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Calculate the molarmass of a nonelectrolyte that lowers the freezing point of 25.00g of water to -3.9 degrees C when 4.27 g of the substance is dissolved in the water.
Q. How reliable are measurements? When scientists glance at measurements they want to know how accurate as well as how precise the measurements are. Accuracy demotes to how c
WHAT ARE THE CHEMICAL PROPERTIES OF GLUCOSE?
Total number of unpaired electrons in an atom of atomic number 29 is: (1) 1 (2) 3 (3) 4 (4) 2 Ans: 1
A solution is made by dissolving30 g of a non-volatile solute in 90 g of water. It has a vapour pressure of 2.8 kPa at 298 K. At 298 K, vapour pressure of pure water is 3.64 kPa
Physical properties of Glucose 1. Glucose is a colourless crystalline solid, melts at 146° C. 2. Glucose is readily soluble in water. 3. From aqueous solution,Glucose se
Calculation of empirical formula The steps included in the calculation are as follows, (a) Divide the percentage (%) of each element by its atomic volume. This gives th
Six protons are found in the nucleus of : (1) Boron (2) Lithium (3) Carbon (4 )Helium Ans: Carbon
Determination of accuracy of volume marking on glassware I. PURPOSE OF THE EXPERIMENT To become familiar with the laboratory environment and to acquire skills in accur
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