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Question 2. The Shroud of Turin is a piece of linen bearing the image of a man that has for generations been claimed to be the burial cloth of Jesus Christ. If the activity of C-14 in a present-day sample of flax (from which linen is made) is 76 counts/s, and that in a sample of the shroud is 70 counts/s, how old is the shroud? In approximately what year was it made? Could it have been the burial cloth of Christ? Question 3. Given the inaccuracies in reading the Geiger counter scale and in estimating the age of an object from the graph, give a rough estimate of the error (+/-years) in the ages you determined in questions 1 and 2?
question gas is confined in a tank at a pressure of9.8atm and a temperature of26.5degc. if two-thirds of the gas is
What causes the colors of fireworks. Where do the colors come from? How do we get so many different colors. Give at least onr example of a compound responsible for such characteristic color.
Equilibrium is established between Br-Br (l) and Br-Br (g) at 25 C. A 250.0mL sample of the vapor weighs 0.486g. Explain what is the vapor pressure of bromine 15 25.0 C, in mmHg.
A gas sample containing 1.47 mol at 25°C exerts a pressure of 401 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr,
a 10.9-g mixture of nitrogen and carbon dioxide is found to occupy a volume of 8.88 l when measured at 641.9 mmhg and
What is the sum of all the coefficients in the balanced equation?
question ammonium nitrate can decompose explosively when heated according to the equation2nh4no3s --gt 2n2g 4h2og
If the pressure exerted by ozone, O3, 3.0x10-3 atm and the temperature is 247 K , how many ozone molecules are in a liter.
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
Write the balanced chemical equation that corresponds to this reaction. B) If 15g cyclohexane is burned in a calorimeter with a heat capacity of 230kJ/K, what temperature change do you expect
Ammonium Chloride and sodium hydroxide. Sodium cyanide and ammonium bromide. Potassium hydrogen sulfate and lithium acetate. Ammonia hypochlorite and ammonia
Oxygen gas as well as potassium chloride can be created by heating potassium chlorate in the presence of manganese dioxide as a catalyst. Explain how many moles of oxygen gas would be obtained from 1.3g of potassium chlorate
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