Question

A solution may be a homogeneous or heterogeneous mixture of solute in solvent.
True or False

Answer 1

F

Answer 2

Solution - homogeneous mixture of 2 or more components

Answer 3

i think False also

Answer 4

ok

Answer 5

Which solution is most concentrated:

200 ppm
20 ppt
2 %
All of the above have same concentration

Answer 6

200ppm I believe

Answer 7

ugh damn conversion

Answer 8

– ppt = (g solute / g solution) * 10^3 ppt
– ppm = (g solute / g solution) * 10^6 ppt

Answer 9

The most concentration is the one that has the most amount right

Answer 10

i guess so

Answer 11

Tyndall effect is



passage of light through a solution without scattering
the ability of a suspension to scatter the light (hazing effect)
Creation of white color in solution
settlement of solid particle from a solution

Answer 12

the ability of a suspension to scatter the light (hazing effect)

Answer 13

is light scattering by particles in a colloid or particles in a fine suspension

Answer 14

so yeah u r right i think

Answer 15

What is the molarity of a 5L solution that contains 2.5 moles of HNO3?

5 Molar
2.5 Molar
0.5 Molar
12.5 Molar

Answer 16

molarity= mole/volume

Answer 17

so is 0.5

Answer 18

yes

Answer 19

You have 50 mL of a 0.1M aq. soln. of HCl and have to dilute it to a final volume of 1L. What is the molarity of final solution?

0.01M
0.1 M
50 M
0.005 M

Answer 20

C1V1= C2V2
C1 = 0.1
V1 = 50mL /1000= 0.05L
C2 = X
V2 = 1 L

Answer 21

.005

Answer 22

yes

Answer 23

18 mins left, 6 questions left

Answer 24

Solution properties that depend on the concentration of particles rather than the chemical identity and concentration of solute molecules are called ‘Colligative Properties’

True
False

Answer 25

Colligative properties - properties of
solutions that depend on the concentration
of the solute particles, rather than the
identity of the solute

Answer 26

as u can see its true

Answer 27

Which of the following will do the maximum elevation of boiling point or depression in freezing point?

1 mol of NaCl
1 mol of Na3PO4
1 mol of Na2SO4
1 mol of sugar

Answer 28

NaCl

Answer 29

idk this one T_T

Answer 30

What is the osmotic pressure of 0.5 molar NaCl solution at 25 oC?

(R = 0.0821 L.atm/K.mol); pi = MRT (T in Kelvin)

2.4 atm
2.05 atm
24.5 atm
Need more data to calculate

Answer 31

what is this --> pi = MRT

Answer 32

Yeah I get 11.0835. Im doing something wrong

Answer 33

o.5*0.0821* (25+273)

Answer 34

12.2329

Answer 35

tcheh weird T_T

Answer 36

what is 25C in kelvins

Answer 37

isn't 273 + 298?

Answer 38

no
its 25+ 273

Answer 39

Colloidal suspensions contain solute particles of 1 nm -200 nm size that are not uniformly distributed.

True
False

Answer 40

T

Answer 41

pi = iMRT !!
idk whats i tho

Answer 42

How many grams of glucose are needed to make its 15% (m/V) solution in 750 mL of water?

15 g glucose
750 g glucose
150 g glucose
112.5 g glucose

Answer 43

and yeah i think the previous one is true

Answer 44

5mins left

Answer 45

ugh 15/100= 0.15 m/V
i think
0.15= m/V
m= 0.15*V

Answer 46

A saturated solution is a dynamic equilibrium between the process of dissolution and precipitation

True
False

Answer 47

so im getting 112.5 g

Answer 48

False

Answer 49

For proper cell functions to happen, cells need to be maintained in



Hypertonic solutions
Isotonic Solutions
Hypotonic solutions
any of the above

Answer 50

Isotonic Solutions

Answer 51

yes

Answer 52

Done

Answer 53

I keep messing up 3 always

Answer 54

ugh >.>

Answer 55

3 mistakes?

Answer 56

yes

Answer 57

what are they?

Answer 58

in which question

Answer 59

it doesn't show until wednesday

Answer 60

ughhh

Answer 61

3 wrong out of?

Answer 62

15

Answer 63

wait. That is wrong

Answer 64

20% is wrong
T_T

Answer 65

ai?

Answer 66

If there are only 12 questions, why it says out of 15 unless some are 2 points

Answer 67

o.o

Answer 68

yes

Answer 69

whatever still 20% is lost hhh

Answer 70

I know. I can't make above 90

Answer 71

T_T im sorry

Answer 72

thats ok.

Answer 73

I'll go to eat

Answer 74

aye..