Ammonium phosphate (NH,),PO,) is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid (H, PO,) with liquid ammonia. Calculate the moles of ammonia needed to produce 2.1 mol of ammonium phosphate. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. A chemist must prepare 450. mL of 35.0 mM aqueous potassium dichromate (K, Cr,0,) working solution. She'll do this by pouring out some 0.490 M aqueous potassium dichromate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the potassium dichromate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits. Oml

Ammonium phosphate (NH,),PO,) is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid (H, PO,) with liquid ammonia. Calculate the moles of ammonia needed to produce 2.1 mol of ammonium phosphate. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. A chemist must prepare 450. mL of 35.0 mM aqueous potassium dichromate (K, Cr,0,) working solution. She'll do this by pouring out some 0.490 M aqueous potassium dichromate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the potassium dichromate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits. Oml

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter3: Molecules, Moles, And Chemical Equations

Section: Chapter Questions

Problem 3.37PAE: 3.37 If atypical grain of sand occupies a volume of 1.3 × 10-4 cm3, what is the volume (in cm3) of 1...

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