04/06/21

A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.9 nm. What is the final state of the hydrogen atom?
A ground state hydrogen atom absorbs a photon of light having a wavelength of  What is the final state of the hydrogen atom?
Follows • 2
Expert Answers •1

04/06/21

Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level 𝑛=5 to the level 𝑛=1.
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level  n = 5to the level n = 1 
Follows • 2
Expert Answers •1

04/06/21

chemistry question help
In the balanced chemical equation for the reaction of sodium with water, what is the coefficient in front of sodium?
Follows • 2
Expert Answers •1

04/06/21

chemistry help please
If sodium metal is placed in water, hydrogen gas is one product. What is the name of the other product?
Follows • 2
Expert Answers •1

04/06/21

Chemistry question below
The temperature of a sample of sulfur hexafluoride is changed, causing a change in volume from 376.6 mL to 1690.7 mL. If the starting temperature was 555.69 °C, what is the final temperature in... more
Follows • 2
Expert Answers •1

04/06/21

Predict the products of the following reaction and determine if they are soluble(aq) or insoluble(s)

1. LiBr + NaOH à 2. BaSO4 + FeCl2 à 3. KCl + AgI à 4. CuCl2 + KNO3 à 5. PbSO4 + AgNO3 à
Follows • 1
Expert Answers •1

04/06/21

The oxidation number of Cl in HClO₄ is
The oxidation number of Cl in HClO₄ is ?
Follows • 2
Expert Answers •1

04/05/21

2 H2O(g) 2 H2(g) + O2(g)
2 H2O(g) 2 H2(g) + O2(g)If the K is 7.9×103 at a certain temperature. At equilibrium, it is found that [H2] = 6.2×10-2 M and [O2] = 2.1×10-2 M.The concentration of H2O at equilibrium... more
Follows • 2
Expert Answers •1

04/05/21

2 NOBr(g) 2 NO(g) + Br2(g)
If the constant for is 23.1 of this reaction: 2 NOBr(g) 2 NO(g) + Br2(g) ,And the concentrations of NO and Br2 were both 0.784 MAt equilibrium, the concentration of NOBr is?.........M
Follows • 2
Expert Answers •1

04/05/21

How Do you solve how many grams of CE2(SO4)3 would it take to raise the temperature of 50mL
Assuming it would dissolve, how many grams of Ce2(SO4)3 would it take to raise the temperature of 50 mL of water by 10°C? Show your work.
Follows • 2
Expert Answers •1

04/05/21

A system does 591kJ of work and loses 241kJ to the surroundings. What is the change of energy?
-350KJ -241KJ +832KJ -832KJ +350KJ
Follows • 2
Expert Answers •2

04/05/21

Identify the conjugate acid for each base
conjugate acid of PO3−4: ?conjugate acid of NH3: ?
Follows • 2
Expert Answers •1

04/05/21

Naphthalene, C10H8, is used to make mothballs. Suppose you have a 0.0661m solution of Naphthalene in chloroform, CHCl3; calculate the new vapor pressure of the solution.
Follows • 2
Expert Answers •1

04/05/21

Calculate the vapor pressure at 35C of a solution made by dissolving 20.2g of sucrose, C12H22O11, in 60.5g of water.

V.P water 35 C = 42.2 mmHg
Follows • 2
Expert Answers •1

04/05/21

What is the pH of a saturated solution of Cd(OH)₂? (Ksp for Cd(OH)₂ = 7.2 × 10⁻¹⁵).
Follows • 2
Expert Answers •1

04/05/21

The solubility of PbSO₄ in water at 25 °C is 7.9 × 10⁻⁴ M. What is Ksp for PbSO₄?
Follows • 2
Expert Answers •1

04/05/21

Based on the information above, the maximum concentration of Ca2+(aq) that can be present in drinking water without lowering the concentration of F−(aq) below the ideal level is closest to
CaF2(s)⇄Ca2+(aq)+2F−(aq)          Ksp=4.0×10−10The concentration of F−(aq) in drinking water that is considered to be ideal for promoting dental health is 4.0×10−5M. Based on the information above,... more
Follows • 2
Expert Answers •1

04/05/21

In a saturated solution of Zn(OH)2 at 25°C, the value of [OH-] is 2.0 x 10-4 M. What is the value of the solubility-product constant, Ksp, for Zn(OH)2 at 25°C ?
In a saturated solution of Zn(OH)2 at 25°C, the value of [OH-] is 2.0 x 10-4 M. What is the value of the solubility-product constant, Ksp, for Zn(OH)2 at 25°C ? 8.0 x 10-12 4.0 x 10-12 2.0 x 10-4
Follows • 2
Expert Answers •1

04/05/21

What is the value of the equilibrium constant, Kc ?
X(g) + Y(g) ⇄ 2Z(g)When 6.00 mol each of X(g) and Y(g) are placed in a 1.00 L vessel and allowed to react at constant temperature according to the equation above, 8.00 mol of Z(g) is produced. What... more
Follows • 2
Expert Answers •1

04/05/21

More H2 gas is added to the system at time t2 while the temperature is held constant. Which of the following will most likely occur?
3 H2(g) + N2(g) ⇄ 2 NH3(g)         ΔHo = -92 kJ/molrxnThe diagram below shows how the concentrations of H2 , N2 , and NH3 in this system changed over time.More H2 gas is added to the system at time... more
Follows • 2
Expert Answers •1

04/05/21

Equilibrium answer all components Justify with a calculation. 
Calcium hydroxide is only slightly soluble in water. The Ksp value of Ca(OH)2 is 1.3 x 10-6.(a) Write the equation for the dissociation of calcium hydroxide in water and the solubility product... more
Follows • 2
Expert Answers •1

04/05/21

How do you find [H30+] and [OH-] of a acid with a molarity of .1M
How do you find [H30+] and [OH-] of a acid with a molarity of .1M
Follows • 2
Expert Answers •1

04/05/21

How do you find [H30+] and [OH-] of a base with a molarity of .026M
How do you find [H30+] and [OH-] of a base with a molarity of .026M
Follows • 2
Expert Answers •1

04/05/21

Ethalpy reactions
The following reaction is endothermic. MgCl2(s) Mg(s) + Cl2(g)    ΔH(1) = 641 kJ Calculate the enthalpy change for the reaction of the elements to form one mole... more
Follows • 2
Expert Answers •1

04/05/21

Calculate enthalpy change
Given the following two reactions:(1)Pb(s) + Cl2(g)PbCl2(s)     H(1) = -359.4 kJ(2)Mg(s) + Cl2(g)MgCl2(s)     H(2) = -641.3 kJcalculate the enthalpy change for the following reaction:(3) Pb(s) +... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.