Ujian Online Kimia

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| By Sentotpujianto
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| Attempts: 2,873 | Pertanyaan: 26
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1. Sikap belajar dibawah ini yang kurang tepat dilakukan siswa selama pembelajaran dikelas, kecuali....

Explanation

Using a mobile phone during class is a distraction and can hinder the learning process. It is important for students to pay attention and focus on the lesson being taught. Engaging in idle chatter or making jokes during the teacher's explanation can also disrupt the learning environment. Eating and drinking during class can be considered disrespectful and may distract both the student and others around them. However, paying attention to the lesson seriously is a positive behavior that helps in understanding and retaining information.

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2. Garam dapur, Air, dan asam cuka berturut-turut mempunyai rumus kimia....

Explanation

The given correct answer is NaCl, H2O, CH3COOH. This is because the question is asking for the correct chemical formulas of salt, water, and vinegar. NaCl represents salt (sodium chloride), H2O represents water, and CH3COOH represents vinegar (acetic acid).

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3. Senyawa Di fosfor Penta Klorida mempunyai rumus kimia.....

Explanation

The correct answer is P2O5 because the compound is stated to be phosphorus penta chloride, which means it contains 5 chlorine atoms. The prefix "penta" indicates 5, and since phosphorus has a valency of 5, it forms a compound with 5 chlorine atoms, resulting in the formula P2O5.

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4. Senyawa dengan rumus kimia NaBr mempunyai nama......

Explanation

The correct answer is Natrium Bromida. This is because the chemical formula NaBr indicates that the compound consists of one sodium (Na) atom and one bromine (Br) atom. Therefore, the correct name for this compound is Natrium Bromida.

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5. Ammonium Klorida, kalium hidroksida, dan natrium karbonat berturut-turut rumus kimianya adalah,....................

Explanation

The correct answer is NH4Cl, KOH, Na2CO3. This is because ammonium chloride (NH4Cl) is an ionic compound composed of ammonium ions (NH4+) and chloride ions (Cl-). Potassium hydroxide (KOH) is also an ionic compound composed of potassium ions (K+) and hydroxide ions (OH-). Sodium carbonate (Na2CO3) is a compound composed of sodium ions (Na+) and carbonate ions (CO3^2-). Therefore, the given compounds have the correct chemical formulas.

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6. Perhatikan persamaan reaksi berikut :H2  +   I2  -----> x HIsupaya setara nilai x adalah,,.....

Explanation

The equation represents the reaction between hydrogen gas (H2) and iodine gas (I2) to form hydrogen iodide (HI). In order for the reaction to be balanced, there needs to be an equal number of hydrogen and iodine atoms on both sides of the equation. Since there is only one iodine atom on the left side, the coefficient for I2 should be 1. Therefore, the correct answer is 2, indicating that there are two hydrogen molecules reacting with one iodine molecule to produce two molecules of hydrogen iodide.

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7. Senyawa dengan rumus MgSO4 mempunyai nama

Explanation

The compound with the formula MgSO4 is called Magnesium Sulfat.

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8. Senyawa dengan rumus CaCO3 mempunyai nama......

Explanation

The correct answer is "kalsium karbonat" because the compound with the formula CaCO3 is commonly known as calcium carbonate. "Kalium karbonat" is the incorrect answer as it refers to potassium carbonate. "Karbon karbonat" and "kalium karbon oksida" are also incorrect as they do not represent the correct formula or name for the compound. Therefore, the correct answer is "kalsium karbonat."

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9. Senyawa dengan rumus kimia NH4OH mempunyai nama....

Explanation

The correct answer is Ammonium Hidroksida. This is because the chemical formula NH4OH represents ammonium hydroxide, which is a compound made up of ammonium ions (NH4+) and hydroxide ions (OH-). Therefore, the correct name for this compound is Ammonium Hidroksida.

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10. Senyawa dengan rumus kimia MgF2 mempunyai nama......

Explanation

The correct answer is Magnesium Fluorida. This is because the compound with the chemical formula MgF2 is made up of one magnesium (Mg) atom and two fluoride (F) atoms. When naming ionic compounds, the name of the cation (in this case, magnesium) is written first, followed by the name of the anion (in this case, fluoride) with its ending changed to "-ide". Therefore, the correct name for MgF2 is Magnesium Fluorida.

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11. Persamaan berikut :aMg   +   bHCl  ------> cMgCl2   +   dH2Supaya persamaan reaksi diatas setara nilai a,b,c,d berturut-turut adalah.....

Explanation

The balanced equation for the reaction given is aMg + bHCl → cMgCl2 + dH2. To balance the equation, we need to ensure that the number of atoms of each element is equal on both sides of the equation. In this case, we have 1 atom of Mg on the left side and 1 atom of Mg on the right side, so a = 1. Similarly, we have 2 atoms of H on the left side and 2 atoms of H on the right side, so b = 2. For Cl, we have 1 atom on the left side and 2 atoms on the right side, so c = 1. Finally, we have 0 atoms of S on the left side and 1 atom of S on the right side, so d = 1. Therefore, the correct values for a, b, c, and d are 1, 2, 1, and 1 respectively.

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12. Senyawa barium nitrat mempunyai rumus kimia.....

Explanation

The correct answer is BaNO3 because barium nitrate is a compound that consists of one barium atom (Ba) and three nitrate ions (NO3). The formula BaNO3 represents this composition correctly. The other options, BNO3, BaNO2, and BNO2, do not accurately represent the correct composition of barium nitrate.

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13. Senyawa magnesium Oksida mempunyai rumus kimia.....

Explanation

The correct answer is MgO because magnesium oxide is a compound composed of one magnesium atom and one oxygen atom. The chemical formula for magnesium oxide is MgO, indicating that there is only one magnesium atom and one oxygen atom in the compound.

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14. Senyawa dengan rumus kimia N2O5 mempunyai nama......

Explanation

The correct answer is "Di nitrogen Penta Oksida". This is because the chemical formula N2O5 indicates that the compound consists of two nitrogen atoms (di nitrogen) and five oxygen atoms (penta oksida). Therefore, "Di nitrogen Penta Oksida" is the correct name for the compound with the chemical formula N2O5.

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15. Senyawa dengan rumus kimia CO mempunyai nama....

Explanation

The correct answer is "Karbon mono oksida". This is because the chemical formula CO indicates that the compound consists of one carbon atom (mono) and one oxygen atom (oksida). Therefore, the name "Karbon mono oksida" accurately describes the compound.

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16. Senyawa dengan rumus kimia CS2 mempunyai nama............

Explanation

The correct answer is "Karbon disulfida." This is because the compound with the chemical formula CS2 is known as carbon disulfide. Carbon disulfide is a colorless liquid with a strong odor, and it is commonly used in the production of rayon and cellophane.

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17. Senyawa MgBr2 mempunyai nama.........

Explanation

The correct answer is Magnesium Bromida because MgBr2 is the chemical formula for magnesium bromide. In chemical nomenclature, the name of an ionic compound is determined by the cation followed by the anion. In this case, magnesium is the cation and bromide is the anion, so the name of the compound is magnesium bromide.

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18. Which one do you like?

Explanation

not-available-via-ai

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19. Supaya persamaan reaksi :aAl  +  b H2SO4-------->c Al2(SO4)3   + d  H2Supaya persamaan reaksi diatas setara nilai a,b,c,d berturut turut harus.....

Explanation

To balance the given reaction equation, the coefficients of the reactants and products need to be adjusted. The coefficients represent the number of moles of each substance involved in the reaction. In this case, the balanced equation would be: 2Al + 3H2SO4 -> Al2(SO4)3 + 3H2. This means that 2 moles of Aluminum react with 3 moles of Sulfuric Acid to produce 1 mole of Aluminum Sulfate and 3 moles of Hydrogen gas. Therefore, the correct answer is 2,3,1,3.

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20. Senyawa Kalsium Sianida mempunyai rumus....

Explanation

The correct answer is Ca(CN)2. This is because the compound Calcium Cyanide is formed by the combination of one Calcium ion (Ca2+) and two Cyanide ions (CN-). Therefore, the formula for Calcium Cyanide is Ca(CN)2.

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21. senyawa KNO2 mempunyai nama.....

Explanation

The correct answer is "Kalium Nitrit" because KNO2 is the chemical formula for potassium nitrite. In chemical nomenclature, the name of a compound is derived from its constituent elements, and in this case, "kalium" refers to potassium and "nitrit" refers to nitrite. Therefore, "Kalium Nitrit" is the correct name for the compound KNO2.

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22. Senyawa dengan rumus kimia Li2O mempunyai nama......

Explanation

The correct answer is "Litium Oksida" because the compound with the chemical formula Li2O is formed by the combination of two lithium (Li) atoms and one oxygen (O) atom. Therefore, the name of this compound is "lithium oxide."

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23. senyawa NaClO mempunyai nama.....

Explanation

The correct answer is Natrium Hipoklorit. This is because NaClO refers to Sodium Hypochlorite, which is commonly known as Natrium Hipoklorit in Indonesian.

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24. Senyawa dengan rumus kimia HF mempunyai nama,,,,,

Explanation

None of the given options accurately represent the correct name for the compound with the chemical formula HF. The correct name for HF is hydrofluoric acid.

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25. Senyawa dengan rumus kimia CaS mempunyai nama.......

Explanation

The correct answer is Kalsium Sianida. The chemical formula CaS represents calcium sulfide, which is commonly known as calcium cyanide. Cyanide is a highly toxic compound, and it is used in various industrial processes, such as gold mining and electroplating. Therefore, CaS is named as calcium cyanide.

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26. Senyawa KCl mempunyai nama........
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Sikap belajar dibawah ini yang kurang tepat dilakukan siswa selama...
Garam dapur, Air, dan asam cuka berturut-turut mempunyai rumus...
Senyawa Di fosfor Penta Klorida mempunyai rumus kimia.....
Senyawa dengan rumus kimia NaBr mempunyai nama......
Ammonium Klorida, kalium hidroksida, dan natrium karbonat...
Perhatikan persamaan reaksi berikut :H2  +   I2 ...
Senyawa dengan rumus MgSO4 mempunyai nama
Senyawa dengan rumus CaCO3 mempunyai nama......
Senyawa dengan rumus kimia NH4OH mempunyai nama....
Senyawa dengan rumus kimia MgF2 mempunyai nama......
Persamaan berikut :aMg   +   bHCl  ------>...
Senyawa barium nitrat mempunyai rumus kimia.....
Senyawa magnesium Oksida mempunyai rumus kimia.....
Senyawa dengan rumus kimia N2O5 mempunyai nama......
Senyawa dengan rumus kimia CO mempunyai nama....
Senyawa dengan rumus kimia CS2 mempunyai nama............
Senyawa MgBr2 mempunyai nama.........
Which one do you like?
Supaya persamaan reaksi :aAl  +  b H2SO4-------->c...
Senyawa Kalsium Sianida mempunyai rumus....
Senyawa KNO2 mempunyai nama.....
Senyawa dengan rumus kimia Li2O mempunyai nama......
Senyawa NaClO mempunyai nama.....
Senyawa dengan rumus kimia HF mempunyai nama,,,,,
Senyawa dengan rumus kimia CaS mempunyai nama.......
Senyawa KCl mempunyai nama........
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