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3 years ago

Which of the following has the shortest bond lenght Options A). H2 B).N2 C).O2 D).F2

Chemistry

1 answer:

hammer [34]3 years ago

6 0

Answer:

B. N2

Explanation:

The triple bonds pull the atoms closer together, and since N2 is the only molecule with the triple bond, it is the shortest bond length.

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Can someone please help me with 363?

Hitman42 [59]

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Explanation:

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3 years ago

How many moles of oxygen are in 8.24 moles Mg(NO3)2

malfutka [58]

Answer:

49.4 mol Oxygen

Explanation:

Mg(NO3)2 ----- 6 O

1 mol 6 mol

8.24 mol x mol

x = 8.24*6/1 = 49.44 mol ≈ 49.4 mol Oxygen

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3 years ago

The volume of an automobile air bag was 66.8 L when inflated at 25 °C with 77.8 g of nitrogen gas. What was the pressure in the

Ray Of Light [21]

Answer:

$\large \boxed{\text{103 kPa}}$

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 66.8 L

m = 77.8 g

T = 25 °C

Calculations:

(a) Moles of N₂

$\text{Moles of N}_{2} = \text{77.8 g N}_{2} \times \dfrac{\text{1 mol N}_{2}}{\text{28.01 g N}_{2}} = \text{2.778 mol N}_{2}$

(b) Convert the temperature to kelvins

T = (25 + 273.15) K = 298.15 K

(c) Calculate the pressure

$\begin{array}{rcl}pV & =& nRT\\p \times \text{66.8 L} & = & \text{2.778 mol} \times \text{8.314 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 298.15 K}\\66.8p & = & \text{6886 kPa}\\p & = & \textbf{103 kPa}\end{array}\\\text{The pressure in the bag is $\large \boxed{\textbf{103 kPa}}$}$

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3 years ago

The atomic mass represented on an element tile on the Periodic Table

Yuki888 [10]

C. protons and neutrons combined

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3 years ago

Why do atoms of different elements vary in size?

Usimov [2.4K]

Answer:

As you go down the periodic table, usually atoms get bigger because n gets bigger (there are electrons in higher shells). Effective nuclear charge does get bigger too going down the periodic table, but this effect is smaller than the change in shell.

Explanation:

7 0

3 years ago

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