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Alex
3 years ago
10

Which ion is a cation? A. Ca2+ B. Cl2 C. S2- D. Br-

Chemistry
1 answer:
wolverine [178]3 years ago
7 0

Answer:

Ca2+ is cation

Explanation:

Because cation contain positive charge.

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In what way did political policies act as a centrifugal force in the Soviet Union during the late 1980s
RUDIKE [14]

The government gave the people more freedom to criticize the government which led to nationalist movements

<h3>What way did political policies act as a centrifugal force in the Soviet Union during the late 1980s ?</h3>

In the late 1980s, the economic and social situation in the Soviet Union was tense. The socialist economy was on the verge of collapse, the war in Afghanistan was an assured defeat, and the quality of life for Soviet citizens was appalling.

  • Due to these situations, the Soviet leader Mikhail Gorbachev decided to carry out a series of economic and political reforms, known as Perestroika and Glasnost, aimed at liberalizing the economy from a pure socialist model to a mixed model, and granting greater rights and civil liberties to the citizens.
  • This led to numerous mobilizations and demonstrations, which further weakened the already weak Soviet political apparatus and made possible the emergence of regionalist nationalisms in the former Soviet nations, especially those subjugated to the power of Russia.

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6 0
2 years ago
What unit of measurement would be most useful to find the volume of a standard-sized stapler? A. mm B. mm2 C. mm3 D. cm3
pickupchik [31]
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3 0
3 years ago
A student decomposed 3.67g of copper (ii) hydroxide into copper (ii) oxide. how many ml of 3m h2so4 is need to react with all th
vredina [299]
In the presence of heat, copper (II) hydroxide decomposes in to copper (II) oxide. 
Cu(OH)₂ (s) ----> CuO (s) + H₂O (l)
upon decomposition, water is removed from Cu(OH)₂
the amount of Cu(OH)₂ decomposed - 3.67 g
number of moles of Cu(OH)₂  - 3.67 g / 97.5 g/mol = 0.038 mol
stoichiometry of Cu(OH)₂ to CuO is 1:1
therefore number of CuO moles formed are - 0.038 mol
CuO reacts with sulfuric acid to form CuSO₄ 
CuO + H₂SO₄ ---> CuSO₄ + H₂O
stoichiometry of CuO to H₂SO₄ is 1:1
therefore number of H₂SO₄ moles that should react is 0.038 mol
the molarity of H₂SO₄ is 3M
this means that in 1000 ml - 3 mol of H₂SO₄ present 
so if 3 mol are present in 1000 ml 
then volume for 0.038 mol = 1000/3 * 0.038 
                                           = 12.67 ml
6 0
4 years ago
How would I use the word evolution in a sentence?
LenaWriter [7]
Evolution is defined as change in gene frequency
6 0
3 years ago
How many moles of aluminum are needed to react completely with 4.8 mol of FeO?
Grace [21]

Answer:How many moles of aluminum are needed to react completely with 1.2 mol of FeO? 2Al(s) + 3FeO(s) = 3Fe(s) + Al2O3(s). 0.8 mols.

Explanation:

6 0
3 years ago
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