Which best defines what a mole represents in chemistry?
the total number of protons and neutrons contained in any substance
the total number of protons and neutrons contained in any substance
the amount of chemical substances that contain
6.02
×
10
23
chemical units
the amount of chemical substances that contain 6.02 × 10 23 chemical units
the number of molecules of solute dissolved in one liter of a solvent
the number of molecules of solute dissolved in one liter of a solvent
the standard unit for mass in the International System of Units
the standard unit for mass in the International System of Units
Answers: 3
Chemistry, 23.06.2019 22:00
Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?
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Chemistry, 24.06.2019 00:30
An old movie poster used a quote "in space, no one can hear you scream! " why this is true or not true? a) the quote is incorrect, you can hear sound in outer space. b) sound cannot be polarized. so, you cannot hear sound in space. c) sound is an electromagnetic wave and needs no medium to travel through. eliminate d) sound needs a medium for the wave to vibrate and there is nothing in space to vibrate
Answers: 1
Chemistry, 24.06.2019 02:00
Drag the tiles to the correct boxes to complete the pairs. match the chemical name of each oxide of phosphorus to its chemical formula. phosphorus monoxide p4o7 diphosphorus tetroxide p2o5 tetraphosphorus heptoxide p2o4 diphosphorus pentoxide po arrowboth arrowboth arrowboth arrowboth
Answers: 1
Which best defines what a mole represents in chemistry?
the total number of protons and neutrons co...
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