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Create 95% confidence interval for population mean time using the standard deviation of 0.05 minutes. Which confidence interval is wider? Describe.
Determine minimum sample size needed, using prior study which found that 32% of respondents said they have high-speed Internet access. ii) No preliminary estimate is available.
Determine mean and median of coffee content again. Which measure of central tendency, mean or themedian was affected more by data entry error?
Find minimum sample size required to create 90% confidence interval for population mean. Suppose poplulation standard deviation is .25 inch.
Find out the ligands in the following complex ions Explain how would free F- ion be released from the following complexion, [Alf4]-
What is the molecular weight of the unknown gas? In one experiment the effusion of CHCl3 is detected to be 10.35 min and in a separate experiment an unknown gas is detected at 6.54 min.
Functions In Fantasy Island the individual pays 10% tax on gross annual income not exceeding $200,000. Find annual tax liability function T(x) for the income earner in Fantasy Island.
A chemistry student is about to make a stock solution of 0.1 molar HCl. He proceeds by adding two 10mL additions of 10M HCL to a 500mL beaker and fill it with water from the sink.
Determine what volume will 307 mL of gas at the 19 degrees C and a pressure of 382 mm Hg occupy if the temperature is reduced to- 87 degrees C and the pressure increased to 772 mm Hg?
At a pressure of 16.5 atm at 19.0 degrees C a gas is placed in a storage tank. As a safety device, there is a small metal plug in the tank made of a metal alloy that melts at 125 degrees C.
When Sally jumps off bridge, cord's elasticity is not being used. Due to freefall only and neglecting wind resistance, find velocity at moment when cord first has tension?
Determine how many geometric isomers of this compound should exist? A platinum coordination complex has the formula, [Pt(NH3)2BrCl], and exhibits a square planar geometry.
Determine the procedure required for this standardization? An acidic solution is already been made, one needs to standardize it to determine its "known" concentration.
Discuss why red phosphorus is insoluble in hydrocarbons, high melting and not reactive with air while white phosphorus readily dissolves, is low melting and reacts rapidly with air.
Discuss why concentrated hydroxylamine is dangerous, even in the absence of another redox active compound. The 1999 explosion in Allen town, Pennsylvania occurred in an aqueous hydroxylamine purific
Determine the amount of sodium acetate and acetic acid required for this solution. A student needed 1000mL of a 0.10 M buffer of pH 4.0.
What temperature and pressure should be used for CO2 in near-critical fluid (NCF) extraction to get out the maximum amount of d-limonene with minimum removal of other terrenes when the feed is cold-
Calculate the procedure required for this standardization? An acidic solution has already been made, one needs to standardize it to determine its "known" concentration.
Determine the standard entropy of vaporization of ethanol at its boiling point 352 K. The standard molar enthalpy of vaporization of ethanol at its boiling point is 40.5 kJ/ mol
Determine the entropy change associated with lowering the temperature of 2.1 mol of ideal gas atoms from 104.28 degrees C to -42.44 degrees at the constant pressure, assuming that the heat capacity
What is the color of the resulting solution after the addition of the indicator at the endpoint of the titration when a Chemistry student is in the lab and determines that the theoretical end point
Calculate the pH and concentrations of K+, H+, H2PO4-, HPO42-, OH-, PO43- from a1.00L solution which is having 0250 mol KH2PO4 and 0.030 mol KOH.
Determine statically if all 10 ml sample may go out and if there are any outliers in the collected data. The QC dept requires that 10 samples of vinegar be analyzed per day by titration.
What is the needed pressure? (Gases can be treated as ideal.) Suppose that ammonia is produced at 450ΟC when the pressure is such that ΔrG for the reaction 1/2N2 (g) + 3/2 H2 (
Determine the entropy change associated with the isothermal compression of the 6.64 mol of ideal gas atoms from 5.81 atm to 14.75 atm?