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Consider a star that has a mass of 2.89×1030 kg. If it were compressed so that the escape speed on its surface was equal to the speed of light (3.00×108 m/s), what would its radius be? Express your answer in km.
When 28.0 ml of 0.500 M H2SO4 is added to 28.0 ml of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temperature rises to 30.17 degrees Celsius. Calculate the delta H of this reaction.
C=3R/2 Express your answer to three significant figures and include the appropriate units. part c Calculate delta U for this process, assuming that . c=3R/2 Express your answer to three significant figures and include the appropriate units part d ..
A 1 L solution of 1.5 M acetic acid and 1.5 M sodium acetate has a ph of 4.74. 10 ml of 0.1 M NaOH were added to the solution followed by the addition of 50 ml of 0.02 M HCl.
The half life of potassium-40 is 1.26X10^9 yrs, if the natural abundance of k-40 is .010% and 3500 disinigrations of k-40 occur every 10 sec in a human body weighing 100kg then what is the concentration of potassium (include all isotopes) in that ..
Suppose a student is measuring the optical rotation of a 1 M sample of (S)-(-)- Limonene. The path length is 13cm. What optical rotation should the student expect to measure?
A patient is given 0.050 mg of technetium-99m where m means Meta stable - an unstable but long-lived state, a radioactive isotope with a half-life of about 6.0 hours. Explain how long until the radioactive isotope decays to 6.3 x 10(-3) mg
Conduct a gap analysis for Anthonys Orchard and Anthonys Orchard is the case study organisation that you will use throughout module.
Problem- The explosive trinitrotoluene (TNT) has the composition of 37.01% C, 2.22% H, 18.50% N, and 42.27% O. What is the empirical formula of TNT (I'm dynamite. TNT I'll win this fight. TNT I'm a power-load, watch me explode
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
Draw a Lewis structure for ClO2. Use formal charges. Can someone give me a good explanation on how to draw this structure in addition to using its formal charges
What are the initial and final pH's? What would be the pH if the same amount of HCl were added to the 125 mL of pure water? The Ka of acetic acid is 1.8*10^-5
Predict and sketch the likely splitting patterns and relative integrations for them most downfield resonance(s) in the proton NMR spectra of both primary alcohols below. Explain why the two patterns are different.
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