http://buswk.co/uGnRGU Dec. 22 (Bloomberg) -- China-based hackers rifled the computer networks of the U.S. Chamber of Commerce, stealing
a large amount of confidential e-mails and documents in what a person familiar with the investigation described as a major security breach of the largest U.S. business lobbying group.
Why would it be correct to say "a large
number of confidential e-mails and documents" instead of "a large amount of confidential e-mails and documents"? Would "amount of
plural" be correct?