<span>Earthquakes, tsunamis, the rise of hills and mountains, change the course of rivers
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Okay so, the molar mass (Mr) of O2 is 32g
moles = mass/Mr
moleS= 32.4/32= 1.0125mol
the Mr of KCl is 39.1+35.5= 74.6g
the ratio of moles of KCl to O2 is 2 : 3
therefore moles of KCl is (1.0125/3)×2= 0.675mols
mass =moles×Mr=0.675×74.6= 50.355g
rounds up to 50.3g therefore last answer is correct
Answer:
density =mass/ volume
Explanation:
isn't this physics ...
so is the mass is 19 g and volume = 25 ml first convert to same units (g/cm3)
1ml = 1cm3
same units so no need to convert
19 divided by 25 = 0.76
0.76 g/cm3
pls give me brainliest
This definition would best fit conformational isomers. Two compounds that have different structural formulas, although the number and types of atoms are the same.