several atoms will join together to make
1. several atoms will join together to make
beberapa atom akan bergabung bersama sama untuk membuatSeveral atoms will join together to make molecules.
2. 6. How many moles of nitrogen atoms of combined with 8.60 mol of oxygen atoms in dinitrogen pentoxide, N205?
Jawaban:
Here you go, I hope it'll help ya
3. Choose the A. CFC contains 3 elements and 4 atomsB. CFC contains total 6 atomsC. CFC contains 5 elements and 3 atomsD. CFC contains 3 elements and 5 atoms
Pertanyaan?
Choose the ?
Jawaban:CFC merupakan singkatan dari CLORO FLUORO CARBON . CFC berbentuk gas dan mempunyai sifat sebagai berikut yaitu : Tidak berbau, tidak berasa, dan tidak mudah bereaksi. CFC dimanfaatkan manusia untuk keperluan sehari-hari seperti hair spray, parfum semprot, lemari es dan AC.
Walaupun tidak berbahaya secara langsung, CFC memberikan dampak yang sangat besar sekali. CFC yang dikeluarkan akan langsung terbang ke lapisan stratosfer dan kemudian akan langsung bereaksi dengan Ozon (O3). Dengan demikian sedikit demi sedikit, lapisan ozon akan berlubang. Kita tahu bahwa lapisan ozon merupakan pelindung bumi yang mencegah masuknya sinar ultraviolet matahari.
Kalau lapisan ozon berlubang apa yang terjadi.. Ya, Sinar ultraviolet akan masuk ke bumi dan bisa dibayangkan seperti apa akibatnya.
Pembahasan!!!~◇ciri-ciricfc◇~CFC (Freon) terdiri dari klor (Cl), fluor (F), dan karbon (C).Sifat tidak beracun, tidak dapat dibakar dan sangat stabil (tidak mudah bereaksi).CFC digunakan sebagai bahan pendingin kulkas dan AC (air conditioner) baik di rumah maupun pada kendaraan.5 contoh benda yang mengandung gas CFC (Chloro flouro carbon)Kulkas.Air Conditioner.Parfum.Benda elektronik.Pembersih (Pledge)SEMOGATERBANTUATASJAWABANSAYA4. . Calculate the mass of 500. atoms of iron (Fe). 1
Soal : Hitunglah massa 500 atom Fe (Besi)
jawab:
Ar Besi (Fe) = 56
massa 1 atom C-12 = 2 x 10⁻²³ gram
Massa rata-rata 1 atom Besi (Fe) = 56 x [tex]\frac{1}{12}[/tex] x 2 x 10⁻²³ = 9,3 x 10⁻²³ gram
Massa 500 atom Besi (Fe) = 500 x 9,3 x 10⁻²³ = 4,65 x 10⁻²⁰ gram
Jadi, massa 500 atom Fe (Besi) adalah 4,65 x 10⁻²⁰ gram
5. Tentukan biloks atoms pada ion so4 dua mines
Redoks & Biloks
Kimia XI
Jumlah bilangan oksidasi pada senyawa ion sesuai dengan muatannya.
Perhatikan senyawa ion SO₄²⁻
Telah diketahui bahwa biloks O = - 2
Sekarang kita cari biloks S
[Biloks S] + 4[Biloks O] = - 2
[Biloks S] + 4[- 2] = - 2
[Biloks S] - 8 = - 2
Jadi biloks S pada senyawa ion SO₄²⁻ adalah +6
6. Choose the below! A. CFC contains 3 elements and 4 atoms B. CFC contains total 6 atoms C. CFC contains 5 elements and 3 atoms D. CFC contains 3 elements and 5 atom
Jawaban:
Jawabannya adalah A.
Penjelasan:
Klorofluorokarbon (CFC) adalah suatu senyawa organik yang hanya mengandung karbon, klorin, dan fluorin, yang diproduksi sebagai derivat volatil dari metana, etana, dan propana.
7. A compound contains one atom of calcium, two atoms of hydrogen and two atoms of oxygen. What is the correct chemical formula of the compound?
Jawaban:
Ca(OH)2
maaf kalau salah
8. neutron yg terdapat di dalam inti atoms dikemukakan oleh
Neutron di temukan oleh James Chadwick
neutron ditemukan james chadwick9. bromine has 2 types of atoms: 79/35 Br and 81/35 Br. What is the difference between the 2 atoms?
Jawaban:
There are isotopes
Penjelasan:
isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons anda the are have different physical properties
79/35 Br = number of e- 35 , protons 35 , and neutron 44
81/35 Br = number of e- 35 , protons 35 , and neutron 46
Regards
IG @instakimiaSMA
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. sebutkan ciri ciri tangga nada diatoms mayor!
Jawaban:
Ciri-cirinya adalah :
1. Bersifat riang gembira.
2. Bersemangat.
3. Biasanya diawali dan diakhiri dengan nada Do.
4. Mempunyai pola interval: 1, 1, ½, 1, 1, 1, ½.
Penjelasan:
Tangga nada mayor adalah salah satu Tangga nada diatonik.
[tex]semoga \: membantu[/tex]
Jawaban:
Ciri-ciri tangga nada diatonis mayor :
- Bersifat riang gembira
- Bersemangat
- Biasanya diawali dan diakhiri dengan nada Do
- Mempunyai pola interval: 1, 1, ½, 1, 1, 1, ½
Penjelasan:
Dalam teori musik, skala mayor atau tangga nada mayor adalah salah satu Tangga nada diatonik. Skala ini tersusun oleh delapan not. Interval antara not yang berurutan dalam skala mayor adalah: 1, 1, 1/2, 1, 1, 1, 1/2.
Sebagai contoh, tangga nada C mayor adalah C, D, E, F, G, A, B, C'
Ciri-ciri tangga nada mayor :
- Bersifat riang gembira
- Bersemangat
- Biasanya diawali dan diakhiri dengan nada Do
- Mempunyai pola interval: 1, 1, ½, 1, 1, 1, ½
Semoga membantu:)
12. Write the Lewis dot symbol for magnesium and chlorine atoms.
Jawaban:
mg forms ionic bond to Cl by donating its valence electrons to two Cl atoms . The electron configuration of Mg is [Ne]3s². It can achieve a complete octet by losing its components
13. Calculate the number of carbon atoms present in 120g of ethanol, C2H5OH ? (relative atomic mass C= 12; H=1; O=16, Avogadro constant = 6.02x10^23) a. 4.88 x 6.02 x 10^23 atoms b. 5.22 x 6.02 x 10^23 atoms c. 3.61 x 6.02 x 10^23 atoms d. 2.61 x 6.02 x 10^23 atoms Mohon bantu dengan caranya ;)
%C dalam C2H5OH =
(2x12) : (46) x 100%= 52%
massa C = 52,174% x 120 gram =62,6088 gram
mol C= 62,6088:24= 2,6087 mol
jumlah atom = mol x avogadro
14. what can be said about all the atoms in an elements
I can said
Atoms are a basic unit of matter, composed of atomic nuclei and the negatively charged cloud of electrons that surround it. The atomic nucleus consists of a positively charged proton, and neutrons are neutrally charged (except in the nucleus of Hydrogen-1 atom, which has no neutrons). The electrons in an atom are bound to the nucleus of an atom by an electromagnetic force. Such a set of atoms can bind to each other, and form a molecule. Atoms containing the same number of protons and electrons are neutral, while those containing different numbers of protons and electrons are positive or negative and are called ions. Atoms are grouped according to the number of protons and neutrons found in the nucleus of the atom. The number of protons on the atom determines the chemical element of the atom, and the number of neutrons determines the isotope of the element.
I apologize if i wrong.
15. Calculate the mass in grams: 0.5 mol of oxygen atoms
mass (g) = mol x Ar Oxygen= 0.5 x 16 = 8 gram
16. if there 60 molecules of oxygen and 124 atoms of hydrogen the amount of water molecules can be formed and the remaining atoms left from the reaction of Those atoms are
yesterday and tomorrow
17. what number of Fe atoms and what amount (moles) of Fe atoms are in 500.0 g of iron
STOICHIOMETRY :
It is known that the mass of Fe (Iron) we have is 500.0g and if we open the periodic table, it is also told that the relative atomic mass (Ar) is equal to approximately 56. So in this case we can find the mole of the iron with :
[tex]n = \frac{m}{Ar/Mr}[/tex]
Where :
n = mole
Ar/Mr = Relative Atomic Mass / Relative Molecular Mass
m = mass
So..
[tex]n = \frac{500}{56} = 8.92 ≈ 9 moles[/tex]
So the answer is 8,92 moles of Fe or approximately 9 moles of Fe
Hope it helps, Shalom!
18. how many atoms in HOBr, PBr5, BF3, C2H6, S8?
KIMIA
Atom
• HOBr = 3 atom
• PBr5 = 6 atom
• BF3 = 4 atom
• C2H6 = 8 atom
• S8 = 8 atom
THANK YOU@ardilutfijulianto
19. How many calcium atoms are in 16,2 of calcium
We're asked to calculate the number of atoms of Ca in 16,2 g Ca.
What we must first do is convert the given mass of calcium to moles of calcium, using its molar mass (referring to a periodic table, this is 40.08 [tex]\frac{g}{mol}[/tex] )
= 16,2 g Ca [tex](\frac{1 mol Ca}{40,08 g Ca} )[/tex]
= 0,404 mol Ca
Using Avogadro's number, 6,022 × 10²³ [tex]\frac{particles}{mol}[/tex] we can calculate the number of atoms present :
= 0,404 [tex](\frac{6,022 x 10^2^3atoms Ca}{1 mol Ca} )[/tex]
= 2,43 × 10²³ atom Ca
Thanks
sorry if there is a mistake
20. The strong bonds between the atoms are...... bonds
the strong bonds between the atoms are Ionic bonds
0 komentar:
Posting Komentar