Answer:
The main characteristic of web 2.0 applications is they have the ability to become better the more that people use it which means that the answer to this is letter A
Answer:
The answer is: B) a standard set of rules and procedures for control of communications in a network
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Explanation:
To exchange information between computers across a network, there must be a preexisting agreement as to how the information will be structured and how the sender and receiver will behave. Without a protocol, receive or send information, the communication between computers will be impossible. The computer protocol is OSI (Open Systems Interconnection) sets guidelines for implementing networking communications between computers.
Explanation: Determine the mass of the substance, and its molar mass. Divide the given mass by its molar mass to get moles, then multiply times 6.022×1023molecules1mol
I searched up the answer and got 1991. Hope this is correct.