What is the molarity of a solution containing 4 moles of KCl in 2.5 L of solution?
1. What is the molarity of a solution containing 4 moles of KCl in 2.5 L of solution?
Penjelasan:
dik : n KCl = 4 mol
v = 2,5 L
dit : M = ?
jb :
M = n / v
= 4 mol / 2,5 L
= 1,6 mol/L
semoga membantu :)
2. 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
3. 1. A mixture containing an insoluble solute
Jawaban:
A mixture in which a substance does not dissolve in water is called a suspension and the substance is said to be insoluble. An example of this type of mixture is chalk in water. Chalk is insoluble - it does not dissolve in water.
N. sorry kl salah
4. a mixture of gases is analyzed and found to have the following composition:CO2 = 12.0%CH4 = 27.3%H2 = 9.9%N2 = 44.8%CO = 6.0%How much will the weight of 3lb moles of this gas mixture?
Jawaban:
ambil point aja kak
5. How many moles of sodium bromide can be formed from 1.55 moles of aluminum bromide?
Jawaban:
12020729629101
Penjelasan:
kalo salah maap
6. Find the number of moles of the indicated species: a) 333 mg of Na2B4O7.10H20
Jawaban:
Penjelasan:
[tex]\text{Na}_2\text{B}_4\text{O}_7.10\text{H}_2\text{O}[/tex]
Mr = 2Na + 4B + 8O + 20H
Mr = 2(23) + 4(11) + 17(16) + 20(1)
Mr = 46 + 44 + 272+ 20
Mr = 382
[tex]n = \frac{m}{Mm}\\n = \frac{333}{382}\\n = 0,87 \times 10^-3 \ \text{mol}[/tex]
7. comose a dialogue containing an expression of admiration
artinya Buat sebuah dialog yang berisi ekspresi kekagumanBuat sebuah dialog yang berisi ekspresi kekaguman
8. For the given reaction C5H12 + 8 O2 → 5 CO2 + 6 H2O, If the reactants C5H12 & O2 are having 2 moles an 8 moles of initial feed respectively. How many moles of C5H12 are there when the reaction completes?
Jawaban:
1 mol C5H12
Penjelasan:
pakai cara yang di gambar ya
semoga bermanfaat
9. terjemahan dari mixture,piece,loudly,clearly,correctly,use(s),directed,present,containing,prompthy.
campuran,bagian,keras sekali,jelas,benar,menggunakan,diarahkan,mempersembahkan/menyajikan,mengandung,tepatcampuran, potongan, keras, jelas, benar, gunakan (s), diarahkan, sekarang, mengandung, segera
10. a).molecule containing two different types of atoms:____ b). a molecule containing only three atoms:____
a. positive atom and negative atom
b. proton, neutron, and electron
i'm sorry if the answers are wrong
11. A mixture containing 35% SiO2 and 0.55 g NaCl and an unknown amount at NH4CL, when the mixture is heated it mass was decreased to 1.75 g the mass at NH4CL in the mixture?
Suatu campuran yang mengandung 35% SiO₂ dan 0.55 g NaCl dan sejumlah yang tidak diketahui pada NH4CL. Ketika campuran dipanaskan massanya berkurang menjadi 1,75 g. Massa NH4CL dalam campuran adalah 0.85 gram.
PembahasanSilikon oksida, natrium klorida dan ammonium klorida merupakan senyawa yang terlarut dalam air. Kelarutan masing-masing senyawa tersebut berbeda-beda dalam air. Ketika berupa campuran diasumsikan merupakan campuran larutan dalam air. Adapun proses pemanasan dimaksudkan untuk menguapkan air saja, mengingat silikon oksida, garam NaCl, dan ammonium klorida memiliki titik didih yang sangat tinggi.
Diketahui :
Massa setelah pemanasan:m SiO₂ = 0.35% massa total
m NaCl = 0.55 gram
m total = 1.75 gram
Ditanyakan :
m NH₄Cl = ?
Penyelesaian :
massa total = m NH₄Cl + m SiO₂ + m NaCl
1.75 gram = m NH₄Cl + 0.35 (1.75) + 0.55
m NH₄Cl = 1.75 gram - 0.35 gram - 0.55 gram
m NH₄Cl = 0.85 gram.
Kesimpulan
Massa NH₄Cl dalam campuran adalah 0.85 gram.
brainly.co.id/tugas/2348652Materi tentang sifat kimia SiO₂:
brainly.co.id/tugas/25132386Materi tentang titik didih senyawa ionik:
brainly.co.id/tugas/21841587
______________
Detail jawabanMapel : Kimia
Kelas : X
Bab : Hukum dasar kimia
Kode : 10.7.6
#SolusiBrainlyCommunity
12. Write a dialogue containing expressions of apologizing!
Jawaban:
Sara :"hey!!, it is my new dress"
Emly :"im sorry, sara.. I accidentally spilled the coffee
Sara :" i forgot it, but dont do it again"
Emly :"thanks sara"
#Semogamembantu
JADIKANJAWABANTERBAIIK~`
ARIGATOUTHANKYOU
13. what is mixture and types of mixture?
Jawaban:
A mixture is composed of one or more pure substances in varying composition. There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout.
14. 0.08 moles of sulfuric acid in 2 litres of solution has a Ph?
n (moles) = M / V
M (concentracion) = n x V = 0,08 moles x 2 Litres = 0,16 M
Since H₂SO₄ is strong acid, we must use this formula:
[H⁺] = acid valence x Concentration
[H⁺] = 2 x 0,16 M
[H⁺]= 0,32 M = 32 x 10⁻² M
pH = - log [H⁺]
pH = - log (32 x 10⁻² M)
pH = 2 - log 32
~apply some logarithm properties~
pH = 2 - 5 log 2
pH = 0,5
That gives us pH of said acid is 2-5log2.
I hope this helps~
15. Andy and Budi have bucket containing a mixture of salt and sand. How can Andy and Budi separate the salt and sand particles in the mixture? Explain the steps to be taken clearly.
Jawaban:
The way to separate the sand mixed with salt is by filtering or filtration.
The large size of the sand particles makes it stuck and unable to penetrate the filter hole, and will separate
Semoga membantu :)
16. A mixture containing two anions was tested and the results are shown below.
Jawaban:
a. carbonate and chloride.
Penjelasan:
semoga sukses
maaf kalau salah banget maaf ya karena aku manusia biasa....
cwimi ≥3≤ฅ'ω'ฅ(⌒o⌒)
17. Write a dialogues containing pression of capability
dialogues containing pression of capability, pression??
18. A 250 cm^3 of gaseous mixture of ethane and ethene was reacted with bromine at S.T.P . If 1.34g of bromine was used , determine the percentage of ethene in the mixture .
Penjelasan:
abbbbababababababbaabababababababab
19. Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen produced 2.086 g of CO2 and 1.134 g of H2O. What is the empirical formula of the compound?
Rumus Empirisnya adalah CH2O.
20. what is the minimum number of hydrogen bonds in a length of dna containing 900 base pairs?
Minimum number of hydrogen bonds in a length of DNA containing 900 base pairs is 1800 hydrogen bonds. Assuming one pair of bases could contain minimum of 2 hydrogen bonds (from A-T pair).
Penjelasan dengan langkah-langkahDiketahui:Sebuah panjang DNA yang mengandung 900 pasangan basa
Ditanyakan:Jumlah minimum ikatan hidrogen dalam panjang DNA tersebut
Dijawab:Dengan asumsi satu pasangan basa dapat mengandung minimal 2 ikatan hidrogen (dari pasangan A-T). Maka diperoleh:
900 x 2 = 1800
Sehingga jumlah minimum ikatan hidrogen dalam Sebuah panjang DNA yang mengandung 900 pasangan basa ialah 1800 ikatan hidrogen.
Deoxyribonucleic acid (DNA) merupakan makromolekul berupa benang sangat panjang yang terbentuk dari sejumlah besar deoksiribonukleotida, yang masing-masing tersusun dari satu basa, satu gula dan satu gugus fosfat. Apabila kita ibaratkan suatu tubuh, maka DNA diibaratkan sebagai otak yang dapat mengatur segala proses di dalam tubuh.
Pelajari Lebih LanjutPelajari lebih lanjut materi tentang DNA: https://brainly.co.id/tugas/826555
#BelajarBersamaBrainly #SPJ4
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