Answer:
B.4.75
Explanation:
Buffer solutions are the solutions which can resist the change in the pH up to some extent. They are the solutions of either weak acid and conjugate base of it or weak base and conjugate acid of it.
The pH of a buffer solution can be measured by the equation known as Henderson–Hasselbalch equation.
pH=pKa+log[base]/[acid]
A good buffer that buffer which has its acid's pKa within one pH unit of desired experimental conditions.
Thus, desired pH = 5.3
Preferable pKa = 4.3 - 6.3
<u>Answer - B. 4.75</u>
Answer:
software development is the conceiveing, specifying , designing, programing , texting, document and fix involved in creating and application frame work or other software components.
Answer: Down editing
Explanation:
Down editing is a method of replying emails which allows you to respond point by point to an email. It add certainty, precision and quality to your response and helps prevent misunderstanding of email response.
Answer:
A. Smart card
Explanation:
Smart cards contain a chip that can store a large amount of information as well as on a magnetic stripe for backward compatibility.
Smart card are cards made of plastic or metal material that has an embedded integrated chip that acts as a security token. Smart cards are the same size as a debit or credit card.
They connect to a reader either by a chip (microcontroller or an embedded memory chip) or through a short-range wireless connectivity standard such as radio-frequency identification or near-field communication.
It can be used to perform various functions though most commonly are used for credit cards and other payment cards.
Money market?? i think anyway.
