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grin007 [14]
3 years ago
8

Write the electron configuration for each atom A. Carbon B. Argon C. Nickel

Chemistry
1 answer:
gayaneshka [121]3 years ago
5 0
I will assume you know how to do electron configurations, since they can be hard to explain.
Carbon is the 6th element: it goes 
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Given 40 grams of magnesium. How many mole is this
Dahasolnce [82]

To determine the moles in 40 grams of magnesium, we need the atomic weight. This can easily be found on a periodic table. For this problem, let's use 24.305 grams/mole.

We are going to set up an equation to determine this problem. In this equation, we want all our units to cancel out except for 'moles.'

\frac{40 g Mg}{1} x\frac{1 mole Mg}{24.305 g Mg}

In this, we can see that the unit 'grams' will cancel out to leave us with moles.

In solving the equation, we determine that there are approximately 1.65 moles of Magnesium.

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3 years ago
Red light has a wavelength of about 7×10−7 m. will exposure to red light cause electrons to be emitted from cesium?
lorasvet [3.4K]
No i dont think so i checked in my book


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3 years ago
Arrange the following oxides in order of increasing acidity.
zmey [24]

Answer:

Based on the Modern Periodic table, there is an increase in the electropositivity of the atom down the group as well as increases across a period. On comparing the electropositivities of the mentioned oxides central atom, it is seen that Ca is most electropositive followed by Al, Si, C, P, and S is the least electropositive.  

With the decrease in the electropositivity, there is an increase in the acidity of the oxides. Thus, the increasing order of the oxides from the least acidic to the most acidic is:  

CaO > Al2O3 > SiO2 > CO2 > P2O5 > SO3. Hence, CaO is the least acidic and SO3 is the most acidic.  

5 0
3 years ago
The average kinetic energy of a body is called
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Temperature is a measure of average kinetic energy of particles in an object. The hotter the substance, higher is the average kinetic energy of its constituent particles.
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How many protons, neutrons, and electrons are in Ca-44?
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Neutrons = 20
Hope this Helps :)
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