Question 7 What is the charge of the Nb ions in Nb2S5 ? Answer Enter your...
Question 6 What is the charge of the Mo ions in MoO3 ? Answer Enter your answer here
Question 8 What is the oxidation state (charge) on Mn in LiMnO2 ? Answer Enter your answer here
Question 6 What is the oxidation state (charge) on the Mn atom in Mn203 ? Answer Enter your answer here
Enter your answer in the provided box. The concentration of lead ions (Pb2) in a sample of polluted water that also contains nitrate ions (NO3 ) is determined by adding solid sodium sulfate (Na2SO4) to exactly 500 mL of the water. Calculate the molar concentration of Pb2* if 0.00275 g of NazSO4 was needed for the complete precipitation of lead ions as Pbso4
Enter your answer in the provided box. The concentration of lead ions (Pb2) in a sample of...
Question 7 Your answer is partially correct. Try again. What is the total charge of 111 kg of electrons? Number 1950000000000 units The number of significant digits is set to 3; the tolerance is +/-1 in the 3rd significant digit Click if you would like to Show Work for this question: Open Show Work
Calculate the number of potassium ions in 2.21 g of potassium nitrate. Enter your answer in scientific notation.
Calculate the number of H− ions in 85.3 g of BaH2. Enter your answer in scientific notation Please show work
Question 7 of 20 Submit What is the concentration of sodium ions in 0.300 M Na SOL? L23 4 5 6 + x 100 Tap here or pull up for additional resources
Warm-Up 6-7 (similar to) Enter your answer in the answer box and then click Check Answer All parts s 蹋。 type here to search F4 FS F6 F7 F8
Question 4 A 3.86 nC charge is placed at the origin (x 0.0, y 0.0). What is the y-component of the electric field at the location (x -6.0 m, y 8.0 m) due to the charge at the origin? . У Enter answer here N/C 0.2N/CX Answer Your