Calculate the extinction coefficient (ε) in units of M⁻¹cm⁻¹ at peak absorbance (550 nm) for the compound in this spectrum if the path length of the expriment is 1.00 cm. (Mircomolar to molar conversion: 1.0 μM = 1.0 × 10⁻⁶ M)
The acid H,CO, decomposes to some extent in water to produce CO, gas. What should you expect to observe when the ingredients In an antacid react with HCI to produce H₂CO₂?
What is the dewpoint temperature when the dry-bulb temperature is 12°C and the wet-bulb temperature is 7° C. A. 1°C B. -5°C C. 6°C D. 4°C
48.6 grams of magnesium react with 0.25M hydrochloric acid solution. How many liters od the solution would be needed to create 44.8L of hydrogen gas that occurred at STP
Look at the atoms of the molecules used for london dispersion forces and diople-dipole forces. What do you notice about the difference in these atoms and waht explanation do you have for why that difference leads to different intermolecular forces?
A chemist carefully measures the amount of heat needed to raise the temperature of a 223.0 g sample of a pure substance from - 1.1 °C to 16.8 °C. The experiment shows that 555. J of heat are needed. What can the chemist report for the specific heat capacity of the substance? Round your answer to 3 significant digits. DJ-B PLEASE HELP
Click on the second link, Electronegativity, to answer the question below. What seeming contradictions to the previous article do you see in the first paragraph of this article? Do you think you can simultaneously trust both articles? Why or why not? Which article do you find more credible?
In a titration, 20 mL of 0.27 M NH3 was titrated with 0.20 M HCl. Calculate the pH of the resulting solution after the addition 0 mL of the acid? (give your answer to two decimal places) (Kb ammonia = 1.8 x 10-5)
