03/22/21

question for chemistry

What is the temperature in degrees Celsius of a 0.7 mol sample of argon gas that occupies 3.6 L at a pressure of 1163.9 kPa?
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03/22/21

question for chemistry
How many moles of carbon dioxide gas are in a 1.19 L sample that is at standard pressure and 240 K.
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03/22/21

A structure with a more stable conjugate base will be more acidic. Ha is more acidic than Hb. Choose the factor that best explains the increased stability of the first structure's conjugate base.
A structure with a more stable conjugate base will be more acidic. Ha is more acidic than Hb. Choose the factor that best explains the increased stability of the first structure's conjugate base.
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03/20/21

Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by P.
Charge: -3And I got 1s22s22p63s23p3 for the ground-state electron configuration, but it is incorrect. What does ground state configuration mean?
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03/19/21

Stoichiometry Map
2ZnS + 3O2 —> 2ZnO + 2SO2
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03/18/21

The temperature of 23.984 L of C3H8 is changed from 367.63 K to 897.86 K. What is the new volume of the gas in liters?
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03/18/21

How could this experiment be used to find the molecular mass of an unknown gas?
1.Obtain a length of glass tubing. Make sure it is completely dry. Lay the tubing on your bench. 2. Place one stopper with a cotton swab in each end of the tubing. Using a crayon, mark the glass to... more
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03/18/21

How many particles of Ne are present in 537 L of Ne?

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03/18/21

Determine the % for sucrose, C12H22O11, more commonly known as table sugar.
Find % composition of sucrose
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03/18/21

How many grams of iron(iii) sulfate are produced when 0.23 moles of iron(iii) oxide is reacted with an excess of sulfuric acid

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03/18/21

Which ions are most abundant in a Weak base?
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03/17/21

What is the electron domain geometry and molecular polarity of H2O? Explain with a diagram.
Please show the steps fully
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03/17/21

5.000ml of 0.200M Fe(NO3)3 combined with 4.000ml of 0.00200M NaSCN in a 50.00ml volumetric flask filled with water. What is the diluted concentration for the SCN- ion, after the solution is made
5.000 ml of 0.200 M Fe(NO3)3 is combined with 4.000 ml of 0.00200M NaSCN in a 50.00 ml volumetric flask . The flask is then filled to the mark with water. What is the diluted concentration for the... more
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03/11/21

Calculate ΔS° for each of the following reactions.
a) 2HNO3(l) + 3H2S(g) --> 4H2O(l) + 2NO(g) + 3S(s)b) PCl5(g) + 4H2O(l) --> 5Cl-(aq) + H2PO4-(aq) + 6H+(aq)c) MnO4-(aq) + 3Fe2+(aq) + 4H+(aq) --> 3Fe3+(aq) + MnO2(s) + 2H2O(l)
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02/22/21

A solution is made initially with 0.200 M HIO₃ (Kc = 0.170). Once the equilibrium below is established, what is the equilibrium concentration of H⁺ ions? HIO₃ (aq) ⇌ H+ (aq) + IO₃⁻ (aq)
A solution is made initially with 0.200 M HIO₃ (Kc = 0.170). Once the equilibrium below is established, what is the equilibrium concentration of H⁺ ions? HIO₃ (aq) ⇌ H+ (aq) + IO₃⁻ (aq)
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02/21/21

For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 3.1 M/s?
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02/21/21

A student needs to prepare 250mL of a 0.200M aqueous solution of sucrose, C12H22O11 (aq), which is used frequently in biological experiments. what is the value of x?
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02/21/21

If 8.45g of CuNO3 is dissolved in water to make a 0.290M solution, what is the volume of the solution in milliliters?

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02/21/21

General Biology
you need to make a solution of NaOH in the lab. You decide to make your solution with 12 g of NaOH in 900 ml of water. You find your solution to have a pH of 10.00, what is the molarity of the... more
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02/21/21

Consider the following equilibrium at 461.9 K: NH4HS(s) ⇆ NH3(g) + H2S(g) The partial pressure of each gas is 0.287 atm. Calculate KP and Kc for the reaction.

The answer should be in scientific notation.
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02/21/21

Ammonia equation help!
N2(g) + 3H2(g) → 2NH3(g), if you have 3.64 g of H2, how many grams of NH3 can be produced?
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02/21/21

question in the description. please help

42g/mol C2H6   32g/mol O2 44g/mol CO2 18g/mol H2O2 C2H6 + 7 O2 → 4 CO2 + 6 H2O201.6 g C2H6 reacts with 400.0g O2 to make water.. What is the theoretical yield of H2O based on the above reactant... more
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02/20/21

Arrhenius Equation Calculations
The activation energy for the gas phase isomerization of cis-1,2-diphenylethene is 179 kJ.cis-C6H5CH=CHC6H5trans-C6H5CH=CHC6H5The rate constant at 586 K is 6.55×10-4 /s. The rate constant will... more
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02/11/21

Chemistry Homework
1.6 mol Zn and 7.6 mol HCl react according to the equation Zn + 2 HCl −→ ZnCl2 + H2 . If the limiting reactant is Zn, calculate the amount of ZnCl2 formed. Answer in units of mol.
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02/11/21

Determine the standard potential for each cell and identify the reactions as spontaneous or nonspontaneous as written. Cd(s) + 2NO-3 (aq) + 4H+(aq) → Cd2+(aq) + 2NO2(g) + 2H2O(l)|
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