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HORMONE BALANCE 111 Practice Exam two

1 . Just how many skin moles of H+(aq) ions are present in 1 . 25 T of zero. 75 Meters nitric acidity? В A. 0. 60 mol

B. 0. 75 mol

C. 0. 94 mol

G. 1 . 7 mol

At the. 1 . 9 mol

installment payments on your Which of the following will be least soluble in drinking water? В

A. potassium sulfate, K2SO4

N. ammonium nitrate, NH4NO3

C. chloromethane, CH3Cl

D. calcium supplements chloride, CaCl2

E. ethanol, C2H6O

several. Select the medications that varieties when the next reactants happen to be mixed. Mg(CH3COO)2(aq) + LiOH(aq) В

A. LiCH3COO

W. Li(CH3COO)2

C. MgOH

Deb. Mg(OH)2

Elizabeth. CH3OH

4. Select the medications that forms when aqueous lead(II) nitrate reacts with aqueous sodium sulfate. В A. NaNO3

B. Na2NO3

C. PbSO4

D. Pb2SO4

E. PbS

5. Consider the reaction:

3Co2+(aq) + 6NO3ВЇ(aq) + 6Na+(aq) + 2PO43ВЇ(aq)

Co3(PO4)2(s) + 6Na+(aq) + 6NO3ВЇ(aq)

Identify the net ionic formula for this response. В

A. Na+(aq) & NO3ВЇ(aq) NaNO3(aq)

B. 3Co2+(aq) + NO3ВЇ(aq) + Na+(aq) + 2PO43ВЇ(aq) Co3(PO4)2(s) & NaNO3(aq) C. 3Co2+(aq) + 6NO3ВЇ(aq) + 6Na+(aq) & 2PO43ВЇ(aq) Co3(PO4)2(s) + 6NaNO3(aq) D. 3Co2+(aq) + 2PO43ВЇ(aq) Co3(PO4)2(s)

E. None of such choices is correct. В

six. A baseВ

A. triggers phenolphthalein sign to change coming from colorless to pink. N. donates a proton within a proton transfer reaction.

C. accepts bad particals in an electron transfer response.

D. produces hydrogen ions in option.

E. really does none of the choices.

several. Ammonia, NH3, produces hydroxide ions in aqueous solution byВ A. donating a proton to an acid molecule.

B. giving a proton to a drinking water molecule.

C. donating a hydrogen ion to a normal water molecule.

M. accepting an electron coming from an acid molecule.

E. accepting a proton from a water molecule.

almost 8. Select the ideal statement in relation to the following reaction: 2MnO2(s) & KClO3(aq) + 2KOH(aq) 2KMnO4(aq) + KCl(aq) + H2O(l)В A. Mn in MnO2 is oxidized.

B. U in KClO3 is the oxidizing agent.

C. K in KClO3 is the reducing agent.

D. They would in KOH is oxidized.

E. Craigslist in KClO3 is the reducing agent.

9. In a redox reaction, electrons are transferredВ

A. in the substance staying oxidized to the reducing agent.

B. from the oxidizing agent to the minimizing agent.

C. from the substance being decreased to the oxidizing agent.

M. from the material being oxidized to the material being lowered. E. from your substance getting reduced to the substance staying oxidized. В

10. Estimate the oxidation process number of sulfur in salt metabisulfite, Na2S2O5. В A. -2

N. +2

C. +4

D. +5

At the. None of these choices is proper.

11. The oxidation numbers of P, T and Craigslist in H2PO2ВЇ, H2S and KClO4 are, respectivelyВ A. -1, -1, +3

N. +1, -2, +7

C. +1, +2, +7

G. -1, -2, +7

Electronic. -1, -2, +3

doze. Select the category for the subsequent reaction.

2Na(s) + 2H2O(l) 2NaOH(aq) + H2(g)В

A. precipitation

M. acid-base

C. redox

G. combination

At the. None of those choices is proper.

13. A gas blend consists of equal masses of methane (molecular fat 16. 0) and argon (ar) (atomic fat 40. 0). If the partial pressure of argon can be 200. torr, what is the pressure of methane, in torr? В A. 70. 0 torr

B. two hundred. torr

C. 256 torr

D. five-hundred. torr

Elizabeth. 556 torr

14. A weather as well as the was initially by a pressure of zero. 950 atm, and its volume was thirty-five. 0 D. The pressure decreased to 0. 750 atm, with out loss of gas or difference in temperature. The thing that was the difference in the volume? В A. elevated by forty-four. 3 M

B. increased by on the lookout for. 3 T

C. elevated by several. 4 T

D. lowered by twenty-seven. 6 M

E. decreased by 7. 4 M

15. An example of nitrogen gas in 298 K and 745 torr includes a volume of thirty seven. 42 M. What amount will it inhabit if the pressure is increased to 894 torr at constant temperature? В A. 22. three or more L

W. 31. a couple of L

C. 44. on the lookout for L

Deb. 112 L

E. 380 L

16. A co2 sample weighing 44. 0 g occupies 32. 68 L for 65C and 645 torr. What is it is volume by STP? В A. twenty two. 4 T

B. 31. 1 L

C. thirty four. 3 M

D. 35. 2 T

E. 47. 7 T

17. Calcium mineral hydroxide, which in turn reacts with carbon dioxide to create calcium carbonate, was used by ancient Aventure as mortar in...

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