Before you begin titration, drops of indicator are added to the Erlenmeyer flask. This happens when preparing to measure pH change.
<span>a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.</span>
As the plane rose, the pressure within the cabin reduced at a constant temperature. According to Boyle's law, the pressure and volume of a gas are inversely proportional, so the volume increased.
This increase in volume cause the balloons to pop.
Answer:
<em>Mass number = protons + neutron</em>
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<em>The mass number of an element is the sum of the protons and neutrons. The number of neutrons for a given element is the only number that can change and still have the identity of the element stay the same, (because the atomic number is the number of protons).
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<em>In this case the mass number would be 11</em>
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