To make a 2.0-mole solution, how many moles of solute must be dissolved in 0.50 liters of solution?0.25 moles solute

0.50 moles solute

1.0 mole solute

2.0 moles solute

Answers

Answer 1

Answer: To make a 2.0-molarity solution in 0.50 liters of solution
M = moles of solute / liter solution
2 molarity = moles of solute / 0.5 liters of solution
moles of solute = 1 moles of solute

Answer 2

Answer:

Answer : The correct option is, 1.0 mole

Explanation : Given,

Molarity of solution = 2.0 mole/L

Volume of solution = 0.50 L

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

$Molarity=\frac{\text{Moles of solute}}{\text{Volume of solution}}$

Now put all the given values in the above formula, we get the moles of the solute.

$2.0mole/L=\frac{\text{Moles of solute}}{0.50L}$

$\text{Moles of solute}=1.0mole$

Therefore, the number of moles of solute dissolved in the solution will be, 1.0 mole

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Answers

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Which list of elements is arranged in order of increasing atomic radii?(1) Li, Be, B, C (3) Sc, Ti, V, Cr(2) Sr, Ca, Mg, Be (4) F, Cl, Br, I

Answers

Elements which are arranged in increasing order of atomic radii are F,Cl,Br, I.

What is atomic radius ?

Atomic radius is defined as the distance between nucleus of an atom and the valence electrons.In a group, atomic radii increases up to down as electrons are added in the next successive shell which increases the size of atom.

In a period, as electrons are added to the same shell the force of attraction between nucleus and valence electrons increases as a result of which atom tend to shrink resulting in decrease in atomic size.

As fluorine, chlorine, bromine and iodine are present in the same group their atomic size increases as new shells are added from top to bottom of periodic table., while for the elements given in other options they are present in same period or in different group and hence do not show an gradual increase in atomic radii.

Learn more about atomic radius,here:

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Answer: F,Cl,Br,l

Explanation:these elements are all part of group 17

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Answers

Answer:

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As a comet approaches the Sun, it starts to heat up. The ice transforms directly from a solid to a vapor, releasing the dust particles embedded inside. Sunlight and the stream of charged particles flowing from the Sun – the solar wind – sweeps the evaporated material and dust back in a long tail.

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Answers

Answer:

Explanation:

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When gaining that 1 electron, group 17 elements become negative ion or anions

-For metal groups such as group 1, they need to lose that 1 electron to become stable. When they lose that 1 electron, they become positive ion which is cation.

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Answers

Each principal energy level above the first contains one s orbital and three p orbitals. A set of three p orbitals, called the p sub level, can hold a maximum of six electrons. Therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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