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QUESTION 6 What mass of H3PO4 is needed to completely react with 30. g of Ca? 3 Ca + 2 H3PO4 = Ca3(PO4)2 + 3 H2 O A. 20 g O B.49 g OC.98 g OD. 116 g OE. 74 g

QUESTION 6 What mass of H3PO4 is needed to completely react with 30. g of Ca? 3 Ca + 2 H3PO4 = Ca3(PO4)2 + 3 H2 O A. 20 g O B.49 g OC.98 g OD. 116 g OE. 74 g

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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QUESTION 6 What mass of H3PO4 is needed to completely react with 30. g of Ca? 3 Ca + 2 H3PO4 = Ca3(PO4)2 + 3 H2 O A. 20 g O B.49 g OC.98 g O D. 116 g OE.74 g QUESTION 7 Gas 1 and gas 2 are in containers of equal volume (V1=V2). If T1 = T2, m1 < m2, and n1 = n2, then what is true about the pressure, P, in the two containers? Note: T is the temperature in Kelvins, m is the molecular mass of the gas, n is the quantity of matter in moles. O A. Not enough data to tell. O B. P1 = P2 OC.P1 > P2 O D.P1 = P2, at low temperatures only OE. P1<P2
Transcribed Image Text:QUESTION 6 What mass of H3PO4 is needed to completely react with 30. g of Ca? 3 Ca + 2 H3PO4 = Ca3(PO4)2 + 3 H2 O A. 20 g O B.49 g OC.98 g O D. 116 g OE.74 g QUESTION 7 Gas 1 and gas 2 are in containers of equal volume (V1=V2). If T1 = T2, m1 < m2, and n1 = n2, then what is true about the pressure, P, in the two containers? Note: T is the temperature in Kelvins, m is the molecular mass of the gas, n is the quantity of matter in moles. O A. Not enough data to tell. O B. P1 = P2 OC.P1 > P2 O D.P1 = P2, at low temperatures only OE. P1<P2
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