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1.00 kg = 2.205 lbs Q8.1 2 Points 6.275 mol He to atoms: Enter your answer...
1&2 ?? 0.425 gal to L Enter your answer here atoms 6.275 mol He to atoms: Enter your answer here atoms
Q8.4 2 Points 75.2 L of 02 at STP to mol Enter your answer here mol
7. value 0.00 points 3 attempts left Check my work Calculate the number of mol corresponding to 19.0 g Be. Enter your answer in the provided box. mol Be value 1.00 points 3 attempts left Check my work Calculate the number of mol corresponding to 0.065 kg Si. Enter your answer in the provided box. mol Si 9. value 0.00 points 3 attempts left Check my work What is the average molar mass of the following elements? Be sure to...
Calculate the number of mol corresponding to 0.076 kg Si. Enter your answer in the provided box. 1 mol Si
2 attempts left Check my work Be sure to answer all parts. Determine the number of carbon atoms in 1.00 kg of carbon dioxide. X 10 atoms (Enter your answer in scientific notation.) Determine the number of oxygen atoms in 1.00 kg of carbon dioxide. x 10 atoms (Enter your answer in scientific notation.) Calculate the mass of potassium nitrate that contains 1.00 mol of oxygen atou References eBook & Resources Multipart Answer
Enter your answer in the provided box. A buffer that contains 1.00 M base, B, and 0.800 M of its conjugate acid, BH', has a pH of 9.300. What is the pH after 0.0045 mol of HCl is added to 0.550 L of this solution? pH =
Enter your answer in the provided box. A buffer that contains 1.00 M base, B, and 0.750 M of its conjugate acid, BH, has a pH of 9.600. What is the pH after 0.0055 mol of HCl is added to 0.400 L of this solution? pH =
calculate the mass in g corresponding 2.100 mol H2O < Question 2 (of 8) value 1.00 points 3 attempts left Check my work Calculate the mass in g corresponding to 2.100 mol H,0. Enter your answer in the provided box. TH,0 Type here to search of 9 e FIO # A % A & m
1.00 points 3 attempts left Check my work 2 Enter your answer in the provided box. The rate constant for the second-order reaction: 2NOBr(g) → 2NO(g) + Br2(g) is 0.800-s) at 10°C. Starting with a concentration of 0.86 M, calculate the concentration of NOBr Report problem Hint Solution Guided Solution after 67 s. Be sure to report your answer to the correct number of significant figures. References eBook &Resources
value 1.00 points 1 attempts left Check my work Enter your answer in the provided box. A buffer solution is prepared in such a way that the concentration of propanoic acid is 1.92 x 10 Mand the concentration of sodium propanoate is 1.51 x 10° M. If the buffer equilibrium is described by CH3COOH(aq) + H20(1) = H2O*(aq) + CH3C00 (aq) Gul propanoic acid propanoate ion with K = 1.34 x 105 calculate the pH of the solution. pH =...