How many o2 molecules are needed
Glucose (C6H12O6) is oxidized by molecular oxygen to carbon dioxide and water. how many O2 molecules are needed for each molecule of glucose that is oxidized?
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Calculate the amount of heat liberated (in kJ) from 421 g of mercury when it cools from 91.0°C to 11.0°C.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 100.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.
Given the absorbance spectrum of compound A below. At what wavelength does compound A most strongly absorb visible light?
Fill the flask to the mark with distilled water. Calculate the mass of sodium hydroxide that the chemist must weigh out in the second step. Round your answer to significant digits.
Discuss some of these major changes, by providing some detailed examples, and whether you think they have been successful in slowing rate of health care expenditures.
If a sample of 6.022 g of CH4 is enclosed in a 30 L container at 402 K. What is its pressure in atmospheres?The volume is reduced to 12 L at constant temperature. What is the new pressure in atmospheres?
The aorta branches into tens of thousands of capillaries whose total cross-sectional area is about 2.75 m2. What is the average blood speed through them?
What mass of sodium chloride, NaCl, is needed to make 389. g of a 3.89%(m/m) NaCl solution? (atomic masses: Na = 22.99, Cl = 35.45)
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