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lara [203]
3 years ago
5

6. Which group of compounds is described as insoluble?

Chemistry
1 answer:
Sedaia [141]3 years ago
3 0

Answer:phosphates are insoluble in water

Explanation:

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they showed mandeleeves predictions were correct

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Decide which element probably forms a compound with chlorine that has a chemical formula most and least similar to the chemical
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phosphorus - least similar to barium

beryllium - most similar to barium

Explanation:

The formula of the chloride formed between barium and chlorine is BaCl2.

Barium is a metallic element and has the valency of +2. Beryllium is also a group two metal with a valency of +2. Hence the compound formed between beryllium and chlorine is BeCl2

Phosphorus is a nonmetal and forms a completely different chloride from BaCl2. The chloride of phosphorus is PCl5 and PCl3. These are least similar to BaCl2

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3 years ago
HELPP!<br> how many grams are in 1.50 x 10(24) atoms of copper?
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Answer:

2266g

Explanation:

mass = no.of molecules /6.o23*1o(23) * molar mass

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51.5 .44g/mol =2266 g

4 0
3 years ago
When a kettle is placed on the stove and water begins to boil, the hotter water at the bottom begins to rise and the
My name is Ann [436]

Answer:

The cooler water is denser

Explanation:

Convection drives the boiling of water placed on a stove in a kettle.

During convection, heat is circulated by density differences in portions of a fluid.

Convection is a form of heat transfer in fluids especially gas and liquid.

  • In boiling water, the heat is supplied to the base of the stove.
  • The water at the bottom on heat becomes lighter as the molecules gain more kinetic energy.
  • The colder part of the water on top sinks to replace the less dense on below.
  • This exchange sets up convection cells in the kettle.
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Which observation does not indicate that a chemical reaction has occurred?
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change in the total mass of substances

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