What is pH a measure of? A. Ion concentration B. Density C. Hydrogen-ion concentration D. Solute concentration Tolong kak secepatnya makasih :)
1. What is pH a measure of? A. Ion concentration B. Density C. Hydrogen-ion concentration D. Solute concentration Tolong kak secepatnya makasih :)
Jawaban:
c hidrogen-ion convention
2. pls help meEach unit of the pH scale represents a tenfold change in hydrogen ion concentration. What is the difference in hydrogen ion concentration between hydrochloric acid and a lemon? Thanks a lot
hydrogen ion concentration (H⁺) is greater in hydrochloric acid than a lemon with same concentration of both solutions
Weak acids (lemon has citric acid) partially ionize in water and give only a few hydrogen ions (H⁺), in the solution there molecules of acid and ions.
> HCL is more acidic than Lemon's concentration
"Sorry if i made a mistake, ask me if u dont understand"
3. the juice of the lime has a hydronium ion concentration which is about 100 100 times greater than that of pure water. what is the approximately pH of lime juice?
Acid, mean pH of lime juice is <7
4. What is the definit ion of analytical exposition text?
Jawaban:
An analytical exposition is a type of spoken or written text that is intended to persuade the listeners or readers that something is the case. To make the persuasion stronger, the speaker or writer gives some arguments as the fundamental reasons why something is the case. This type of text can be found in scientific books, journals, magazines, newspaper articles, academic speech or lectures, research report etc.
5. 1. what is the name of the medicine?2. what is the brand name of the medicine?3. what is the form of the medicine?4. what is the age-group the medicine for ?5. what is the flavor of the medicine?6. what is the concentration of the medicine?7. what is the amount of medicine?8. what is the purpose of the medicine?9. is there any warning for people talking the medicine?10. what are the directions for the medicine?TOLONG DIBANTU JAWAB YAA TERIMAKASIH UDAH YANG MENJAWAB :)
Jawaban:
1.calcium rich th antacid
2.mi-acid™
5.cool mint flavor
Penjelasan:
klo nggak kebalik jawaban ny itu maaf cuman segitu gambar ny kurang jelas maaf juga klo salah:)
Jawaban:
1)mi-acid™
2)major
3)tablets
4)calcium rich th antacid
5) adult
6)gastric pains
7) 70 chewable tablet
8)antacid
9)yes,it is
10) Chew 2 to 4 tablets
throughly as needed between meals and at bedtime or as directed by a doctor
sorry if something goes wrong
thanks you :)
6. 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]
7. 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.
8. 1.what is the name of the medicine2.what is the brand name of the medicine3.what is the from of the medicine4.what is the age-group the medicine for5.what is the flavor of the medicine6.what is the concentration of the medicine7.what is the amount of the medicine8.what is the purpose of the medicine9.is there any warning for the people taking the medicine10.what are the derections for the medicinekak tolong bantuannya... terimakasih
Jawaban:
1.diet milk
2.mi acid
3.from USA maaf cuma bisa jawab 3
9. 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
10. Help ya 1. A 250 cm3 of solution contains 132 mg of ammonium sulphate, (NH4) 2SO4 If dissociation constant of ammonia is 2.0 x 10¯5 what is the pH of the solution? The molecular mass of (NH4) 2SO4 id 132 /mol) 2 . one litre of sodium acetate solution has a pH of 9.0 Ka for CH3COOH is 10¯5 how many grams of sodium acetate present in solution? The molecular mass of CH3COONa is 82
1) mole of (NH4)2SO4 = 132/132 = 1 mmole
[(NH4)2SO4] = M = 1/250 = 4.10⁻³ M
[H+] = √(Kb. M. valency) = √(2.10⁻⁵×4.10⁻³×2) = 4.10⁻⁴ M
pH = - log 4.10⁻⁴ = 4 - log 4 = 4 - 2 log 2 = 3,4
2) pH=9 —> pOH=5 —> [OH-] = 10⁻⁵ M
[OH-] = √(Ka. M. valency)
10⁻⁵ = √(10⁻⁵×M×1)
10⁻¹⁰ = 10⁻⁵. M
M = 10⁻⁵ M
mole of CH3COONa = V. M = 1×10⁻⁵ mole
Mass of CH3COONa = 10⁻⁵ × 82 = 0,00082 grams
11. A solution is made by dissolving 25 g of glucose, C₆H₁₂O₆, to make 500 cm³ solution. What is the concentration of the solution in g/dm
Jawaban:
Calculating concentrations
The concentration of a solution can be shown in g/dm3 or mol/dm3. It is often more useful to know the concentration of a reactant in mol/dm3 so that the amount of reactant in a given volume can be calculated.
12. 1. what is the name of the medicine?2. what is the brand name of the medicine?3. what is the form of the medicine?4. what is the age-group the medicine for ?5. what is the flavor of the medicine?6. what is the concentration of the medicine?7. what is the amount of medicine?8. what is the purpose of the medicine?9. is there any warning for people talking the medicine?10. what are the directions for the medicine?TOLONG DIBANTU JAWAB YAA TERIMAKASIH UDAH YANG MENJAWAB :)
JAWABAN :1. MI-ACID ™2. MAJOR3. TABLETS4. CALCIUM RICH TH ANTACID 5. ADULT 6.GASTRITIS PAINS 7. 70 CHEWABLE TABLET8. ANTACID9. YES,IT IS10. CHEW 2 TO 4 TABLETS THROUGHLY AS NEEDED BETWEEN MEALS AND AT BEDTIME OR AS DIRECTED BY A DOCTOR
13. What is the function yg ion/use of auxilrary verbs?
for addition the verbs
Auxililiary verb adalah kata kerja bantu yang berfungsi sebagai penjelas dari kata kerja utama.
Contoh: Do you have free time now? (Apakah kau memiliki waktu luang sekarang?
Do seharusnya berarti "melakukan", tapi 'Do' di contoh di atas adalah auxiliary verb, jadi memiliki arti "apakah".
Best Regards, Hoping that wil be helpfull.
14. The hydrogen ion concentration [H+] ofhuman blood is approximately 3.98 x 10^-4Find the pH value of human blood tonearest tenth.tolong jawab ya pliss
Jawab:
pH = 3,4
Penjelasan dengan langkah-langkah:
pH is the negative base 10 logarithm ("log" on a calculator) of the hydrogen ion concentration of a solution. To calculate it, take the log of a given hydrogen ion concentration and reverse the sign.
pH = -(log 3.98 x 10^-4) = 3,4
15. 1.what is the name of medicine? 2.what is the brand name of the medicine? 3.what is the from of medicine? 4.what is the age-grup the medicine? 5.what is the flavor of the medicine? 6.what is the concentration of the medicine ? 7.what is the amount of the medicine? 8.what is the purpose of the medicine? 9.is there any warning for people talking the medicine? 10.what are the directions for the medicine? Mohon jawabannya
Jawaban:
1. Mi-acid
Maaf saya cuma bisa itu y
16. 1. what is the name of the medicine? 2. what is the brand name of the medicine? 3. what is the form of the medicine? 4. what is the age-group the medicine for? 5. what is the flavor of the medicine? 6. what is the concentration of the medicine? 7. what is the amount of medicine? 8. what is the purpose of the medicine? 9. is there any warning for people taking the medicine? 10. what are the directions for the medicine? plizzz kak bantu jawab
Jawaban:no picture ?
Penjelasan:GIMANA MAU JAWAB KAK MANA GAMBARNYA ?
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
Terjemahan :
Jumlah 1. air dalam larutan 2 A 70g kata yang menunjukkan 3 Massa solusi 4 Jumlah komponen ( zat terlarut ) hadir . 5 Jumlah solusi
18. 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.
◈ ◈ ◈
With the known datas, we work out the molar concentration in mol/L.
◈ ◈ ◈
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
◈ ◈ ◈
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]
◈ ◈ ◈
Therefore, the molar concentration of said acid solution is 6.075 mol/L.
◈ ◈ ◈
~I hope this helps you~
19. 1.what is the name of the medicine2.what is the brand name of the medicine3.what is the from of the medicine4.what is the age-group the medicine for5.what is the flavor of the medicine6.what is the concentration of the medicine7.what is the amount of the medicine8.what is the purpose of the medicine9.is there any warning for the people taking the medicine10.what are the derections for the medicinekak tolong bantuannya,,, terimakasih
1. What is the name of the medicine? Mi-Acid™️
2. What is the brand name of the medicine? MAJOR™️
3. What is the form of the medicine? Chewable tablet
4. What is the age-group the medicine for?
5. What is the flavor of the medicine? Cool mint
6. What is the concetration of the medicine?
7. What is the amount of the medicine? 50 of chewable tablets
8. What is the purpose of the medicine? Relieves, acid indigestion, heartburn, sour stomach.
9. Is there any warning for the people taking the medicine? Yes.
10. What are the directions for the medicine? Chew 2 to 4 tablets thoroughly as needed between meals and at bedtime or as directed by a doctor.
Maaf ya kak aku nomor 4 sama 6 kurang ngerti, soalnya juga soalnya gak jelas kak
20. 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
0 komentar:
Posting Komentar