Question

indicate which three of the following five are homogeneous mixtures. choose one or more: a. sweat b. compressed air in a scuba tank c. human blood d. nile river water e. an 18k gold ring

Explanation:

A homogeneous mixture has a uniform composition throughout. Sweat is a homogeneous mixture of water, salts, and other substances. Compressed air in a scuba - tank is a homogeneous mixture of different gases like nitrogen, oxygen etc. An 18K gold ring is a homogeneous mixture (alloy) of gold and other metals. Human blood has cells suspended in plasma, so it is heterogeneous. Nile River water has suspended solids and other non - uniformly distributed components, so it is heterogeneous.

Answer:

A. Sweat, B. Compressed air in a scuba tank, E. An 18K gold ring