3 years ago

Of the well-characterized elements of group 7A, which would exhibit the following properties?

1 answer:

4 0

Answer: it reacts with the alkali metals (M) to form a salt MX, where X is the halogen.

Explanation: Group 7A elements are halogen and they react with alkali metals like Sodium or potassium to form a salt like NaCl

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krok68 [10]

Answer:

$\large\boxed{\large\boxed{0.64M}}$

Explanation:

When you form a diluted solution from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

$Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}$

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

$\text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}$

Substitute and solve for the molarity of the diluted solution:

$250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M$

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3 years ago

IceJOKER [234]

Answer: C

Explanation:

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Sophie [7]

Answer:

¨molecular compounds are formed by the sharing of electrons, and ionic compounds are formed by the transfer of electrons¨

Explanation:

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Mrrafil [7]

Answer: True

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2 years ago

Mashcka [7]

the answer is 0.2 ATM

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3 years ago