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anyanavicka [17]
3 years ago
11

In order to make a solution more concentrated, on should (pick as many as apply)

Chemistry
1 answer:
kupik [55]3 years ago
3 0

Answer:

B, C, E  

Explanation:

What you are trying to do is increase the solute/solvent ratio.

B. Adding more solute increases the value of the numerator, so it increases the ratio.

C. Boiling away some solvent decreases the value of the denominator, so it increases the ratio.

E. Heating the solution so more solute dissolves increases the value of the numerator, so it increases the ratio.

A is wrong. Adding more solvent makes a more dilute solution.

D is wrong. The solvent dissolves the solute.

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In an experiment, potassium chlorate decomposed according to the following chemical equation.
Arada [10]

Answer:  

(240 × 3 × 31.998)/(122.5 × 2)   g

Step-by-step explanation:

We know we will need a balanced equation with masses and molar masses, so let’s gather all the information in one place.  

M_r:          122.5                31.998

               2KClO₃ ⟶ 2KCl + 3O₂

Mass/g:     240  

Mass of O₂ = 240 g KClO₃ × (1 mol KClO₃/122.5 g KClO₃) × (3 mol O₂/2 mol KClO₃)  × (31.998 g O₂/1 mol O₂) = 94.0 g O₂

Mass of O₂= (240 × 3 × 31.998)/(2 × 122.5) = 94.0 g O₂


7 0
3 years ago
Which of the following is not a property of a covalent bond?
nexus9112 [7]

Answer:

Have high melting points and high boiling points.

Explanation:

  • Covalent bonds are types of chemical bonds that result from the sharing of electrons between non-metal atoms.
  • Covalent bonds result in the formation of covalent compounds.
  • Covalent compounds are characterized by low melting and boiling points.
  • Therefore, it won't be true to say they have high melting and boiling points.
  • Other properties of covalent bonds include poor conductors of electricity and heat, gases or liquids at room temperature, and are non-polar compounds among others.
5 0
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An ice cube melts to become water in a cup. how will the ice cube and the water be the same?
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They will stay the same through the laws of conservation of mass even when they have changed state so they will have the reactant of Ice will be the same amount as the product of water   
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Answer:

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Explanation:

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