When 2,400 mg zinc is added to hydrochloric acid, 450 mL of hydrogen gas forms at a temperature of 30°C. What is the pressure of the gas (in atm)? ___Zn (s) + ___HCl (aq) → ___ZnCl2 (aq) + ___H2 (g)

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A: Yes after the addition of an HCl the calcium hydroxide will react with the acid and its concentratio...

Q: 1. Write the formulas for the six ions that are always soluble:

A: Formulas for the six ions that are always soluble: 

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A: Number of moles is calculated by dividing the given mass with molecular mass.

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Q: Gaseous ethane (CH;CH,) reacts with gaseous oxygen gas (02) to produce gaseous carbon dioxide (CO,) ...

A: Given that, mass of ethane= 13.2 g, molar mass=30 g mol-1 mass of oxygen=45.8 g, molar mass= 32 g mo...

Q: A mixture of helium and neon gas is expanded from a volume of 83.0 L to a volume of 87.0 L, while th...

A: Initial volume (V1)= 83.0 L Final volume (V2) = 87.0 L Pressure (P) = 64.0 atm  

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Q: luz luz (E) (E) (2E,4Z,6Z,8E)-deca-2,4,6,8-tetraen

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Q: pH

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Q: 1. Rank each set of three alcohols in terms of increasing acidity, "1" being least acidic, and "3" b...

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Q: A. acidic B. basic C. neutral

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Q: If K, for HCN is 6.2 x 10-10, what is K, for CN-? O 6.2 x 104 O none of these O 6.2 x 10-24 O 1.6 x ...

A: Given that,  For the acid HCN , Ka = 6.2×10-10 We need to find Kb for its conjugate base CN-  

Q: 1.) Given the reaction: PCl3(g) + Cl2(g) ⇌ PCl5(g) Kc = 24.3 Suppose the system at that particular t...

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Q: What volume of 0.812 M HCI, in milliliters, is required to titrate 1.45 g of NaOH to the equivalence...

A: Given: The concentration of HCl = 0.812 M The mass of NaOH = 1.45 g We have to calculate the volume ...

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A: Given to us  equilibrium N2O4 <====> 2NO2 Volume = 1.00 L  Intial moles of N2O4 = 0.04000 mol ...

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Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group H H ...

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Q: Step by step please. also have to answer A-D

A: For the reaction., MnO4-(aq) + 5 Fe2+(aq) + 8 H+(aq)---> Mn2+(aq) + 5 Fe3+(aq) + 4 H2O (l)

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Q: 3. Calculate the kg/cmol for Ca*2 (review the calculations from Lab 1). If a soil can retain 25 cmol...

A: Answer and explanation is given below hope you like it.

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A: A second order kinetics reaction are those reaction where the rate of reaction is dependent on the s...

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A: Details balanced equation is given below

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Q: lmine the rate law for the production of nitrosyl fluoride (NO,F) that occurs according to the follo...

A: We can find rate law by using rate of each run.

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Q: 3. Draw the electrochemical cell for the following reaction: Alo + OCI () +HOm → Cl) + OH( + AP*) a)...

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A: GIVEN:-

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Q: Why does the presence of solute in a solution lower its freezing point?

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.