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Chemistry > Chemistry Review Pages > Flashcards

Chemistry Review Pages Flashcards

1
Q

Pressure goes up

Temperature ____

A

Goes up

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2
Q

Pressure goes up

Volume _____

A

Goes down

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3
Q

Temperature goes up

Volume ______

A

Goes up

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4
Q

Standard temperatures

A

0^C and 273K

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5
Q

Standard pressures

A

101.3 kpa, 14.7 psi, 760 mmHg, 1 atmo

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6
Q

Convert the following:

25^C=
455K=
47^C
100K=

A

298K
182^C
320K
-173^C

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7
Q

Bromine vapor occupied a volume of 2.5 L at 57^C. To reduce the volume to 2.3 L, what must the temperature be adjusted to?

A

30.6^C

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8
Q

Under standard conditions, a volume of a helium balloon occupies 10L. What volume would the balloon be under 725 mmHg of pressure?

A

10.5L

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9
Q

A quantity of air has a volume of 30.8mL. The temperature is at 24^C and the barometer records the pressure 13 psi. What will the pressure be if the temperature was cooled to -57^C and the volume didn’t change?

A

9.45 psi

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10
Q

Is melting ice endothermic or exothermic ?

A

Endothermic

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11
Q

Is freezing ice endothermic or exothermic?

A

Exothermic

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12
Q

If you mix 2 substances in a test tube and the test tube feels WARM, how would you describe the reaction?

A

Exothermic

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13
Q

How much energy is absorbed by 100g of water that changed from 20^C to 40^C? (Specific Heat= 4.18 j/g^C)

A

8,360J

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14
Q

To what temperature does a 500g chunk of aluminum go to when it starts at 20^C and absorbs 3000 joules of energy? (Specific Heat= 0.89 j/g^C)

A

26.74^C

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15
Q

Which will take longer to raise the temperature: 10g of water or 10g of aluminum ? Explain

A

The water will take longer to heat because it has a higher specific heat

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16
Q

What is the molarity of a solution containing 1.4 moles of KCl dissolved in 2.6L of solution?

A

0.54M

17
Q

How many grams of table salt (NaCl) are needed to make 3.4L of a 0.06M solution?

A

11.92g NaCl

18
Q

What does “like dissolves like” mean?

A

Polar dissolves polar

Nonpolar dissolves nonpolar

19
Q

Is HBr an acid or base?

A

Acid

20
Q

Is NaCl an acid or base?

A

Neither. It’s neutral

21
Q

NaOH: acid or base?

A

Base

22
Q

H2SO4: acid or base?

A

Acid

23
Q

If a substance is neutral, what is it’s pH?

A

7

24
Q

If a substance had a pH of 4, is it an acid, base, or neutral?

A

Acid

25
Q

What are the products of a neutralization reaction?

A

Water and Salt

26
Q

Complete:

NaOH + HCl –>

A

H2O + NaCl

27
Q

If it takes 10mL of 1.0M NaOH to neutralize 20mL of HCl, what is the concentration of HCl?

A

0.5

28
Q

How much 2M NaOH is needed to completely neutralize 100mL of a 0.5M H2SO4?

A

50mL

29
Q

222 Rn –> 218 Po + _____
86 84

What kind of particle is it?

A

4 He
2

Alpha particle

30
Q

Write the nuclear equation for

“Copper-66 undergoes beta decay”

A

66 Cu –> 66 Zn + 0 e -

29 30 -1

31
Q

How much of a 100g sample of Au is left after 8.10 days if it’s half-life is 2.70 days?

A

12.5g Au

32
Q

Lewis Dot Structure for Carbon

A

•
• C •
•

33
Q

What is a polymer?

A

A chain of monomers

34
Q

Is the following equation endothermic or exothermic?

NH4Cl + Heat <==> NH3 + HCl

A

Endothermic

35
Q

What are 3 ways you can INCREASE the following reaction?

2CO + O2 –> 2CO2

A
  1. Add heat
  2. Break into smaller pieces
  3. Add more CO or O2
36
Q

What is the molar mass of ZnCl2?

A

136.29g ZnCl2

37
Q

If 65g of HCl is reacted with excess Zn, how much ZnCl2 will you produce?

A

121.5g ZnCl2

Chemistry (8 decks)

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