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The density of water is 100g/ml at 4 degrees celsius. how many water molecules are present in 2.56ml of water at this temperature
draw a qualitative potential energy diagram for the rotation about the c3-c4 bond in 2,4-dimethylpentane
write the net ionic equation for any precipitation reaction that may be predicted by the solubility rules on the
The colors of the acid and base forms of the indicator bromocresol green are yellow and blue, respectively, and its pKa is 4.6. What color would be expected for the indicator in a solution of pH 6.0 and in a solution of pH 4.8?
When 2.05 grams of aluminum metal are dropped in 650. mL of 6.0 M hydrochloric acid, how many liters of gas are evolved at 20°C, 1.07 atm
Experiment ClO2 (M) OH (M) Rate (M/s) Determine the rate law expression and calculate the value of the rate of constant.
calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. what is the mass
Calculate the sample of concentration. Is this an appropriate concentration for 1H NMR, 13C NMR or both?
A sealed glass jar has a small amount of water on the bottom. The rest of the volume in the jar is taken up by helium gas at a partial pressure of 526 mmHg, and water vapor. If the total pressure inside the jar is 760. mmHg, what is the temperatur..
A piece of metal with a mass of 169 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 38 mL. What is the density of the metal?
Calculate the wavelength at which they are broadcasting.
the active ingredient in toothpaste is sodium fluoride, an anticavity agent. a 170 g tube of toothpaste lists the concentration of sodium fluoride a s0.24%. how many grams of sodium fluoride are in a toothpaste.
A solution of HCl is found to be 0.5277 N and 39.65 mL of its equivalent to 20.65 of standard NaOH. a. What is the normality of NaOH
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