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Write the Lewis structure and the melting point of sodium bromide. Is this a molecular substance or an ionic substance?
Write the Lewis structure and the melting point of naphthalene (this used to be the active ingredient in moth balls). Is this a molecular or ionic substance?
A certain second-order reaction () has a rate constant of 1.80×10-3 at 27 and an initial half-life of 216 . What is the concentration of the reactant after one half-life?
Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085), had a total mass of 10.1 ± 0.1 g. What is the average mass of calcium in each sample
How much heat is needed in kJ to convert 878 g of ice at -10°C to steam at 134°C? (The specific heats of ice, steam, and liquid are 2.03 J/g · °C, 1.99 J/g · °C, and 4.18 J/g·°C, respectively. The heat of fusion is 6.02 kJ/mol and heat of vaporiza..
Fatty acids are soluble in solvants such as petroleum ether, but the salts of fatty acids are not. Explain this observation. What is another name for a salt of a fatty acid
Calculate molar absorbancy of PAP if its diluted solution has an A280 =0.272.The cuvette's width is 1 cm.
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 7.0X10^-2 M NaOH. (a) hydrobromic acid (HBr)
Calculate the binding energy (in J) and the nuclear binding energy per nucleon of 107- 47 Ag (106.9051 amu). a. nuclear binding energy in J
How many mL of each of 0.10 M lactic acid solution and 0.10 M NaOH solution are needed to make 800 mL of a buffer of pH 3.50?
If i add amnonia to 1 mL of copper (II) sulfate solution, and i am observing the mixture turn a darker blue what type of chemical reaction is taking place.
We need to make a 4% NaOH solution in ethanol. How much NaOH do we add to 50.0 mL of ethanol to make a 4% NaOH solution. Density of Ethanol=0.789 g/mL molar mass= 46.06844 g/mol and NaOH molar mass= 39.997 g/mol.
A 125g piece of metal is heated to 288c and dropped into 85.0g of water at 26.0c. If the final temperature of the water and metal is 58.0c then what is the specific heat of the metal.
When 54.01 g of Ba(NO3)2 is dissolved into a total volume of 3.23L of solution.
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