Chemistry, 26.06.2019 06:30 chaseashley24
Which definition is correct? a) a physical change creates a new substance because bonds are broken or formed b) a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change c) a physical change can happen without changing any characteristics of the substance d) a chemical change produces a new substance by breaking and forming new bonds
Answers: 1
Chemistry, 23.06.2019 00:30
Balance the following reaction. as2s3 + 9o2 ā 2as2o3 + so2
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Wind and moving water provide energy. chemical mechanical thermal none of the above
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The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?
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Chemistry, 23.06.2019 08:10
Time remaining 58: 10 an atom that has 84 protons and 86 neutrons undergoes a reaction. at the end of the reaction, it has 82 protons and 84 neutrons. what happened to the atom? it accepted radiation in a chemical reaction it donated neutrons to another atom in a chemical reaction it emitted an alpha particle in a nuclear reaction. it accepted protons in a nuclear reaction. mark this and retum save and exit next submit
Answers: 3
Which definition is correct? a) a physical change creates a new substance because bonds are broken...
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