Answer:
15.2 mL
Explanation:
First we calculate the volume of the copper
when this volume of copper is added to the water, the water level will rise by the level of the volume of copper. So the final volume is:
14.6 mL + 0.5580 mL = 15.158 mL
Since the measuring cylinder is graduated to one decimal place , we can round this up to 15.2 mL
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B) 50 J because it had less energy at the beginning than the end
True a negative change in enthalpy means an exothermic reaction
The Formula to find the number of moles is:
Number of Moles = Mass/ Molar Mass
Which means that Mass = Number of Moles * Molar Mass
We know that Number of Moles of Sodium Na =
moles
If you check the Periodic Table, Molar Mass of Sodium Na = 23g/mol
So, Mass =
=
So, the mass in grams of
mol of Sodium is
Hope this Helps :)
