El diámetro de los pernos de una fabrica tiene una distribución normal con una media de 950 mm y una desviación estándar de 10 m
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There are different steps to follow in ensuring safety with firearms. The safer step to follow is that the hunter in the front uses the elbow carry.
When hunting, If three hunters are walking single file, it is better for the hunter in the front should have the gun facing ahead but he or she should never carry it over the shoulder.
The Hunter in the middle must also have the gun facing sideways while the last one who is at the rear should face or point the gun to any side or the rear be it left or right.
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Three hunters are walking single file. Which of the following would be safe?
A. The hunter in the center uses the elbow carry.
B. The hunter in front uses the elbow carry.
C. All three hunters use the trail carry.
D. All three hunters use the shoulder carry.
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Considering the definition of percentage by mass, the sample of pure lithium nitrate contains 7.99% lithium by mass.
<h3>Definition of percentage by mass</h3>The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.
In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:
Because percent by mass indicates the ratio of solute to solution based on mass, if the sample has twice the mass of the first sample, the ratio remains constant.
So the percentage by mass is the same.
That is, the sample of pure lithium nitrate contains 7.99% lithium by mass.
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