12/09/19

What is the subshell corresponding to the following sets of quantum numbers? An example of how to write your answer is 2s.
n= 2, l=1 n=2, l=0
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12/08/19

Chemistry question

1a. Consider the following reaction:2HBr(aq)+Sr(OH)2(aq) → 2H2O(l)+SrBr2(aq)Enter the complete ionic equation for this reaction.Express your answer as a complete ionic equation. Identify all of the... more
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12/05/19

How many molecules are there in a sample of an ideal gas with a volume of 1.66 L at STP?
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12/03/19

Calculate the solubility

Calculate the solubility (in mol/L) of Co(OH)3 (Ksp = 3 ✕ 10−43) in each of the following. (Assume that all solutions are at 25°C. Enter unrounded values.) (a) water (assume pH is 7.0 and constant)... more
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12/01/19

How many grams of calcium hydroxide are needed to neutralize 25 ml of 0.100 m hno3?
Please help very urgent
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12/01/19

What is the molecular geometry shape and hybridization central atom for PF5, ClF3, CO2-3, SF-5, I-3?
How to find the molecular geometry shape and what are they to see if I got it correct as well as the hybridization of the central atom. Clear answer to all of them and what are the answers. I need... more
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11/25/19

Dipole-dipole Question
Would an atom of argon be most strongly attracted to another atom of argon, an atom of neon, or an atom of krypton?
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11/19/19

Rate of Reactions
Kinetics is the study of how the amount (concentration) of any one of the reactants or products changes with time. When pieces of a metal (M) were placed in solutions of hydrochloric acid, the... more
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11/17/19

Determining the pi bonds in SOCl2
The double bond in SOCl2 is comprised of a σ(sp3-sp2) bond and a π(3d-2p) bond. How do we know that it's a 3d and a 2p orbital that is left over to make a pi bond?
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11/14/19

Thermochemistry

Write the thermochemical equation that would be used to represent the standard heat of formation of KBr(s). AND Determine ∆Hf°
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11/13/19

Need help with this question
According to molecular orbital theory, what is an antibonding orbital?
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11/03/19

ClO4- and ClO3-
why does ClO3- have a smaller bond angle then ClO4-
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11/02/19

Confusing Chemistry Math Question

The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.7 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
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11/02/19

Chemistry Solubility Math Question 5
A solution contains 0.14 M Pb(NO3)2 and 0.02 M AgNO3. As solid KI is slowly added to the solution, one of the metal iodides begins to precipitate. What is the concentration of Ag+(aq) remaining in... more
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11/01/19

2 HI (g) ⇌ H₂ (g) + I₂ (g) At equilibrium, the partial pressure of HI is 1.9 atm and the partial pressures of H₂ and I₂ are 7.9 and 2.3 respectively. What is Kp for this equilibrium?
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10/29/19

Write the dissolution equation for both salts.

Write the dissolution equation for both salts. these are the slats that I used 1 Potassium Acetate2 Sodium Nitrate
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10/29/19

A single electron in an orbital has quantum numbers n = 3, ℓ = 1, mℓ = 0, ms =-½. Which of the following is an acceptable set of quantum numbers for the next electron added to this orbital?
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10/27/19

Calculate the work done on or by the system on 5.25 mol of liquid H2O vaporizes in J. Calculate the water s change in internal energy in kJ.?
The vaporization of 1 mole of liquid water (the system) at 100.9°C, 1.00 atm, is endothermic.H2​O (l) + 40.7 kJ ---> H2​O (g)Assume that at exactly 100.0°C and 1.00 atm total pressure, 1.00... more
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10/17/19

What volume of 0.200 M HCl is required to neutralize 50.0 mL of 0.800 M NaOH?
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10/17/19

A 15.0 mL solution of Sr(OH)₂ is neutralized with 34.0 mL of 0.350 M HCl. What is the concentration of the original Sr(OH)₂ solution?
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10/09/19

kJ of heat released
In a popular television series, the two characters use thermite to assist with breaking into a chemical storage facility because the reaction between aluminum and iron(III) oxide... more
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10/09/19

A sample of propane, C3H8, contains 14.0 moles of carbon atoms. How many total moles of atoms does the sample contain?
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10/07/19

Chemistry Help Needed
If I have 15 grams of C2H4, 10 grams of O2, and 20 grams of CO2, how many grams of H2O do I have?
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10/07/19

Write the net ionic equation for the reaction shown. Include physical states.
2HNO3(aq)+Sr(OH)2(aq)———>2H2O(I)+Sr(NO3)2(aq)net ionic equation:
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10/07/19

Complete and balance the molecular equation for the reaction of aqueous ammonium bromide, NH4BR and aqueous lead (II) acetate, Pb(C2H3O2)2. Include physical states.
Molecular equation:Enter the balance net ionic equation for this reaction. Include physical states.net ionic equation:
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