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3 years ago

The radius of an atom is closest in size to a

Chemistry

1 answer:

Andreas93 [3]3 years ago

5 0

Answer:

Explanation:

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. Since the boundary is not a well-defined physical entity, there are various non-equivalent definitions of atomic radius. Three widely used definitions of atomic radius are: Van der Waals radius, ionic radius, and covalent radius.

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A 1.00 L volume of HCl reacted completely with 2.00 L of 1.50 M Ca(OH)2 according to the balanced chemical equation below. 2HCl

wolverine [178]

Answer:

$\boxed{\text{6.00 mol/L}}$

Explanation:

(a) Balanced equation

2HCl + Ca(OH)₂ ⟶ CaCl₂ + 2H₂O

(b) Moles of Ca(OH)₂

$\text{Moles of base} = \text{2.00L} \times \dfrac{\text{1.50 mol}}{\text{1 L}} = \text{3.000 mol base}$

(c) Moles of HCl

$\text{Moles of HCl} = \text{3.000 mol base} \times \dfrac{ \text{2 mol HCl}}{\text{1 mol base}} = \text{6.000 mol HCl}$

(d) Molar concentration of HCl

$\text{Molar concentration} = \dfrac{\text{moles of solute}}{\text{litres of solution}}\\\\c = \dfrac{ n }{ V}\\\\c= \dfrac{ \text{6.000 mol}}{ \text{1.000 L}} = \text{6.00 mol/L}$

The molar concentration of the HCl was $\boxed{\textbf{6.00 mol/L}}$

6 0

3 years ago

Read 2 more answers

NEED THIS NOW!! !

ivolga24 [154]

Atoms cannot be created or detroyed, only rearranged.

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3 years ago

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The water behind a dam has potential energy that can be converted to kinetic energy to turn a turbine

Savatey [412]

This is true because the water would have gravitational potential energy that is caused by the water being held back by the dam and the water wanting to flow down.

This can be converted into kinetic energy when given the chance to, such as having a turbine on the dam.

Hope this helps! :)

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4 years ago

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a 9.84 ounces ingot of unknown metal is heated from 73.2 degrees fahrenheit - 191.2 degrees fahrenheit this requires 3.912 calor

Gekata [30.6K]

The SI unit of specific heat is J per gram per degree Celsius. Thus it follows that specific heat could be calculated in this way:

Specific Heat = Energy / (mass x change in temperature)

Thus,

Specific Heat = 3.912 cal / (9.84 oz x (191.2 ˚F – 73.2 ˚F))

Specific Heat = 3.369 x 10^-3 cal/oz-˚F

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4 years ago

What type of reaction occurs when two hydrogen atoms collide at high speed combining together into a helium atom: alpha decay, b

Elan Coil [88]

Answer:

fusion when you fuse things you combine them.

Explanation:

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3 years ago