Answer:
c. when the meniscus is between marks, estimate the reading to the nearest tenth of a division (ie, estimate to 0.01 mL if buret has 0.1 ml divisions)
Explanation:
When we put a liquid in a pipette, we can see that the surface of that liquid will have a curve. This curve is called the meniscus and it has the correct volume that an aqueous solution has. However, for this, it is necessary that the meniscus is observed at eye level and that its edges and center are clearly visible.
That is the element Germanium Atomic weight = 72.64
Answer:
Explanation:
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In this case, according to the given chemical reaction, we can set up the heat of reaction per mole of gasoline as shown below:
Now, since the total heat is obtained by multiplying the moles and heat of reaction, we can calculate the moles as shown below:
Finally, since the molar mass of gasoline is 114.22 g/mol, we can easily calculate the mass as follows:
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A reaction that is spontaneous means that it can produce products without the supply of energy. The total energy from the reactants reached the activation energy that allow the reaction proceed. An example of this is the decay of a diamond into graphite occuring readily.
