Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ashna

  • 2 years ago

mole concept !

  • This Question is Closed
  1. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes back here :)

  2. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Write your question here..

  3. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea .. okay !

  4. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Calculate the mass of the following : (a) 0.5 mole of CO2. (b) 6.02 * 10^21 molecules of O2. (c) 1 * 10^23 molecules of H2S. (d) 56.8 L of SO2. (e) 1.5 mole of H2SO4.

  5. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I had said to write question here not questions here .. Ha ha ha.. Kidding..

  6. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i don't understand .. what did you want me to do actually ?

  7. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    question means one question. questions means more than one questions.. Leave it.

  8. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh i din see the < S > !

  9. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    its one question my teacher gave !

  10. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    there are many questions like this .. and water will solve everything :p

  11. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i hope so !

  12. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Ha ha ha..

  13. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :)

  14. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so you know this ?

  15. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes...

  16. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so teach !

  17. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    For fist part: Find the molecular mass of \(CO_2\)..

  18. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    *first..

  19. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    molecular mass , mass and molar mass excluding the ( g ) all the same ?

  20. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I will say not to go this way..

  21. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    then ?

  22. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    See now you have studied What is Molar Mass.. Molar mass is mass of 1 mole of any substance. If that substance is CO2 then: Molar Mass is mass of 1 mole of CO2 So here basically you have to find Molar Mass.. For getting molar mass you will find the molecular mass of CO2 first same as you did for NaCl..

  23. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah okay .. so in the question we are asked to find the mass right ?

  24. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    For atoms: we have atomic mass. For molecules we have molecular mass..

  25. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  26. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes.. Molar mass is nothing but mass only. Molar Mass is "Mass" of 1 mole of a substance in grams..

  27. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay :)

  28. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so how to do (a) ?

  29. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    mass of CO2 is 44 g ?

  30. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

  31. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    According to the definition of molar mass: Molar mass is mass of 1 mole right ??

  32. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah !

  33. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    But you have to find for 0.5 mole.. This you got mass for 1 mole.. can you find? for 1 mole it is 44g for 0.5 or half it will be ??

  34. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    0.5 * 44 / 1 ?

  35. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right ?

  36. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yep..

  37. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay :)

  38. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Think logically also.. For 1 it is 44g for half that is 0.5 is nothing but half of 1: for 0.5 it will be 44/2 = 22g. Getting ??

  39. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    partially !

  40. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea yea .. on second thinking i understood !

  41. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i forgot half of 1 is 0.5 !

  42. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    0.5 is 1/2 no ??

  43. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea i got it !

  44. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    This solves first one.. Getting ??

  45. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    dont laugh !

  46. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah :)

  47. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Ha ha ha ha.. Not I am not.. Ha ha ha..

  48. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lol yu are !

  49. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay .. best medicine .. so laugh !

  50. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    e> part is same.. Can you do that ??

  51. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let me try !

  52. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Take your time..

  53. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    mass of 6.023 * 10^23 molecules of O2 = 32 mass of 6.02 * 10^21 molecules of O2 = x cross multiply ?

  54. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Go for last part.. e) part

  55. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  56. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    This I tell you later on..

  57. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  58. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    e part is same as a part. Just try that so that you will completely get it..

  59. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    mass of 1 mole of CO2 = 44 g mass of 1.5 mole of CO2 = ? 44 * 1.5 / 1 = 66 g

  60. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes

  61. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    wrong ?

  62. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes concept is right..

  63. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Dear there is H2SO4 not CO2...

  64. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh .. sorry !

  65. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay let me do with H2SO4

  66. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Do the same for H2SO4..

  67. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I am in no hurry take your time..

  68. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Atomic Mass of H is : 1 Atomic Mass of S is : 28 Atomic Mass of O is : 16..

  69. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    mass of 1 mole of H2SO4 = 98 g mass of 1.5 mole of H2SO4 = x = 98 * 1.5 / 1 = 147 g

  70. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    atomic mass of s = 32 or 28 ?

  71. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes there ?

  72. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I think you are right..

  73. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    My mistake : Atomic Mass of Sulphur is 32..

  74. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  75. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes you have done that correctly: 98 + 49 = 147 g...

  76. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay .. :)

  77. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Now we will do second part b)..

  78. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  79. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    but i did that before right ?

  80. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    is that wrong ?

  81. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes somewhat wrong..

  82. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay .. so teach me :)

  83. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Sere have you remembered this: \[1 Mole (oxygen) = 6.023 \times 10^{23} \; Oxygen \; \; Molecules\]

  84. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay

  85. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    then .. how to do ? are you trying ?

  86. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Oh really very sorry.. You were doing it right

  87. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    really ?

  88. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    \[6.023 \times 10^{23} \implies 32g\] \[1 \implies \frac{32}{6.023 \times 10^{23}}\] \[6.023 \times 10^{21} \implies \frac{32}{6.023 \times 10^{232}} \times 6.023 \times 10^{21} = ??\]

  89. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Oh sorry there is mistake in denominator there power of 10 is 23 and not 232..

  90. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay ..

  91. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    There is mistake in denominator 10 has power 23 and not 232..

  92. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah you did mention it above !

  93. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so 32/100 = 0.32g ?

  94. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes you were going right @ashna Do it in your way if you did not understand my way..

  95. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no both seems the same .. i can understand :)

  96. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yep you are right..

  97. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Now c part is same as b..

  98. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    And there is H2S not O2. Ha ha ha.. Just kidding..

  99. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    mass of 6.02*10^23 molecules of H2S = 34g mass of 1*10^23 molecules of H2S = x 34 * 1*10^23 / 6.02 *10^23 = 34 / 6.02 = 5.6 g

  100. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea this time my eyes are wide :P

  101. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    correct ?

  102. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Ha ha ha.. Yes you are right.. Now tell me what is L there with 56.8 I am not getting that..

  103. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    In part D..

  104. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    liter or litre not sure with the spelling .. !

  105. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Do you have answers with you for all of these??

  106. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    not for everything !

  107. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    or have your teacher given example of How for Liters we find the mass ??

  108. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes .. you want that ?

  109. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes if you can..

  110. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i guess the teacher has done this in class !

  111. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let me check !

  112. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    okay..

  113. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay she's written something like 22.4 L .. What is that ?

  114. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I think I am getting that 22.4 part..

  115. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay !

  116. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Can you wait for just few minutes. I am having breakfast now.. Till then check this: http://www.ausetute.com.au/moledefs.html

  117. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    There check: Ideal Gas Volumes Part..

  118. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Getting @ashna ..

  119. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    YES

  120. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    An ideal gas has Volume = 22.4 L at STP..

  121. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay

  122. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    So: 1 Mole of SO2 = 22.4 L 1L = 64/22.4 56.8 L = 64/22.4 * (56.8? Right ??

  123. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

  124. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Can you do the solvation ??

  125. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay

  126. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Understood ?? How to find all ??

  127. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    162.28 ?

  128. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yep..

  129. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thank you :)

  130. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Welcome dear..

  131. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    okay now .. next question ?

  132. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I am gone.. New post please..

  133. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Medal for solving c and e part. Ha haha..

  134. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :P .. i have to really give you , for spending so much time with me :)

  135. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you are a good human and a good teacher ;)

  136. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Really? Well, I am not..

  137. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what if i say you are one .. ?

  138. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Then I simply: \(\color{green}{\text{Refuse}}\)

  139. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and why ?

  140. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I said I am not that is why.

  141. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well then .. never mind , i'll have it that way :P

  142. waterineyes
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Never will I..

  143. ashna
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it is just because you are down to earth you are saying like that !

  144. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.