Which of the following is a physical change?
O Ice melts at 0°C.
Carbon combines with oxygen...
Chemistry, 13.06.2020 23:57, julialombardo53
Which of the following is a physical change?
O Ice melts at 0°C.
Carbon combines with oxygen to form carbon dioxide.
A red substance is decomposed by heat to form
mercury and
oxygen.
Water is decomposed by electricity into hydrogen and oxygen.
Answers: 3
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)]
Answers: 1
Chemistry, 23.06.2019 02:00, hayleebeals50
To calculate the molarity of a solution, you need to know the moles of solute and the
Answers: 2
Chemistry, 23.06.2019 02:30, elyzarobertson
Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.
Answers: 1
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