Calculate percent-by weight of sodium nitrate in solution
A solution of sodium nitrate, NaNO3, in water is 5.181 molar and its density is 1.2680 g mL-1. Calculate the percent, by weight, of sodium nitrate in the solution.
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At 90 degree celsius, the vapor pressure of acetic acid is 293 mmHg and its vapor pressure at 100 deg. celsius is 417 mmHg. calculate the normal boiling point of acetic acid.
toxic chemicals in drinking water usually are reported and a safety level specified in units of parts per million (ppm) by mass. what is the molar concentration of arsenic in a water sample that has 1 ppm arsenic?
Describe the glassware and the technique you would use to take part of a sample of a solution of concentration 1.00 and make it into a solution of concentration 0.250.
Molecular formula of nicotine which an empirical formula of c3h7n and molecular weight of 162g/mole
Of the following anions, Br-, CO32-, Cl-, I-, NO3-, NO2-, PO43-, SO42-, SO32-, list those ions that meet the following criteria: Is involved in an oxidation-reduction reaction as part of a confirmation reaction
In 2008, carbon dioxide levels at the South Pole reached 385 parts per million by volume. (The 1985 reading was 314.6 ppm by volume.) Convert the 2008 reading to a partial pressure (in bar). At this level, how many CO2 molecules are there in
At 720 degress celcius the KC for the reaction N2 + H2 <--> NH3 is 2.37X10-3 in certain experiment the eq. concentration are (N2)= 0.683M, (H2)= 8.80M, (NH3)= 1.05 M. Suppose the NH3 is raised to 3.65. Predict the shift in equilibrium by com
The pressure of the sample was measured at .796 mmHg. if the vapor pressure of water at 40 degrees C is 55 mmHg, what is the partial pressure of the nitrogen gas?
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
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Identify and analyze one resource that provides information regarding services for dealing with and treating substance use and abuse in youth or adolescence.
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Pets can have a therapeutic effect on people; they seem to have the power to calm the anxious and cheer the depressed. Give three reasons
Review Chapter 12 and consider how your culture has impacted your worldview and personality. Pay particular attention to the section on characteristics of Cult