Chemistry, 17.12.2020 19:30 rileyeddins1010
Look up this portion of the periodic table which two elements have the same properties as magnesium.
Potassium in scandium
calcium in scandium
calcium and strontium
sodium and rubidium
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What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml
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8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?
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Look up this portion of the periodic table which two elements have the same properties as magnesium....
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