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 ?
1. 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
2. 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~
3. What is the 11 percent of 37?
Jawaban:
4.07
Penjelasan dengan langkah-langkah:
[tex]11\% \times 37 \\ \frac{11}{100} \times 37 \\ \frac{407}{100} = 4.07[/tex]
4. The price of parking for 2 hours or less at the airport is increasing from Rp15. 000, - t; Rp18.500, -. What is the percent that the price will increase?
Rp increase = 18500-15000= 3500
percentage increase
= 3500/15000 x 100%
= 23,33%________
the working and the answer are shown.
learning with brainly...
5. 25 is what percent of 20?
Jawaban:
125
Percentage Calculator: 25 is what percent of 20? = 125.
Penjelasan dengan langkah-langkah:
maaf kalau salah .
semoga membantu ya.
Jawab:
125 percentPenjelasan dengan langkah-langkah:
(x/100) · 20 = 25
x/100 = 25/20
x = (25·100)/20
x = 2500/20
x = 12525 is 125% of 20
______________
#Genius - kexcvi
6. 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
7. the correct equation of electrolyte ionization reaction in water is
the correct equation if electrolyte ionization reaction in water is H2 + O2 = H2O.
8. Thirty-five percent of 300 is what percent of 500?
Jawaban:
Tiga puluh lima persen atau 300 adalah berapa persen dari 500?
9. 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
10. 1.What does the text talk about? 2.What is the main function of the exclusive facial cotton? 3.How many percent of cotton are containts? 4.Why this product is suitable for baby's skin? 5."Ensures better abosorbency and comfort for ...." mention at least five synonyms of the word "comfort"!
where's the text? that's my question.
11. 4.25 is 23 percent of what number?
Jawaban:
25
maaf kalau salah. ok
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 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 ?
13. 1. What is the meaning of 100 percent love?2. Why could the girl sleep well?3. What is the moral of the story?
Jawaban:
1. to not suspect bad intentions from someone.
2. the girl could sleep well because she knows she gave the boy her full intention in the exchange. she does not suspect the boy to lie behind her back, thus she sleeps well knowing she has a full heart accepting the exchange.
3.When exchanging a deal, don't make a unknown decision behind one of the participants back. if so, one of the participants in the deal will get the short end, thus making them feel uneasy.
14. 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
15. 30% of 70 is what percent of 2000
Jawab:
Penjelasan dengan langkah-langkah:
You want to find a number such that −30%=2000 or equivalently
−30100=2000
which can be written as
100100−30100=2000
and
70100=2000
This gives
70100×10070=2000×10070
which gives
=200×100/7=285717
Jawab:
Bahasa Inggris
This might be something you're used to! You can kind of do this without using an explicit unknown, x, although after a while you may well prefer using x. O.K. Beginning with 100%, if you take away 30% you end up with 70% so that 2000 is equivalent to 70%.
Bahasa Indonesia
Ini mungkin sesuatu yang biasa Anda lakukan! Anda dapat melakukan ini tanpa menggunakan eksplisit yang tidak diketahui, x, meskipun setelah beberapa saat Anda mungkin lebih suka menggunakan x. BAIK. Dimulai dengan 100%, jika Anda mengambil 30% Anda berakhir dengan 70% sehingga 2000 setara dengan 70%
Penjelasan dengan langkah-langkah:
semoga bermanfaat
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 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
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. What is the price of a 15-year, zero coupon bond paying $1,000 at maturity if the YTM is.......percent.
Jawaban:
your son of a bitch
Penjelasan:
i love u more than u know
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. Consider the reaction for the commercial preparation of ammonia ; synthesis of ammonia (NH3) from the reaction between nitrogen and hydrogen. a) How many moles of hydrogen are needed to prepare 312 moles of ammonia? b) How many grams of hydrogen is this?
11010292928822
Penjelasan:
soriy ttayqyquq
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