A solution of H2SO4 with a molal concentration of 8.010 m has adensity of 1.354g/mL. What is the molar concentration of thissolution?
1. A solution of H2SO4 with a molal concentration of 8.010 m has adensity of 1.354g/mL. What is the molar concentration of thissolution?
Answer with explanation:
You are given a solution of sulphuric acid with a molal concentration of 8.010 m and its density is 1.354 g/mL.
And we also know that the molar mass of sulphuric acid which is 98.079 g/mol.
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With the known datas, we work out the molar concentration in mol/L.
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The relation between molarity, molality and density is described within the following equation.
[tex]\frac{1}{m} = \frac{d}{M}-\frac{Mr}{1000}[/tex]
Where,
Density (d) = 1.354 g/mL
Molecular mass of solute (Mr) = 98.079 g/mol
Molality (m) = 8.010 m
Molarity (M) = ... mol/L
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So then,
[tex]\frac{1}{8.010\ m} = \frac{1.354\ g/mL}{M}-\frac{98.079\ g/mol}{1000}[/tex]
[tex]0.1248\ m = \frac{1.354\ g/mL}{M}-0.098079\ g/mol[/tex]
[tex]\frac{1.354\ g/mL}{M} = 0.098079\ g/mol+ 0.1248\ m[/tex]
[tex]\frac{1.354\ g/mL}{M} = 0.222879\ g/mmol[/tex]
[tex]M = \frac{1.354\ g/mL}{0.222879\ g/mmol}[/tex]
[tex]M = 6.075\ mol/L[/tex]
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Therefore, the molar concentration of said acid solution is 6.075 mol/L.
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~I hope this helps you~
2. how does the concentration of co2 affect photosynthesis
Increasing the speed of photosynthesis
3. Concentration of power and responsibility upon the president
Jawaban:
Pemerintahan negara dikuasai secara khusus oleh president
Penjelasan:
4. A 20 ml solution of 0,0512 M oxalic acid was used to standardise an unknown solution of potassium permanganate. An average of 21,24 ml of permanganate was required. Calculate the concentration of the potassium permanganate solution
Jawaban:
0.0964 M
Penjelasan:
H2C2O4 = KMnO4
V1 × N1 = V2 × N2
20 × 0.0512 × 2 = 21.24 × M × 1
[tex]M = \frac{20 × 0.0512 × 2 }{21.24} \\ M = 0.0964 [/tex]
5. The volume of box 0,6 m by 30 cm by 1,2 m is .........cm ( convert metres to centimetres before working out the volume 2 the volume of a cube whose edge is 5 cm ........... Cm
1.
0,6 m = 60cm
30cm=30cm
1,2 m = 120 cm
V= 60x30x120
V= 216000 cm³
2..
V= 15x15x15
V= 3375 cm³1. ....
0,6 m = 0,6 x 100 = 60 cm
1,2 m = 1,2 x 100 = 120 cm
V = 60 cm x 30 cm x 120 cm = 216.000 cm³
2. ....
V = 5 cm x 5 cm x 5 cm = 125 cm³
6. A bottle is labeled as 2.5 M Ca(OH)2. What is the concentration of Ca2+?
Ca(OH)2 » Ca²++2OH-
2,5M 2.5M 5M
So concetration of Ca2+ = 2.5M
7. 6. Convert the following:(a) 6.781= ml(c) 9630 cm =m
Yang a itu 6.781 Apa satuan nya ?
YG c 9630cm = 96.3 Meter
8. Concentration of power are responsibility upon the president artinya dalam menjalankan pemerintahan negara
Pemerintahan negara dikuasai secara khusus oleh preside
9. 300cm3 2.0 M NaOH is added to 1000cm3 of 0,5 M NaOH. The resulting concentration is... A.1.5 M B.1.0 M C.1.6 M D.0.75 M
Jawaban:
C.1.6 M
Penjelasan:
THANK YOU
10. 2. "Rising concentration of this gas can helpwarm the atmosphere, which is projectedto change the global climate during thiscentury."The underlined word refers to ....A. the atmosphereB. the COC. the rising concentrationD. the burning of the forestsE. the climate change
Jawaban:
c The Rising concentration
11. Which definition of concentration given below best describes the concept expressed in “in a solution of 10g of salt and 70ml of water, the concentration of the solution by percent mass is 12,5%2?”
jawabannya
1.The amount of water in the solution
2 A word denoting 70g
3 The mass of the solution
4 The amount of a component (solute) present.
5 The amount of solution
Terjemahan :
Jumlah 1. air dalam larutan 2 A 70g kata yang menunjukkan 3 Massa solusi 4 Jumlah komponen ( zat terlarut ) hadir . 5 Jumlah solusi
12. Concentration of 20 ml of H 2 SO4 is unknown, then titrated with NaOH 0.1 M solution using phenolphthalein indicator. When the NaOH volume is exactly 30.2 ml the color of the indicator starts to change. a. Determine the concentration of H 2 SO4. b. What do you think the pH of mixed solution when indicator starts to change?
Jawaban:
Data given :
Volume H₂SO₄ = 20 mL
Concentration of NaOH = 0,1 M
Final Volume of NaOH during titration = 30,2 mL
Question and answer :
1 Concentration of H₂SO₄
M₁V₁n₁ = M₂V₂n₂
M₁.20.2 = 0,1. 30,2. 1
M₁ = 0,0755 M
2. What do you think the pH of mixed solution when indicator starts to change?
pH when the mixed indicator starts to change is 7. Because the indicators mixed are strong acid and strong base. Based on the theory of hydrolysis, when we mix strong acid and strong base, their ions are not gonna be raveled in the water, so pH stand still at 7 ( neutral )
CMIIW.
13. a 25 ml solution of 0.5 M NaOH is titrated until neutralized into a 50 ml sample of HCI.what was the concentration of the HCI
the concentration of HCl is 0,25 M
Discussion SectionTitration is a procedure for determining the concentration of a solution by reacting with another solution which is already have known concentration (usually a standard solution). Determination of the endpoint / equivalence point of the reaction can use indicators according to the appropriate pH range
Titrations can be distinguished including acid-base titration, depositional titration, and redox titration. At acid base titration the principle of neutralization of acids and bases is used.
At acid base titration there will be a change in the pH of the solution. When the alkaline is titrated by acid the pH will drops, and vice versa if the acid is titrated by alkaline then the pH will rise.
From this pH change a Titration Curve can be made which is a function of acid / base volume and pH of the solution
On titration of strong acids with strong bases, the point is equivalent at pH = 7
At titration of weak acids with strong bases, the point is equivalent to a pH between 8-9
At weak base titration with strong acid, the point is equivalent to a pH between 5-6
Acid-base titration formula
Ma. Va. na = Mb. Vb. nb
Ma, Mb = acid base concentration
Va, Vb = acid base volume
na, nb = acid base valence
Known Variable25 ml solution of 0.5 M NaOH
50 ml sample of HCI.
Asked Variablethe concentration of the HCI
Solution/AnsweredFirst ,Input the number already known in the Acid-base titration formula
Ma. Va. na = Mb. Vb. nb
a = NaOH, b = HCl
0,5 . 25 . 1 = Mb . 50 . 1 (acid and base valence of NaOH and HCl = 1)
Mb = 0,25 M
So the concentration of HCl is 0,25 M
Learn more at following internal linktitration error https://brainly.co.id/tugas/851621determine the number of water molecules by titration https://brainly.co.id/tugas/15102123--------------------------Detailed answerGrade : 11 Subject : Chemistry Chapter : acid base titration Code : 11.7.9 Keywords :Titration, acid and base, HCI, NaOH[tex]\large{\boxed{\bigstar}\boxed{\bold{indrawboy}}\boxed{\bigstar}}[/tex]14. Convert the following sentences into passive! Millions of tourists visit Bali every year.
ྀ༘ Present Tense┃Passive Voice ྀ༘
━━━━━━━━━━━━━━━━━━━━━━━━
Jawaban: Bali is visited by millions of tourists every year
━━━━━━━━━━━━━━━━━━━━━━━━
PEMBAHASAN▓ Definisi ▓
Simple Present Tense adalah bentuk waktu yang digunakan untuk mengungkapkan suatu aktifitas/peristiwa yang dilakukan secara berulang-ulang, kegaitan yang sudah menjadi suatu kebiasaan, atau menyatakan suatu fakta. Contoh:
Aku belajar setiap malamMatahari terbit di sebelah Timur▓ Pattern ▓
ã…¤•‘°Active Voice
(+) S + V1 (s/es) + O/C(–) S + do/does + not + V-1 + O/C(?) Do/Does + S + V-1 + O/C + ?ã…¤•‘°Passive Voice
(+) S + to be present + V3 + by + agent(–) S + to be present + not + V3 + by + agent(?) To be present + S + V3 + by + agent + ?▓ Keterangan ▓
❶ Pada Active Voice, untuk kalimat positif
Pada kalimat positif, jika subjeknya ┃He, She, It, dan Nama orang tunggal (kecuali subjek ‘saya (I)’)┃ maka, kata kerja harus ditambah ‘s/es’❷ Pada Active Voice, untuk kalimat negatif dan introgatif
Does digunakan untuk subject ➻ He, She, It, dan Nama orang tunggal (kecuali subjek ‘saya (I)’)Do digunakan untuk subject ➻ I, You, We, They, dan Nama orang/benda banyak (Gracia and Leowvis are.... ┃atau┃ The tables are....)❸ To be present terbagi menjadi tiga, yaitu:
Am digunakan untuk ➻ IIs digunakan untuk ➻ He, She, It, dan Nama orang/benda tunggal (kecuali subjek ‘saya (I)’)Are digunakan untuk ➻ You, We, They, dan Nama orang/benda banyak (Gracia and Leowvis are.... ┃atau┃ The tables are....)15. _________claims the highest concentration of geysers of any place on Earth
yellow stone national park
16. Water is added to 25.0 ml of a 0.866 m kno3 solution until the volume of the solution is exactly 500 ml. what is the concentration of the fi nal solution?
Jawaban:
Penjelasan:
[tex]M_{KNO_{3}}= 0,866 \ M = \frac{n}{V_{i}} \\\\V_{f}= 500 \ mL\\\\\delta V=25 \ mL\\\\V_{i}=V_{f}-\delta V\\\\V_{i}=500 \ mL-25 \ mL = 475 \ mL\\\\M_{f \ KNO_{3}}=M_{KNO_{3}}\times \frac{V_{i}}{V_{f}} =\\\\M_{f \ KNO_{3}}=0,866 \ M \times \frac{475 \ mL}{500 \ mL} =\\\\M_{f \ KNO_{3}}=0,866 \ M \times \frac{475 \ mL}{500 \ mL} = 0,8227 \ M[/tex]
17. Which definition of concentration given below best describes the concept expressed in “in a solution of 10g of salt and 70ml of water, the concentration of the solution by percent mass is 12,5%2?” jawabannya 1.The amount of water in the solution 2 A word denoting 70g 3 The mass of the solution 4 The amount of a component (solute) present. 5 The amount of solution
Jumlah 1. air dalam larutan 2 A 70g kata yang menunjukkan 3 Massa solusi 4 Jumlah komponen ( zat terlarut ) hadir . 5 Jumlah solusi
18. off all the saturated vegetable oils,coconut oil,...,has the greatest concentration of polysaturated oils
yes,,because all of very god for healty
19. What is the pH of a 3 x 10-7 M solution of HCl ? What concentration of Hydrogen ions is provided by the ionization of water ?
maaf saya tidak mengerti
20. plant chloroplasts convert the energy of sunlight into?
digunakan untuk proses fotosintesis
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