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4 years ago

How are atomic and molecular orbitals related?

2 answers:

7 0

Atomic orbital make molecular orbital. When two atoms combine, theiratomic orbitals overlap to producemolecular orbitals. Just as an atomic orbital belongs to a particular atom, amolecular orbital belongs to amolecule as a whole. ... a bond that is formed when parallel orbitals overlap to share electrons.

Yakvenalex [24]4 years ago

4 0

Atomic orbital make molecular orbital. When two atoms combine, their atomic orbitals overlap to produce molecular orbitals. Just as an atomic orbital belongs to a particular atom, a molecular orbital belongs to a molecule as a whole. Both atomic and molecular orbitals are required to fill with 2 electrons.

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What can scientists learn by studying fossils? I HAVE ANSWER

aliina [53]

Answer:

dweyflgyegfuyegfyegrygeyrgyr8ogeyurkgevyrujfryujftewy

Explanation:

jk b or e

3 0

3 years ago

A 500 mL sample of 0.5 M NaOH at 20 C is mixed with an equal volume of 0.5 M HCl at the same temperature in a calorimeter. The t

Pepsi [2]

Answer: Heat of reaction ∆H = -13.43kJ

Explanation:

The number of moles of NaOH = the number of moles of HCL = N

N = concentration × volume= CV = 0.5M × 500mL/1000ml/L

N= 0.5 × 0.5= 0.25mol

Since the Molar enthalpy is given by Hm = -53.72kJ/mol

Heat of reaction ∆H = N×Hm

∆H= 0.25mol × -53.72kJ/mol = -13.43kJ

Heat of reaction ∆H = -13.43kJ

5 0

3 years ago

Crystals are characterized by particular patterns that repeat in how many dimensions? A. three dimensions

Andreyy89

A option is correct answer .

8 0

4 years ago

Read 2 more answers

A sample of tin (Cp = 0. 227 J/gâ€˘Â°C) is placed in a freezer. Its temperature decreases from 15. 0Â°C to â’10. 0Â°C as it rele

pshichka [43]

Taking into account the definition of calorimetry, the mass of the sample is 478.41 grams.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Q= -543 J because the energy is releases
c= 0.227 $\frac{J}{gC}$
m= ?
ΔT= Tfinal - Tinitial= 10 C - 15 C= -5 C

Replacing:

-543 J= 0.227 $\frac{J}{gC}$ × m× (-5 C)

Solving:

$m=\frac{-543 J}{0.227 \frac{J}{gC}x(-5 C)}$

<u><em>m=478.41 grams</em></u>

In summary, the mass of the sample is 478.41 grams.

Learn more about calorimetry:

4 0

3 years ago

Find the pH of a 0.00476M HCI solution

Alex777 [14]

Ans：2.3

Explanation:

pH = -log[H+(aq)]

= -log[0.00476]

=2.3

As HCl solution is monobasic. Each molecule ionizes in water to form ONE hydrogen ion. So the H+(aq) is equal to its molarity.

5 0

3 years ago