Question

1. Which of the following is an accurate description of pressure
a. Pressure is measured when gas molecules react
b. Pressure is measured when gas molecules expand
c. Pressure is measured when gas molecules collide
d. Pressure is measured when gas molecules move faster

Answer 1

please help @waxynaveed

Answer 2

is this connexus academy chemistry?

Answer 3

yes

Answer 4

chemistry B?

Answer 5

yes do u hve the answer, final exam

Answer 6

i cna help u :)

Answer 7

c is the answer but can u help me as well

Answer 8

ill medal and fan for all the answers plz

Answer 9

ill help u but u have to do something for me too okay?

Answer 10

deal?

Answer 11

@helpplease98

Answer 12

ok wut

Answer 13

the labs, send me all ur lab data I need it. I said to my teacher that I'll email him all the labs. Send me ur labs, because I dont want to spend hours getting the supplies, and doing the experiments

Answer 14

upload them to uppit.com

Answer 15

i did this before with other people last semester

Answer 16

will u do it? and I'l help u with ur final :) :)

Answer 17

i can give u the plastics one, i ddnt do good on the other ones

Answer 18

if u did bad on them still sned me them, send me all, go to ur gradebook and redownload, then u can upload them ehre if u want

Answer 19

once u do that ill help u with ur final exam and answer them for u

Answer 20

chemB Plastics ptf1 (2).JPG

Answer 21

attach file below

Answer 22

it didnt show up for me the file, only the name did

Answer 23

But @helpplease98 just go to your Chemistry gradebook, click the grade you got for each lab. A window should open up, click the name of your Lab document name, it'll ask you to download it. Click yes. Do that for all of them. Then upload them to openstudy here by clicking attach file

Answer 24

did it work

Answer 25

yes what did u get on the plastics lab?

Answer 26

25/27

Answer 27

Good, now please sjust send me:
Factors that Affect the Rate of a Reaction
Heat of Combustion
Cabbage Juice Titration Lab
Virtual Titration
Gas Pressure-Volume Relationship Virtual Lab

and thats it

Answer 28

and go ahead post exam questions ill answer them for u

Answer 29

i ddnt do heat of combusiton

Answer 30

thats fine jujst send me the rest

Answer 31

8/22

Answer 32

15/22

Answer 33

i mean 15/20

Answer 34

thats the RAte REaction one

Answer 35

wait why did he give u 15/20 what did he say in the comments in gradebook

Answer 36

it was 15/25 , my bad and this is what he said, Your notes for your experiment look good, however the point of this lab was to observe different variables that could affect the rate of a chemical reaction including temperature, surface area, concentration and catalysts. If you would like to redo this lab, please watch and follow along with the recording posted on the Message Board -> Lab Help section.


im sending the titration lab in this message to 16/20

Answer 37

and on the titraiton alb he gave u 16/20 because u didnt fill out the solution part of the table am i right?

Answer 38

yup

Answer 39

oh ok

Answer 40

Gas Pressure-Volume Relationship

Answer 41

25/25

Answer 42

excellent:)

Answer 43

2. As the temperature of a container decreased
a. The kinetic energy increases which increases the pressure
b. The kinetic energy increases which decreases the pressure
c. The kinetic energy decreases which increases the pressure
d. The kinetic energy decreases which decreases the pressure
3. According to the kinetic molecular theory, which of the following states of matter are particles in motion
a. Liquids only
b. Solids and liquids
c. Solids, liquids, and gases
d. Solids only
4. Which of the following states of matter means “dissolved in water”?
a. (s)
b. (l)
c. (g)
d. (aq)
5. After a liquid’s vapor pressure equals the atmospheric pressure
a. The liquid boils
b. The liquid melts
c. The liquid freezes
d. The liquid condenses
6. Please convert 318 K to °C.
a. 18 °C
b. 45 °C
c. -110 °C
d. 591 °C
7. If the temperature of 25.0 L of gas at 30 °C rises to 50 °C, what is the new volume of the gas if the pressure is
constant?
a. 23.4 L
b. 26.6 L
c. 41.6 L
d. 15.0 L

8. What is the pressure exerted by 1.4 moles of a gas with a temperature of 25 °C and a volume of 6.4 L?
a. 541 kPa
b. 45.5 kPa
c. 224 kPa
d. 321 kPa
9. Vegetable oil and water will not form a solution because
a. Water is non-polar and oil is non-polar
b. Water is non-polar and oil is polar
c. Water is polar and oil is non-polar
d. Water is polar and oil is polar
10. If the amount of solute present in a solution is equal to the maximum amount that can be dissolved, the solution
is said to be
a. Concentrated
b. Unsaturated
c. Super saturated
d. Saturated
11. Which of the following correctly expresses concentration of a solution
a. 4.5 M NaCl
b. 1.87 moles / L Ba(OH)2
c. [7.32 x 10-2] KNO3
d. All of the above
12. What is the molarity of a solution that contains 85 g NaOH in 2.5 L solution?
a. 0.425 M
b. 0.850 M
c. 0.188 M
d. 0.376 M
13. Things that are basic generally taste
a. Bitter
b. Sweet
c. Sour
d. Salty
14. Which of the following is the correct formula for a neutralization reaction?
a. Zn + 2HCl  ZnCl2 + H2
b. 2KOH + Ba  Ba(OH)2 + 2K
c. 2HNO3 + Mg(OH)2  Mg(NO3)2 + 2H2O
d. FeCl3 + K3SO4  KCl + FeSO4 + 3KCl

15. A Brønsted-Lowry base is
a. A proton (H+) donor
b. A proton (H+) acceptor
c. An electron-pair donor
d. An electron-pair acceptor
16. If the [H+] = 4.57 x 10-11, the solution is considered
a. Acidic
b. Basic
c. Neutral
d. Cannot be determined
17. Chemical reactions that are endothermic
a. Destroy energy and feels cool to the touch
b. Releases energy and feel warm to the touch
c. Transfers energy and feels warm to the touch
d. Absorbs energy and feels cool to the touch
18. The graph to the right represents
a. An endothermic reaction
b. An equilibrium reaction
c. An exothermic reaction
d. A neutralization reaction
19. Increasing the Molarity of a solution increases the rate of a reaction because
a. There are more solute molecules for the reaction
b. There are more solvent molecules for the reaction
c. There is more kinetic energy causing more collisions for the reaction
d. There is less kinetic energy causing more collisions for the reaction
20. To help speed up a reaction, you can lower the activation energy by
a. Increasing the temperature
b. Increasing the pressure
c. Increasing the surface area
d. Adding a catalyst
21. How much energy does an copper sample absorb as heat if its specific heat is 0.384 J / g · °C, the mass is 6.50 g,
and it is heated from 15 °C to 30 °C?
a. 37.4 J
b. 0.166 J
c. 0.886 J
d. 6.00 J

22. At equilibrium, the rate of the forward reaction compared to the reverse reaction is
a. Higher
b. The same
c. Lower
d. Cannot be determined
23. Which of the following changes below will cause the reaction to shift to the right?
3H2 (g) + N2 (g) ↔ 2NH3 (g) + Heat
a. Addition of NH3 (g)
b. Removal of N2 (g)
c. Addition of H2 (g)
d. Addition of heat
24. Which of the following means the reaction favors the reactants more than product?
a. Keq = 1
b. Keq > 1
c. Keq < 1
d. None of the above
25. Which of the following states of matter has the lowest level of entropy?
a. (s)
b. (l)
c. (g)
d. (aq)
26. In reduction, atoms
a. Gain e- to become more positive
b. Gain e- to become more negative
c. Lose e- to become more positive
d. Lose e- to become more negative
27. Which of the following reactions correctly demonstrated an oxidation reaction?
a. Fe3+ + 3e-  Fe
b. e- + K+  K
c. 2e- + Zn2+  Zn
d. Cu  Cu2+ + 2e-
28. What are the oxidation numbers in the compound SO3
-2?
a. S = +4, O = -2
b. S = +4, O = -1
c. S = +6, O = -2
d. S = +6, O = -1

29. How does bromines oxidation number change in the following reaction
2K + Br2  2KBr
a. Bromines oxidation number changes from -2 to -1
b. Bromines oxidation number changes from -2 to +1
c. Bromines oxidation number changes from 0 to -1
d. Bromines oxidation number changes from 0 to +1
30. In a redox reaction, NO2 is changed to NO3. How many electrons must be gained/lost by N?
a. One lost
b. One gained
c. Two lost
d. Two gained
31. Which of the following is the correct and balanced formula for the reduction of copper?
a. Cu2+  Cu
b. Cu2+ + 2e-  Cu
c. Cu + 2e-  Cu2+
d. Cu  Cu2+ + 2e-
32. Highly reactive metals have more tendency to undergo
a. Reduction
b. Neutralization
c. Synthesis
d. Oxidation
33. In electrochemical cells, reduction takes place within
a. The half-cell
b. The anode
c. The cathode
d. The anode or the cathode
34. Carbon is a unique atom in Chemistry because
a. It can have up to four covalent bonds
b. It can form into long chains
c. It can form ring structures
d. All of the above
35. Isomers are compounds that have
a. The same molecular formula but different structures
b. The same molecular formula and the same structure
c. Different molecular formula and different structures
d. Different molecular formula and the same structure

36. When naming simple hydrocarbons, the prefix used for molecules with 4 carbons is
a. Meth-
b. Eth-
c. Prop-
d. But-
37. Which of the following is a correct statement?
a. Propene contains two carbons and at least one triple bond
b. Methane contains 3 carbons and at least one double bond
c. Ethyne contains two carbons and at least one triple bond
d. Butyne contains 3 carbons and at least one double bond
38. When a hydrocarbon is saturated, it means that
a. It has all possible hydrogens
b. It lost a pair of hydrogens
c. It has all possible carbons
d. It lost a pair of carbons
39. Which of the following are large molecules that are made of many small, individual units
a. Monomers
b. Polymers
c. Copolymers
d. Linear polymers
40. All of the following are examples of polymers except
a. Water bottles
b. Plastic spoons
c. Tupperware
d. Wooden tables
41. To form an isotope, an atom must
a. Gain or lose protons
b. Gain or lose electrons
c. Gain or lose nuclei
d. Gain or lose neutrons
42. All of the following are forms of radioactive decay except
a. Beta decay
b. Theta decay
c. Gamma decay
d. Alpha decay

43. In a nuclear reaction, unstable atoms change their number or protons and/or neutrons and
a. Give off large amounts of energy, and increase stability
b. Give off large amount of energy, and decrease stability
c. Give off small amounts of energy, and increase stability
d. Give off small amounts of energy, and decrease stability
44. Identify the type of radioactive decay:
a. Beta decay
b. Delta decay
c. Alpha decay
d. Sigma decay
45. Which form of radioactive decay gives of very little radiation and can be protected from by using most forms of
clothes?
a. Alpha decay
b. Theta decay
c. Beta decay
d. Delta decay
46. The half-life of an isotope is the amount of time required for
a. Very little amounts of the sample to undergo radioactive decay
b. Some of the sample to undergo radioactive decay
c. Half-the sample to undergo radioactive decay
d. All of the sample to undergo radioactive decay
47. Radon-222 has a half-life of about 4 days. If we started with 32.8 g Rn-222, how much would remain after 28
days?
a. 8.20 g Rn-222
b. 1.17 g Rn-222
c. 0.513 g Rn-222
d. 0.256 g Rn-222
48. The waste produced by nuclear power plants
a. Is easily recycled and can resupply the reactor easily
b. Is difficult to recycle and must be stored in shielding units
c. Is difficult to produce and not something to worry about
d. Is easily disposed of with no chance of contamination

Answer 44

we still have a deal right

Answer 45

do u have all the answers

Answer 46

2. is D

Answer 47

for my final exam they dont show u the answers anymore, they changed it for my school class thing for science

Answer 48

so u dont know

Answer 49

some of them are on the ones i cna look at like number 4

Answer 50

so u know #4

Answer 51

D

Answer 52

do u have geometryB

Answer 53

yes i finsihed geomery B

Answer 54

great u can give me the answers to the Circles unit test

Answer 55

u need answers to final exam?

Answer 56

plzz

Answer 57

thats the one before the exam

Answer 58

no prob

Answer 59

see if u can download tht

Answer 60

shoot dferent questions

Answer 61

some of them r the same look closely

Answer 62

yea ur right, would u help me with the Geo exam too or nah

Answer 63

sure its all multiple choice tho

Answer 64

btw

Answer 65

here is another version of the circles unit test maybe this is the same test

Answer 66

is it the same test?

Answer 67

idk yet,

Answer 68

what do u mean? its loading?

Answer 69

no cuz i ddnt finish the circles one

Answer 70

that isnt the final exam that is another version of the circles unit test that i gave u

Answer 71

yea some are

Answer 72

i need the answer to the 23-26, on the unit 5 one

Answer 73

unit 5 study guide?

Answer 74

yea but i can just get them out of livelesson, and btw my exam is 53 questions,all multipe choice

Answer 75

same as me

Answer 76

ill give u the final exam

Answer 77

do we have a deal?

Answer 78

wait let me see

Answer 79

u got it?

Answer 80

we have a deal

Answer 81

who r u lol

Answer 82

helplease show me the study guide hurry up

Answer 83

its me

Answer 84

ty :) now unit 2, 3, 4 and 5

Answer 85

scrooge why did u scan these? do u have a scan version? if not thats okay

Answer 86

why didnt u scan these lol? doesnt ur teacher care?