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OpenStudy (tayllork):
I really need help with this please! If 45.8 grams of MgO are dissolved in 205 grams of water, what is the concentration of the solution in percent by mass?
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OpenStudy (okdutchman7):
add up 45.8 and 205.
OpenStudy (okdutchman7):
@Tayllork
OpenStudy (okdutchman7):
That equals 250.8
OpenStudy (okdutchman7):
Then divide 45.8 by 250.8 and multiply by 100 for the percent MgO. And divide 205 by 250.8 and multiply by 100 for the percent water.
OpenStudy (tayllork):
18.3%! Thank you so much! @okdutchman7
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OpenStudy (okdutchman7):
That's right. Good Job! @Tayllork
OpenStudy (tayllork):
Thank you! (: @okdutchman7
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