Often computers are described as not intelligent. How does the mindstorm prove this?

Examine the following isotopes of silicon (Si).

Vesnalui [34]

Answer:

They all have the same number of protons but different numbers of neutrons.

Explanation:

These are called isotopes. Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons in their various nuclei.

The atomic number is the number of protons in an atom. For a neutral atom, it is the same as the number of electrons.

The mass number is the number of protons and neutrons in an atom.

silicon-28 (28Si)

silicon-29 (29Si)

silicon-30 (30Si)

All of these isotopes have an atomic number of 16

Now let us chech for the neutrons:

Number of neutrons = mass number - atomic number:

for silicon-28 (28Si) : 28-16 = 12 neutrons

silicon-29 (29Si) : 29-16 = 13 neutrons

silicon-30 (30Si): 20-16 = 14 neutrons.

6 0

3 years ago

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Consider the reaction: 2N2O(g) ⇌ O2(g) + 2N2(g). Which of the following will cause a shift in the equilibrium to the right? 1. A

Illusion [34]

Answer:

1. Add N2O and

3. Remove N2

Explanation:

In equilibrium, there is a balance between the concentrations of the reactants and products. If more reactants are added, the equilibrium will shift to the right, favoring the forward reaction. This cause an increase in the concentration of the product and the equilibrium constant is unchanged.

Products can also be removed in order to increase the amount of products formed, forward reaction. This shifts the equilibrium to the right.

In the reaction 2N2O <-----> O2 + 2N2, adding N2O to the mixture favors the forward reaction and more products are formed, equilibrium shifts to the right.

Also, removing the product formed favors the forward reaction as more products will be formed in order to achieve equilibrium. The equilibrium therefore shifts to the right.

4 0

3 years ago

A cell consists of a gold wire and a saturated calomel electrode (S.C.E.) in a 0.150 M AuNO 3 solution at 25 °C. The gold wire i

almond37 [142]

The half reaction that occurs at the Au electrode is 1.64

<u>Explanation:</u>

Half cell reaction at 'Au' electrode

We have the equation,

Au + (aq) + e- ---> Au(s)

Given the concenration of AuNO3=0.150 M

[Au +] =0.150 m

From the equation,

Au + (aq) + e- ---> Au(s)

Standard electric potential= Eo= 1.69 volt

Solving the problem using the Nerst equation

E cell= E0 cell - 2.303 RT/ nF log Qc

Where,

T = 298 K

n= no of electron lost or gained

F= faraday's constant= 965000/mole

R= universal constant= 8.314 J/ K/ Mole

Substitue the values we get

E cell = 1.69 volt - 0.05 g/n log (1/0.150M)

E cell = 1.69 volt - 0.05 g/1 0.824

E cell= 1.64

The half reaction that occurs at the Au electrode is 1.64

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6 0

3 years ago

How many moles are in 56.4 grams of AlF3

Dimas [21]

Answer: 0.671614483912211

Explanation: A mole is 6.02214076×1023 (also known as the Avogadro number) I hope this helps!

8 0

3 years ago

What is the mass of 5.74 x 1021 formula units of sodium hydroxide: NaOH (Mw. 40.00 g/mol)?

taurus [48]

0.38g

Explanation:

Given parameters:

Number of formula units = 5.74 x 10²¹

Molar mass of NaOH = 40g/mol

Unknown:

Mass of NaOH = ?

Solution:

The best way to solve this problem is the use the mole concept.

A mole is the amount of substance that contains the avogadro's number of particles.

The avogadro's number of particles is 6.02 x 10²³particles.

Particles = neutrons, protons, electrons, formula units, e.t.c

To solve this problem, find the the number of moles first then convert to mass.

6.02 x 10²³ formula units = 1 moles

5.74 x 10²¹ formula units = $\frac{5.74 x 10^{21} }{6.02 x 10^{23} }$ = 0.95 x 10 $^{-2}$ moles

Mass of NaOH = number of moles x molar mass = 0.0095 x 40 = 0.38g

learn more:

Molar mass brainly.com/question/2861244

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8 0

3 years ago