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3 years ago

Four students presented different analogies to describe the formation of an ionic bond.

Chemistry

2 answers:

jeka57 [31]3 years ago

5 0

Answer:

the correct answer is A

Explanation:

I took the test!

Klio2033 [76]3 years ago

5 0

Answer:

A probably because its ionic

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0. 34 ll of hno3hno3 is titrated to equivalence using 0. 14 ll of 0. 1 mnaohmnaoh. what is the concentration of the hno3hno3 ?

Sphinxa [80]

When 0.34 of HNO₃ is titrated to equivalence using 0.14 l of 0.1 m NaOH then the concentration of HNO₃ is 0.041 M

The reaction of neutralization of HNO₃ with NaOH is

HNO₃ + NaOH → H₂O + NaNo₃

When 1 mole of HNO₃ react with 1 mole of NaOH, based on chemical rection the moles of NaOH at equivalence point are equal to moles of HNO₃ present in solution: -

With the mole and volumes, we can find molarity as follows:

Moles of NaOH = moles HNO₃

⁼ 0.14 L X (0.1 mol NaOH/L) = 0.014 mole NaOH

=0.014 mol HNO₃

Molarity: -

$\frac{(Mole of HNO₃)}{(volume of HNO₃)}= \frac{0.014}{0.34}$

= 0.041 M

Thus, from above solution we concluded that the concentration of HNO₃ solution is 0.041 M.

Learn more about molarity: brainly.com/question/8732513

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6 0

2 years ago

Student took 1.52ml of a stock CuSO4 solution, with a given concentration of 3.26mg/ml. He then added water to the solution unti

Bumek [7]

To solve this we use the equation,

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

4 0

3 years ago

A sample of quartz, which has a specific heat capacity of , is dropped into an insulated container containing of water at and a

klasskru [66]

This question is incomplete, the complete question is;

A 17.0 g sample of quartz, which has a specific heat capacity of 0.730 J.g⁻¹°C⁻¹, is dropped into an insulated container containing 200.0 g of water at 85°C and a constant pressure of 1 atm . The initial temperature of the quartz is 7.2°C.

Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has the correct 3 number of significant digits.

Answer:

the equilibrium temperature of the water is 83.9°C

Explanation:

Given the data in the question;

Since no heat is absorbed from or by the container, or the surroundings;

Then Heat lost by the quartz = heat gained by water

ΔH1 = ΔH2

DH = mcΔT

where m is mass, C is specific heat capacity and ΔT is temperature change;

(mcΔT)1 = (mcΔT)2

we know that; specific heat capacity of is 4200 Joule/Kilogram K (J/kg∙K) = 4.2 (J/g∙°C)

we substitute

17.0g × 0.730 J.g⁻¹°C⁻¹ × ( 7.2°C - T2) = 200.0g × 4.2 J/g∙°C × ( T2 - 85°C)

89.352 - 12.41T2 = 840T2 - 71400

840T2 + 12.41T2 = 89.352 + 71400

852.41T2 = 71489.35

T2 = 71489.35 / 852.41 = 83.86°C ≈ 83.9°C

Therefore, the equilibrium temperature of the water is 83.9°C

3 0

3 years ago

What is the hybridization state on the central N atom in the azide ion, N3−?

Sloan [31]

The sp hybridization of the central nitrogen is consistent with the linear structure of the azide ion. In A, the terminal nitrogens may both be sp2 hybridized; after all the drawing looks similar to the double bond in ethylene.

4 0

3 years ago

A scientist dissolves 10 g of NaOH into 0.275 L of water. What is the

Damm [24]

The answer is 0.9091 M

5 0

3 years ago