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JulijaS [17]
2 years ago
9

Strontium compounds are often used in flares because their flame color is bright red. One industrial process to produce low-solu

bility strontiun) compounds (that are less affected by getting wet) involves the reaction of aqueous solutions of strontium nitrate and sodium carbonate. Write the balanced molecular equation, the total ionic equation and the net ionic equation for this reaction.
Chemistry
1 answer:
Illusion [34]2 years ago
3 0

Answer:

Sr(NO3)2 + Na2CO3 --------> SrCO3 + 2NaNO3

Total ionic equation;

Sr^2+ + NO3^- + Na^+ + CO3^2- -----> SrCO3 + 2NaNO3

Net ionic equation;

Sr^2+ + CO3^2- -----> SrCO3

Explanation:

The molecular equation shows the reactions of the compounds to give the products. It shows the molecular formula of reactants and products.

The total ionic equation shows the ions that recombine to form the products of the reaction.

The net ionic shows the major ionic reaction that took place in the system.

Hence, the net ionic equation explicitly shows the major species that are involved in a reaction, while a complete ionic equation includes the spectator ions.

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Explain how you would test the presence of oxygen and hydrogen gases. ​
Vedmedyk [2.9K]
Place a burning splint near the opening of a test tube. If a popping noise occurs, it's probably hydrogen. Place a glowing splint in the test tube, and if it reignites, it could be oxygen. Place a burning splint into a test tube, and if it goes out, it could be carbon dioxide.
5 0
2 years ago
Calculate the density of an aluminum block with a volume of 100 cm3 and a mass of 270g.
m_a_m_a [10]

Answer:

<h2>2.7 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{270}{100}  =  \frac{27}{10} \\

We have the final answer as

<h3>2.7 g/cm³</h3>

Hope this helps you

6 0
2 years ago
What determines the velocity of an object
maxonik [38]

Answer:

the direction of the object

Explanation:

4 0
2 years ago
State collision theory
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<h2>OR </h2>

Collision theory states that when suitable particles of the reactant hit each other with correct orientation, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful collisions.

<h3>Explanation:</h3><h3>here your answer mate </h3>

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5 0
2 years ago
The Cr 3+ ion forms octahedral complexes with three neutral ligands X, Y, and Z. The color of CrX 6 3+ is blue; the color of CrY
sergeinik [125]

Answer:The statement which is false is d

Explanation:

The color which we  see from our eyes is basically the complementary color of wavelength of light which is absorbed.

The wavelegth of light follows the following sequence:

Violet<Indigo<Blue<Green<Yellow<Orange<Red.

So the shortest wavelegth is of violet light and longest wavelength of light is Red.

Since energy is E=hv=hc/λ ;So energy is inversely related with wavelegth and hence

For ligand X the complex has blue color and so we can ascertain that ligand X would have absorbed the Red light as the complementary color of blue light is Red.So the complex of ligand X absorbs the longest wavelegth and hence  the energy gap between the two split d-orbitals t2g and eg  would be very less. Larger the energy gap between t2g and eg orbitals more stronger is the ligand .

So X would be a weak field ligand.

For ligand Y the complex has yellow color and so we can ascertain that ligand Y would have absorbed the Violet  light as the complementary color of yellow light is  violet. Violet has the lowest wavelegth and hence  the energy gap between the two split d-orbitals t2g and eg  would be very large. Larger the energy gap between t2g and eg orbitals more stronger is the ligand .

So Y is a strong field ligand.

For ligand Z the complex has red color and so we can ascertain that ligand Z would have absorbed the blue  light as the complementary color of red light is  blue.The wavelegth of  blue light lies between  violet and red hence  the energy gap between the two split d-orbitals t2g and eg  would be  in between than the other two liagnds.

So Z would be moderate field ligand.

options A , B and C are correct statements.

option D is incorrect because Z absorbs the moderate wavelegth.

The answer is d as it is only statement which is incorrect.

6 0
3 years ago
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