Suomi Test Reader TC
6
Type the correct answer in each box.
Scientists often have to deal with numbers that are either very large or very small. For example, the radius of the Sun is approximately 696,000
kilometers, while bacterial cells are as small as 1.9 x 104 millimeters. Express each number in an alternate form.
In scientific notation, the radius of the Sun is
x 10
kilometers.
In expanded notation, each bacterial cell is
millimeters wide
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in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.