3.75 Elemental phosphorus occurs as tetratomic molecules, P4. What mass (g) of chlorine gas is needed to react completely with 455 g of phosphorus to form phosphorus pentachloride?

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3.71 Potassium nitrate decomposes on heating, producing potas-
sium oxide and gaseous nitrogen and oxygen:
ammor
4KNO3(s) → 2K½O(s) + 2N2(g) + 502(g)
shows
after r
To produce 56.6 kg of oxygen, how many (a) moles of KNO3 and
(b) grams of KNO3 must be heated?
3.72 Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas
form chromium(III) sulfide and water:
Cr,O3(s) + 3H,S(g)
Cr,S3(s) + 3H2O(1)
>
To produce 421
(b) grams of Cr,03 are required?
of Cr,S3, how many (a) moles of Cr,O3 and
3.73 Calculate the mass (g) of each product formed when 43.82 g
of diborane (B2H6) reacts with excess water:
3.8
mo
B,H,(g) + H2O(1)
H;BO3(s) + H2(g) [unbalanced]
>
Ho
3.74 Calculate the mass (g) of each product formed when 174 g of
silver sulfide reacts with excess hydrochloric acid:
CO
Ag,S(s) + HCI(aq)
AgCl(s) + H2S(g) [unbalanced]
3.5
of
3.75 Elemental phosphorus occurs as tetratomic molecules, P4.
What mass (g) of chlorine gas is needed to react completely with
455 g of phosphorus to form phosphorus pentachloride?
3.76 Elemental sulfur occurs as octatomic molecules, Sg. What
mass (g) of fluorine gas is needed to react completely with 17.8 g
of sulfur to form sulfur hexafluoride?
Transcribed Image Text:achembook.ir/edu 3.71 Potassium nitrate decomposes on heating, producing potas- sium oxide and gaseous nitrogen and oxygen: ammor 4KNO3(s) → 2K½O(s) + 2N2(g) + 502(g) shows after r To produce 56.6 kg of oxygen, how many (a) moles of KNO3 and (b) grams of KNO3 must be heated? 3.72 Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas form chromium(III) sulfide and water: Cr,O3(s) + 3H,S(g) Cr,S3(s) + 3H2O(1) > To produce 421 (b) grams of Cr,03 are required? of Cr,S3, how many (a) moles of Cr,O3 and 3.73 Calculate the mass (g) of each product formed when 43.82 g of diborane (B2H6) reacts with excess water: 3.8 mo B,H,(g) + H2O(1) H;BO3(s) + H2(g) [unbalanced] > Ho 3.74 Calculate the mass (g) of each product formed when 174 g of silver sulfide reacts with excess hydrochloric acid: CO Ag,S(s) + HCI(aq) AgCl(s) + H2S(g) [unbalanced] 3.5 of 3.75 Elemental phosphorus occurs as tetratomic molecules, P4. What mass (g) of chlorine gas is needed to react completely with 455 g of phosphorus to form phosphorus pentachloride? 3.76 Elemental sulfur occurs as octatomic molecules, Sg. What mass (g) of fluorine gas is needed to react completely with 17.8 g of sulfur to form sulfur hexafluoride?
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