Chemistry, 29.09.2020 06:01 aaronr7383

Light waves do not require a medium.
can not travel in a vacuum.
are not electromagnetic radiation.
do not travel in straight lines from the source.

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Chemistry, 22.06.2019 23:00, lufung8627

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]

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Weight is a measure of: inertia force matter mass

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Chemistry, 23.06.2019 14:00, phil820

What mass of iron must be in a hot pack to provide -335kj of heat when the iron reacts with oxygen and is converted to iron (111) oxide according to the following thermochemical equation? 2fe(s) + 1.5o2(g)—> fe2o3(s) delta h= -824.2kj/mol

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Light waves do not require a medium.
can not travel in a vacuum.
are not electromagneti...