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A) What are the advantages and disadvantages of writing a chemical equation with chemical symbols and formulas instead of just words?
B) On your own words summarize to another person the steps needed to successfully write a balanced chemical equation.
C) Describe the basic part of a chemical equation. Identify how the physical state of elements and compounds is identified in an equation.
Describe the mathematical relationship between the number of scans acquired in a NMR experiments and the signal to noise ratio. Be precise.
positron x and positron y are each traveling at the same speed. how does the de broglie wavelength of the two positrons
sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. how much
A block of metal has a width of 3.2 rm cm, a length of 17.1 rm cm, and height of 4.5 cm. Its mass is 1.5 kg. Calculate the density of the metal.
calculate the number of moles of nitrogen dioxide that could be prepared from 0.35 mole of nitrogen monoxide and 0.25
A copper wire (density = 8.96 g/cm3) has a diameter of 0.39 mm. If a sample of this copper wire has a mass of 43 g, how long is the wire?
a liter of solution contains .10 mol of Ag+ and .10 mol of Ba+2. if a highly concentrated solution of K2CrO4 is added drop by drop which will precipitate first. Ag2CrO4 or BaCrO4
Although the vibrational degrees of freedom are generally not in the high-T limit, is the vibrational partition fuction evaluated hy discrete summation?
Problem- Calculate the freezing point of a 0.025 m solution of formaldehyde, CH2O, in water. (Kf for water = 1.86 degrees Celcius/m)
calculate the amount of energy necessary to vaporize 10 g of acetone at its boiling point if the heat of vaporization is 29.1 kJ/mol.
The density of oxygen gas (O2, M= 32.00 g/mol) in a new oxygen gas cylinder, measured at T= 20 degrees Celsius, is 0.1632 g/ml. Find the following-
What ions will you find in solution. You want to separate the calcium from iron by addition of Na3PO4. The Ksp for Ca3(PO4)2 (s) is 1.3x10-32 and that for FePO4(s) is 1.0 x 10-22. Identify the precipitate that forms first. Is the separation succes..
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