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Grade 12 Chemistry Questions asked by Filo students

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The Solid State 50.

KBr

1 0^{- 5}

mole percent of

SrBr_{2}

. The number of cationic vacancies in

1 g

of KBr crystal is

1 0^{14}

. (Round off to the Nearest Integer). [Atomic Mass :

K : 39.1 u, Br : 79.9 u N_{A} = 6.023 \times 1 0^{23}]

[March 17, 2021 (II)]

Topic:

Solid State

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Views: 5,154

Which of the following alkane will be formed in high yield by Wurtz reaction?

Topic:

Hydrocarbons

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Views: 5,154

Which of the following alkane will be formed in high yield by Wurtz reaction?

Topic:

Hydrocarbons

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Views: 5,673

Which of the following alkane will be formed in high yield by Wurtz reaction ?

Topic:

Hydrocarbons

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Views: 6,043

Draw the products below and show the mechanism. Question 1.

+ 2 CH_{3} OH ⟶ H_{2} SO_{4} (trace)

Topic:

Bonding and Chemical Reactions

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Views: 5,471

Classify the following reactions. [note - each classification can be used more than once or not at all] [Select]

C_{2} H_{6} O (l) + 3 O_{2} (g) \dots 2 CO_{2} (g) + 3 H_{2} O (g)

2 Ni (OH)_{3} \dots Ni_{2} O_{3} + 3 H_{2} O

Double Replacement

Combination/Synthesis \lor SO_{3} (g) + H_{2} O (I) \dots H_{2} SO_{4} (aq)

Topic:

Bonding and Chemical Reactions

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Views: 5,277

15 mL of .5 M Sr(OH)2 is titrated with .5 M HCl, what volume of HCl will be required in order to reach the equivalence point?

Topic:

Bonding and Chemical Reactions

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Views: 5,312

IDEAL GAS CONSTANT E-LAB EXERCISES: 1. A sample of hydrogen gas is collected over water in a flask at

23. 5^{\circ} C

. The pressure in the flask is equilibrated with the atmospheric pressure. The atmospheric (barometric) pressure is reported as

746.7

torr. Determine the pressure of hydrogen gas in the flask.

Topic:

Bonding and Chemical Reactions

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Views: 6,007

2. In a combustion reaction, a sample of carbon dioxide was collected. The following d were reported for properties of this carbon dioxide sample. GIVEN FIND

Mass = 4.157 g P = 856.3 tor V = 2.498 L T = 85. 6^{0} C + 273 = 358.6

P V = nπ

Topic:

Bonding and Chemical Reactions

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Question 10

Views: 5,991

X b Boom Cards! - Play Save Card > Skip InternalPortal Atom HC Classwork Fe CI Fe+ Initial # of each atom on reactants side Milk and Honey Nearpod-Inca Civil boomcards Cl₂- ->> Drag the coefficients to the chemical equation to balance it correctly. Please use a "1" where no coefficient change is needed 1 1 2 2 Final # of each atom on reactants side Atom < ☆ Fe CI Edgenuity-Student... FeCl3 Initial # of each atom on products side s Classroom: 1st pd-. Final # of each atom on products side Bes ✔Submi X Give up

Topic:

Bonding and Chemical Reactions

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Question 11

Views: 5,220

Extra Credit:(5 points): Consider the reaction;

2 NO + O_{2} \to 2 NO_{2}

g NO_{2}

can be produced, when

0.68

NO

is reacted with

0.79

O_{2}

NO_{2}

? b. Based on your results in a, predict which of the two reactants (Nitrogen monoxide or Oxygen) is limiting reactant? c. Explain the reasoning used in part

c

Topic:

Bonding and Chemical Reactions

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Question 12

Views: 5,213

Chrome File Edit View History Bookmarks Profiles Tab Window Help

+

Assignments: 22/FA-CHM-102

\times

탈 Standardization of

NaOH \times

newconnect.mheducation.com TITRATION - STANDARDIZATION OF SODIUM HYDROXIDE

Topic:

The Chemistry of Abiotic Systems & Energy of Chemical Systems

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Question 13

Views: 5,191

4.43

Test (cST): Wrap-Up. Modemism and The American Dream Question 19 of 19 Read the following excerpt from The Great Gatsby: In my younger and more vulnerable years my father gave me some advice that l've been tuming over in my mind ever since: "Whenever you feel like criticizing any one, he told tre. "just remember that all the people in this world havent had the advantages that you've had. Which best esplains how the point of view affects the tone of this passage? A. It convioys some background information about the narrator. B. It iends a self-deprecating sense of humor that makes the narrator credible C. if intioduces the narrator as a detail-oriented commentator on the

Topic:

The Chemistry of Abiotic Systems & Energy of Chemical Systems

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Question 14

Views: 5,767

Question 2 ( 3 points) How many

mL

1 M HCl

solution is needed to prepare

500 mL

0.2 M HCl

500 mL

10 mL

50 mL

100 mL

Question 3 (3 points)

Topic:

Bonding and Chemical Reactions

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Question 15

Views: 5,029

Alabama Real Estate Principles Final Exam v6.0 Alabama Real Estate Principles Final Exam v6.0 Question \#21 of 140 Which of the following is NOT a requirement for a real estate office?

Exterior signs must be plainly and readily visible to the public
If extenior signs are not allowed, the intenor sign must be posted in the entry area and on the door of the office
The name of the company, exactly as it appears on the real estate icense, must be displayed
The brokers name must be prominently displayed on the omice sign

Topic:

Bonding and Chemical Reactions

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Question 16

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How did Phyllis Schlafly affect the event mentioned in the headline?

Her efforts to register young female voters ensured maximum public support for the amendment.
Her aggressive support for the amendment upset so many people that it triggered a backlash against feminism.
She convinced women that the amendment would actually take away some of their rights and privileges.
She lost her seat in the Senate because the voters lost trust in her after the amendment failed.

Topic:

Matter and Energy in Living Systems

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Question 17

Views: 5,095

1 1.1.4 Quiz The Scientific Process Question 6 of 10 Which of the following would be a testable hypothesis for an experiment that compares the health of salmon raised in fish farms to salmon caught in the wild?

Eight wild saimon and eight saimon from a fish farm are examined for diseases.
Do salmon raised in fish farms experience more diseases than wild saimon?
If a salmon is raised in a fish farm, then it may be less healthy than a wild saimon.
Salmon living in the wild experience fewer diseases than saimon raised in fish farms.

Topic:

Structure and Properties of Matter

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Question 18

Views: 5,840

rent.com/free-vocabulary-test-poff/ English Vocabulary Test Please circle the correct answer. A2/Elementary Level 1. "I can't my passport. Have you seen it?" 9. it was

fill
find
regular. outside so we could not see well.
order
offer
noisy
empty
foggy

Topic:

Matter and Energy in Living Systems

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Question 19

Views: 5,461

The weather is today. Let's stay inside." 10. 7it'sin that Peter can't come to the party.i

simple
rich wanted to see him."
awful
clase
type
pity
sign
wish

Topic:

Matter and Energy in Living Systems

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Question 20

Views: 5,871

The man the basketbali into the air. 11. We used the

threw:
checked
lent building. to go to the tenth floor of the
elevator
ceiling

Topic:

Matter and Energy in Living Systems

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