Question 7 of 20 Submit What is the concentration of sodium ions in 0.300 M Na...
Question 19 of 20 Submit What is the concentration of sodium ions in 0.300 M Na2CO3? L23 4 5 6 + x 100 Tap here or pull up for additional resources
Question 11 of 20 Submit What volume (in mL) of 0.300 M HCl would be required to completely react with 5.00 g of Al in the following chemical reaction? 2 Al(s) 6 HCl(aq)2 AICI (aq) 3 H2 (g) mL 1 2 3 X 4 5 6 C 7 8 +- x 100 Tap here or pull up for additional resources
Question 25 of 37 Submit The concentration of the hydronium ion in an aqueous solution at 25°C is 0.0054 M. What is the concentration of the hydroxide ion? M 1 3 x N 4 5 6 с 7 8 9 +/- 0 x 100 Tap here or pull up for additional resources
Question 18 of 20 Submit What is the frequency of green light that has a wavelength of 547 nm? (c 3.00 x 108 m/s) 22.79 2 1 4 6 C 7 8 9 x 100 +- 0 Tap here or pull up for additional resources LO
Question 20 of 64 Submit What is the frequency of green light that has a wavelength of 531 nm? (c = 3.00 x 108 m/s) 1 4 2 5 3 6 +/- 0 x 100 Tap here or pull up for additional resources
Question 19 of 20 Submit What is the frequency of a photon if the energy is 6.17 x 10-19 J? (h = 6.626 x 10-34 J·s) 3 4 5 8 7 +/- 9 0 x 100 Tap here or pull up for additional resources
Question 22 of 22 Submit Solid sodium reacts with liquid water to form hydrogen gas according to the equation 2 Na(s) + 2H2O(I) > 2 NaOH(aq) + H2(g) What is the pressure of hydrogen gas in the 20.0 L headspace of a reactor vessel when 1.00 kg sodium is reacted with excess water at 50.0°C? atm 2 3 x 4 6 8 7 +/- 9 0 x 100 Tap here or pull up for additional resources
Question 15 of 20 Submit The percent by mass of methanol (MM 32.04 g/mol) in an aqueous solution is 22.3%. What is the molality of the methanol solution? 1 2 3 X 4 5 6 C 7 8 +- x 100 Tap here or pull up for additional resources
Question 20 of 20 Submit What is the wavelength of blue light that has a frequency of 6.10 x 1014 s="? (C = 3.00 x 108 m/s) m 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 8 of 10 Submit What is the concentration of a solution made with 0.450 moles of KOH in 400.0 mL of solution? 1 2 3 +/- x 100 Tap here or pull up for additional resources