There are 3 reactions of Calcium Carbonate, CaCO₃, that can be formed in this particular problem:

Reaction 1: Calculate the ΔH₁
Reaction 2: ΔH₂ = -635.1 kJ
Reaction 3: ΔH₃ = 178.3 kJ

Explanation:

water can be separated from salt solution by simple distillation. This method works because water has a much lower boiling point than salt. When the solution is heated, the water evaporates. It is then cooled and condensed into a separate container.

Answer:

Vanadium in given compound is metal and oxygen is non-metal so, the given compound is a binary ionic compound.

Explanation:

a. much smaller mass and oppisite charge.

The engine displacement in cubic nanometer (nm³) is 8.785×10²⁴ nm³

1 in³ = 1.639×10²² nm³

With the above convesion scale we can obtain the displacement in nm³

1 in³ = 1.639×10²² nm³

Therefore,

536 in³ = 536 × 1.639×10²²

536 in³ = 8.785×10²⁴ nm³

Thus, the displacement in nm³ is 8.785×10²⁴ nm³

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[tex]\tt \rho=\dfrac{m}{v}=\dfrac{7\times 10^2~g}{1.3~g/L}=538~L[/tex]

Answer:

is 5509.12

Explanation:

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Explanation:

Consider that strong bases are strong nucleophiles, and thus unstable with the negative charge associated with dissociation from the molecule. Hence, strong bases are generally very poor leaving groups, but can be converted into good leaving groups that are more stable with the associated negative charge.

Answer:

salinity is the concentrations of salts in water or soils, chlorinity is a measure of the concentration of halides in one kilogram of seawater. Explanation:
srry if its wrong ;-;

Answer:

Chlorinity and salinity are both measures of the saltiness of sea water. The relationship can be expressed mathematically, as salinity is equivalent to 1.80655 times the chlorinity.

Conclusion:

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Mathematics

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Answered by: ms115

Answer:  For the reaction 2HCl(g) ==> H2(g) + Cl2(g), the Keq = [H2(g)][Cl2(g)]/[HCl(g)]^2

Explanation:

Answer:

first option - liquid particles gain kinetic energy and start moving faster around each other

Explanation:

this is a rising section of the graph, meaning that the state of matter is not changing but it warming up and increasing particle movement. This increase in movement is explained by the increase in kinetic energy. (when the kinetic energy rises, the movement rises)

Answer:

sorry man i cant help you i tried my best im so so so sorry

Explanation:

Answer:

emi should put it in a metal container and place directly to the sun emi should place two mirrors opposite it and that will increase the heat which will melt the Marsh mallow

Answer:

c-d

Explanation:

this is a section of the graph sloping down, meaning the state of matter isn't changing but is getting ready too (the actually changing of states happens in the flat sections). A-B is the gas cooling, b-c is the gas changing into liquid, which leads to the liquid cooling in the next section

Answer: You need approximately 70 g of potassium carbonate.

Explanation:

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The percent composition of water will be 15%

The percent composition of a component of a compound is found by dividing the mass of the component by the mass of the compound.

In other words:

Percent composition = mass of component/mass of substance x 100

In this case, the formula for barium chloride dihydrate is [tex]BaCl_2.H_4O_2[/tex]

The molar mass of the compound is 244.26 g/mol

The molar mass of the water component is 18 x 2 = 36 g/mol

Thus, the percent composition of water in the compound can be found, such that:

Percent composition of water = 36/244.26 x 100

                                      = 15% to the nearest whole number.

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Answer:

[tex]keq=\frac{[NH_{3} ]^2}{[N_{2} ][H_{2} ]^3}[/tex]

Explanation:

Answer: The empirical formula for C6H12O6 is CH2O. Every carbohydrate, be it simple or complex, has an empirical formula CH2O

Explanation:

From what we know, we can confirm that the difference measured by the experiment in the heat released when compared to the hydrogenation of an imaginary cyclohexatriene is called the stabilization energy of benzene.

This is a term used to describe the difference in measured energy of a chemical structure compared to the theoretical energy amounts expected to be measured. In this experiment, the heat that was released did not match the calculated energy expected, which is a prime example of stabilization energy at work.

Therefore, we can confirm that the difference measured by the experiment is called the stabilization energy of benzene.

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Answer:

The Changes I see is the Hot glass have less air bubbles than the Cold Glass. The Cold Glass has more air bubbles than the Hot Glass.

I hope this helps. I tried my best!! Good Luck!!

Answer:

C.) Sodium Chloride

Explanation:

Table salt is an example of an ionic compound. Sodium and chlorine ions come together to form sodium chloride or NaCl.

Answer: Celsius, Fahrenheit, Kelvin, and Rankine.

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Answer:

b option sir sidd dichhi good book goo

Answer:

Carbon Dioxide

Explanation:

This is a covalent compound so to name it you have one carbon, no prefix needed, & 2 oxygen the prefix for 2 is Di-.

Answer:

1 mole contains 6.02 ×10^23 atoms

1 mole of Sulphur will contain 6.02 ×10^23 atoms

2moles of. Oxygen will contain 2 x 6.02×10^23 atoms. This gives 12.04 × 10^23 atoms

Answer:

Multiply 0.0543 L by a 1000 to get to mL, move the decimal point 3 times to the right, and you get 54.3 mL

Answer:

it's a I took the test

Explanation

Answer:

A) The new substance will need more energy to form its chemical bonds than the old substance will release.

Explanation:

Answer:

58.92 g EDTA

Explanation:

315.1 mL = .3151 L    

M = Moles / Liter

.3151 L  x 0.5 mol EDTA  x  374 g EDTA  =  58.92 g EDTA

                1 L EDTA             1 mol EDTA

The amount in grams of EDTA needed to make 315.1 mL of a 0.05 M is equal to 5.89 g.

In a 0.05M solution, there are 0.05 moles of the substance per 1 liter, that is, in 315.1 ml we have:

                                        [tex]\frac{0.05 mol}{xmol}= \frac{1000ml}{315.1ml}[/tex]

                                           [tex]x = 0.016 mol[/tex]

Thus, 0.016 mol EDTA of  is needed to prepare the solution.

To calculate the mass in an amount of moles, we use the molar mass, so that:

                                          [tex]m = MM \times mol[/tex]

                                         [tex]m = 374 \times 0.016[/tex]

                                             [tex]m = 5.89 g[/tex]

So, the amount in grams of EDTA needed to make 315.1 mL of a 0.05 M is equal to 5.89 g.

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The statements that are applicable to Hess's Law include:

Hess's Law is also referred to as Hess's law of constant heat summation and it was named after a Swiss-born Russian chemist called Germain Hess.

Hess's Law states that the energy change experienced in an overall chemical reaction is equal to the sum of the energy changes in each chemical reactions that it contains.

In conclusion, the enthalpy change of a chemical reaction which is the heat of reaction at constant pressure is independent of the pathway between its initial and final states.

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Answer:

number 2 becaus 1 and 3 look simler.

Explanation: