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QR Ph (officially the National QR Code Standard) is the standardized quick-response code system adopted in the Philippines, which is based on the Europay-Mastercard-VISA (EMV) standard. It serves as a swift and secure payment method for customers of both participating banks and non-bank electronic money issuers (EMI) in the country.
e. In chemistry, pH ( / piːˈeɪtʃ / pee-AYCH ), also referred to as acidity or basicity, historically denotes " potential of hydrogen " (or "power of hydrogen"). [ 1] It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions.
The Henderson–Hasselbalch equation can be used to estimate the pH of a buffer solution by approximating the actual concentration ratio as the ratio of the analytical concentrations of the acid and of a salt, MA. The equation can also be applied to bases by specifying the protonated form of the base as the acid. For example, with an amine,
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The natural logarithm of e itself, ln e, is 1, because e1 = e, while the natural logarithm of 1 is 0, since e0 = 1 . The natural logarithm can be defined for any positive real number a as the area under the curve y = 1/x from 1 to a[ 4] (with the area being negative when 0 < a < 1 ). The simplicity of this definition, which is matched in many ...
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Stay strong. Take care of your own health. Make sure you get enough sleep, eat well, take a break from time to time, and maintain social networks. Keep up with your regular health checkups and let ...