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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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Answer:

the sum of average kinetic molecules of the body is called temperature..

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:

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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Thank You!

Answered by: ms115

Answer:

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

Explanation:

Answer: Celsius, Fahrenheit, Kelvin, and Rankine.

Hope this helped you!

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:

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

Explanation:

Answer: You need approximately 70 g of potassium carbonate.

Explanation:

Hope this helps :) Good Luck!

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

The ΔG for the reaction shown is -11.76 kJ/mol.

The equilibrium constant is a value that shows the extent to which reactants are converted to products in a reaction. We have to first obtain the equilibrium constant as follows;

K = (0.750)^2/(0.160) (0.100) = 35

Now;

Using the formula;

ΔG = -RTlnK

ΔG = -(8.314 × 398 × ln 35)

ΔG = -11.76 kJ/mol

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

Explanation:

In 145.45 grams of water there are 160mg of 0.0011% Pb.

To resolve this issue, it is necessary to use the concentration of solutions, which indicates the percentage amount of one solvent or solute in relation to the other.

In the case of the question, we have that Pb is at a concentration of 0.0011%, that is, for every 100 grams of water we have 0.0011 grams of Pb.

So, to calculate the amount of water that we have 160mg of Pb, we will make the following expression:

                                           Pb           H2O

                                            [tex]\frac{0.0011g}{160\times 10^ {-3}g} =\frac{1g}{x}[/tex]

                                            [tex]x = 145.45g[/tex]

So, in 145.45 grams of water there are 160mg of 0.0011% Pb.

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Answer:

number 2 becaus 1 and 3 look simler.

Explanation:

what's up? i don't think D words it that well, but i would think it's D since none of the other answers make sense

Answer:

so you can give it

Explanation:

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:

b option sir sidd dichhi good book goo

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

Explanation:

This problem is providing us with the mass equivalent to one troy ounce. Thus, the troy ounces of gold in one short ton of average Nevada ore is required and found to be the 0.103 otz according to the following dimensional analysis.

In chemistry, a raft of problems do not always provide an equation in order to be solved yet dimensional analysis can be applied, so as to obtain the desired amount in the required units.

Thus, since this problem asks for try ounces in an average Nevada ore,  which has 3.2 grams of gold per short ton of ore, one can solve the following setup in order to obtain the required answer in otz:

[tex]\frac{3.2gAu}{1short-ton}*1short-ton*\frac{1otz}{31.1g} \\[/tex]

Where the short tons are cancelled out as well as the grams, in order to obtain:

[tex]0.103 otz[/tex]

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Answer:

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

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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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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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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Answer:

is 5509.12

Explanation:

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