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Chemistry

04/04/23

What is the concentration of the H2SO4 solution?

20.0020.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 35.7135.71 mL of a 0.12070.1207 M NaOH solution.

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Chemistry

04/04/23

Given what you know about the specific heats of various substances, why are pots and pans made of metal? This is because they have

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Chemistry

04/04/23

Payment error with chemistry session

Hello! My name is Emma Cusano. I am new to using the Wyzant app. I have had a good experience so far. However, yesterday I had a session with a tutor and our session was 1hr and 5mins. I was... more

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Chemistry Biology

04/04/23

Does anyone know about the process of becoming a tutor for wyzant?

I would love to tutor in biology or chemistry, but am unsure how to get started.

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Chemistry

04/03/23

what is the wavelength differences between visible light and ultraviolet?

Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more

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Chemistry

04/03/23

chemistry wavelengths

Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more

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Chemistry

04/03/23

chemistry wavelengths

Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more

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Answers •1

Chemistry

04/03/23

chemistry wavelengths

Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more

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Answers •1

Chemistry

04/03/23

Chemistry Wavelengths

Visible light has wavelengths from 400 to 700 nm, whereas the wavelength region for ultraviolet radiation is 1.0×10-8 to 1.0×10-7 m.We can say that:1. The frequency of visible light is (higher... more

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Answers •1

Chemistry

04/03/23

Chemistry Frequency

The energy of this wavelength of light is 1.00 x 10^-8 to 1.00 x 10^-7 kJ/photon.What is the wavelength of ultraviolet radiation that has an energy of 1.99 x 10^-20 kJ/photon?Wavelength... more

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Chemistry

04/03/23

Chemistry Frequency

The wavelength of a particular color of green light is 534 nm.The energy of this wavelength of light is .... kJ/photon.

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Chemistry

04/03/23

Chemistry Frequency

A local FM radio station broadcasts at an energy of 6.29 x 10^-29 kJ/photon. (1MHz = 10^6 s -1) Calculate the frequency at which it is broadcasting.Frequency = ... MHz

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Chemistry

04/03/23

The solubility of a slaked lime, Ca(OH)2, in water is 0.185g/100.0 mL. What volume of 2.95×10-3 M HCl is needed to neutralize 13.0 mL of a saturated Ca(OH)2 solution? Answer is in mL.

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Chemistry

04/03/23

find perimeter centimeters

Find the perimeter of 25 a rectangle whose length is centimeters and whose width is 14 centimeters less than its len

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Chemistry

04/03/23

Solve for the enthalpy change of steam reforming methane

The steam reforming of methane occurs according to the following chemical equation: CH₄(g) + 2H₂O(g) ⇌ CO₂(g) + 4H₂(g) Use the following equations to solve for the enthalpy change of steam... more

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Chemistry

04/03/23

What is the change in enthalpy when 1.50 moles of H2 are reacted with an excess O₂ of according to the following balanced chemical reaction: 2H₂(g)+O₂(g)→2H₂O(l) ∆H=-572 kj

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Chemistry

04/03/23

find candle globe diameter

An oil candle globe made of hand-blown glass has a diameter of 19.4 cm. What is the volume of the globe? Use 3.14 for .

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Chemistry

04/03/23

Finding Corn and height

A cone with a height of 13 inches has a circular base with a diameter of 12 inches. Find its volume.

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Chemistry Math Physics Organic Chemistry

04/02/23

crystal lattice of a material

What is the crystal lattice of a material having the CFC crystal structure with a unit cell consisting of copper (Cu) and silver (Ag) atoms?how the choice of atoms that make up the crystalline... more

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Chemistry

04/02/23

In the reaction, 2HgO(s)⟶2Hg(s)+O2(g) what mass of mercury(II) oxide, HgO, would be required to produce 905 L of oxygen, O2, measured at STP?

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Chemistry

04/01/23

A 0.105 L sample of an unknown HNO3 solution required 41.1 mL of 0.150 M Ba(OH)2 for complete neutralization. What is the concentration of the HNO3 solution?

Balanced Equation: 2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq)

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Chemistry

04/01/23

Determine the volume in milliliters of a 0.260 M NaOH solution needed to neutralize a 295 mL solution of 0.173 M HCl and 0.346 M H2SO4.

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Chemistry

04/01/23

Determine the volume in milliliters of a 0.260 M NaOH solution needed to neutralize a 295 mL solution of 0.173 M HCl and 0.346 M H2SO4.

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Chemistry

04/01/23

What volume of 0.100 M KOH is needed to react completely with 17.7 mL of 0.300 M H2SO4 ?

Balanced equation H2SO4(aq)+2KOH(aq)⟶2H2O(l)+K2SO4(aq)

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Chemistry

04/01/23

How many moles of C5H12 (pentane) must be reacted according to the following balanced chemical reaction to transfer -297.6 kj of heat? C5H12(l)+8O2(g)→5CO2(g)+6H2O(g) ∆H=-3508.8 kj

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What is the concentration of the H2SO4 solution?

Given what you know about the specific heats of various substances, why are pots and pans made of metal? This is because they have

Payment error with chemistry session

Does anyone know about the process of becoming a tutor for wyzant?

what is the wavelength differences between visible light and ultraviolet?

chemistry wavelengths

chemistry wavelengths

chemistry wavelengths

Chemistry Wavelengths

Chemistry Frequency

Chemistry Frequency

Chemistry Frequency

The solubility of a slaked lime, Ca(OH)2, in water is 0.185g/100.0 mL. What volume of 2.95×10-3 M HCl is needed to neutralize 13.0 mL of a saturated Ca(OH)2 solution? Answer is in mL.

find perimeter centimeters

Solve for the enthalpy change of steam reforming methane

What is the change in enthalpy when 1.50 moles of H2 are reacted with an excess O₂ of according to the following balanced chemical reaction: 2H₂(g)+O₂(g)→2H₂O(l) ∆H=-572 kj

find candle globe diameter

Finding Corn and height

crystal lattice of a material

In the reaction, 2HgO(s)⟶2Hg(s)+O2(g) what mass of mercury(II) oxide, HgO, would be required to produce 905 L of oxygen, O2, measured at STP?

A 0.105 L sample of an unknown HNO3 solution required 41.1 mL of 0.150 M Ba(OH)2 for complete neutralization. What is the concentration of the HNO3 solution?

Determine the volume in milliliters of a 0.260 M NaOH solution needed to neutralize a 295 mL solution of 0.173 M HCl and 0.346 M H2SO4.

Determine the volume in milliliters of a 0.260 M NaOH solution needed to neutralize a 295 mL solution of 0.173 M HCl and 0.346 M H2SO4.

What volume of 0.100 M KOH is needed to react completely with 17.7 mL of 0.300 M H2SO4 ?

How many moles of C5H12 (pentane) must be reacted according to the following balanced chemical reaction to transfer -297.6 kj of heat? C5H12(l)+8O2(g)→5CO2(g)+6H2O(g) ∆H=-3508.8 kj

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