Mass of an average blueberry
The mass of an average blueberry is 0.78 g and the mass of an automobile is 2100 kg. Find the number of automobiles whose total mass is the same as 1.0 mol blueberries. Express your answer using two significant figures.
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A solution of ethanol in water is prepared by dissolving 75.0 mL of ethanol (density= 0.79g/cm^3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
The atomic weight of a newly discovered element is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a percent abundance of 41.7%. What is the mass of the second isotope?
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
Assuming that "di-lithium" is very stable and the product of the fusion of two 6Li nuclei, the energy released per kilogram of di-lithium formed in the fusion process is closest to?
A sculptor has prepared a mold for casting a bronze figure. The figure has a volume of 245 mL. If bronze has a density of 7.8 rm {g/mL}, how many ounces of bronze are needed in the preparation of the bronze figure?
Acetic acid has a ka= 1.78x10^(-5). Determine the pHof a 0.100 M solution.Calculate the hydronium ion ([H30+)] concentration of a 0.25 M solution of benzoic acid, HC7H5O2, Ka= 6.46x10^(-5).
Fun activities that expose you to real-world chemistry and biology. Exposure to real-life research and career opportunities in academia and industry. Student-selected topics Do free radicals in food cause cancer?
A 1.33 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mole fraction of the citric acid.
Oleum or fuming sulfuric acid available commercially in concentraytions ranging from 20-99% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 5SO3?
The solubility of NH3 in water at an NH3 pressure of 320 mmHg is 22.8 g/100 mL. What is the solubility of NH3 if the partial pressure is increased to 975 mmHg?
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Imagine that you will establish your own business in the next 5 years. Will you follow in the footsteps of successful family-owned businesses
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Watch the video above, draw inspiration from it, and begin to make your own story. A story entitled "Who am I in my dreams" which is about a student herself,
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Perform a detailed discovery about information accessible about you and your home network using: Google Shodan Maltego.
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Write a proposal essays about and annotated bibliography "The growth of social media during the COVID-19 pandemic."