The amount ofcalcium present in milk can be determined by adding oxalate to asample and measuring the massof calcium oxalate precipitated. what is the mass percent ofcalcium if 0.429 g of calcium oxalate forms in a125-g sample of milk when excess aqueous sodium oxalate isadded? na2c2o4(aq) +ca2+(aq) → cac2o4(s) +2na+(aq) a. 0.107% b. 0.202% c. 0.343% d. 1.10% e.1.37%
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Chemistry, 22.06.2019 06:30
Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
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Chemistry, 22.06.2019 19:00
A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.
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I’m an electrically neutral atomic any element, there are equal numbers of
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Chemistry, 22.06.2019 21:20
If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied
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The amount ofcalcium present in milk can be determined by adding oxalate to asample and measuring th...
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