Write your question here (Keep it simple and clear to get the best answer) calculate the atomic weight of a metal when 125ml of of a 0.2 M HCl reacts with 0.304g of the metal using the eqn M +2HCLMCL2+H2

The answer to your question is 24.32 g

Explanation:

Data

Atomic weight = ?

HCl volume = 125 ml

Molarity = 0.2

mass of metal = 0.304 g

Balanced chemical equation

                       M + 2HCl   ⇒  MCl₂  +  H₂

Process

1.- Calculate the moles of HCl

Molarity = moles / volume (L)

- Solve for moles

  moles = Molarity  x volume

  moles = 0.2 x 0.125

             = 0.025

2.- Calculate the moles of the Metal

                1 mol of M 2 moles of HCl

                x                 0.025 moles of HCl

                x = (0.025 x 1) / 2

                x = 0.0125 moles of HCl

3.- Calculate the atomic weight of the metal

                atomic weight 1 mol

               0.304 g             0.0125 moles

               Atomic weight = (1 x 0.304) / 0.0125

               Atomic weight = 24.32 g    

The molar mass of the metal is 24.32 g/mol (Magnesium)

Explanation:

Step 1: Data given

volume of a 0.2 M HCl = 125 mL = 0.125 L

Mass of the metal = 0.304 grams

Step 2: The balanced equation

M + 2HCL ⇔ MCL2+ H2

Step 3: Calculate moles of HCl

Moles HCl = molarity * volume

Moles HCl = 0.2 M * 0.125 L

Moles HCl = 0.025 moles

Step 4: Calculate moles M

For 1 mol M we need 2 moles HCl to produce 1 mol MCl2 and 1 mol H2

For 0.025 moles HCl we have 0.025/2 = 0.0125 moles M

Step 5: Calculate molar mass M

Molar mass M = mass M / moles M

Molar mass M = 0.304 grams / 0.0125 moles

Molar mass M = 24.32 g/mol

The molar mass of the metal is 24.32 g/mol (Magnesium)

when—without warning—something provokes your anger, you may struggle not to succumb to it. since what typically makes you mad is feeling powerless in the face of what seems unfair, your anger is mostly an attempt at a “quick fix” to right the balance. it’s as though you’re raising a fist in protest, proclaiming that you’re not going to capitulate to such injustice.

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explanation: