretion.
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A cell with many rough endoplasmic reticulum has a high protein synthesis capability. This will make the cell able to produce many proteins like enzyme. One example of this type of cell will be pancreas cells. This cell will need many enzymes to digest food that you eat so it will need many ER to produce it.
The average top speed of the Cheetahs is 76.83333333333.... miles per hour.
You must find the arithmetical mean, which is solved by adding all the given numbers, and then dividing that by the number of numbers you added(it sounds weird but it is pretty simple).
75 + 74 + 77 + 79 + 80 + 76 = 461
461/6 =
<em><u>76.83333333333....</u></em>
The competition and threat for purple sea star when sea stars gets eaten by sharks it is basically dangerous the will need help when sea stars live in oceans the will be near others as well
A soda can is made from aluminum metal. To determine how many atoms of this element is present in a certain mass of the can, we need to convert the mass into units of moles by using the atomic mass of aluminum which is 26.98 g per mol. Then, we use the Avogadro's number. It represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles or vice versa.
moles Al = 15.1 g Al ( 1 mol / 26.98 g ) = 0.56 mol Al
atoms Al = 0.56 mol Al ( 6.022x10^23 atoms / 1 mol ) = 3.32x10^23 atoms
OPTION A would be the closest.
