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lozanna [386]
4 years ago
15

Characterize the size of an atom.

Chemistry
1 answer:
lana66690 [7]4 years ago
6 0

Atoms are the smallest known substance to man, the building blocks of everything, the atoms size usually depends on the electrons, the electrons are what really takes up space.

And my source ( Google ) says :

Because electrons are what take up space in atoms, the result is that the size of the biggest filled orbital determines the size of the atom or ion. Sizes of orbitals depend on the quantum numbers (n = 1, n = 3, etc.) and also on the effective nuclear charge.

Hope this helps, if not, comment below please!!!!

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ruslelena [56]
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5 0
3 years ago
In which situation is no work considered to be done by a force?
Elena L [17]
Work is done when the application of a force causes movement of an object in the direction of the force.
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6 0
3 years ago
A sample that contains aluminum is reacted with sulfuric acid according to the equation given below. When the aluminum dissolves
GrogVix [38]

Answer:

m_{H_2}=0.0574gH_2

Explanation:

Hello,

In this case, the information about the pressure, volume and temperature are enough to compute the mass of hydrogen assuming its ideal behavior:

n_{H_2}=\frac{PV}{RT}=\frac{739mmHg*\frac{1atm}{760mmHg}*0.722 L}{0.082 \frac{atm*L}{mol*K}*298.15K} =0.0287molH_2

The mass is:

m_{H_2}=0.0287molH_2*\frac{2gH_2}{1molH_2} \\m_{H_2}=0.0574gH_2

Best regards.

5 0
3 years ago
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sergey [27]
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7 0
3 years ago
What are the respective concentrations (M) of Mg2+and Cl-afforded by dissolving 0.325 mol MgCl2 in water and diluting to 250 mL?
fomenos

Answer: D) 1.30 and 2.60

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n = moles of solute

V_s = volume of solution in ml

molarity  of MgCl_2 = \frac{0.325\times 1000}{250ml}=1.30 M

MgCl_2\rightarrow Mg^{2+}+Cl^{-}

As 1 mole of MgCl_2 dissociates to give one mole of Mg^{2+} and two moles of  Cl^- ions .

Molarity of Mg^{2+} = 1.30 M

Molarity of Cl^{-} = 1.3 M\times 2=2.60M

3 0
3 years ago
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