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3 years ago

Which gas is produced when Mg(s) is added to HCl(aq)?O2H2Cl2CO2

Chemistry

2 answers:

Rainbow [258]3 years ago

7 0

The gas produced when the two combine is h2

g100num [7]3 years ago

4 0

Answer: $H_2$ or Hydrogen

Explanation:-

$Mg(s)+2HCl(aq)\rightarrow MgCl_2(aq)+H_2(g)$

This is a single replacement reaction in which magnesium replaces hydrogen from its aqueous solution. As magnesium is more reactive than hydrogen , it easily loses electrons to convert to $Mg^{2+}$ in $MgCl_2$ and $H^+$ in $HCl$ accepts electrons to form $H_2$ .

Thus magnesium when dropped into an aqueous solution of $HCl$ releases hydrogen gas.

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Im hvaing a hard time getting the right answer

Tanya [424]

Answer:

$V=23.9mL$

Explanation:

Hello!

In this case for the solution you are given, we first use the mass to compute the moles of CuNO3:

$n=2.49g*\frac{1mol}{125.55 g}=0.0198mol$

Next, knowing that the molarity has units of moles over liters, we can solve for volume as follows:

$M=\frac{n}{V}\\\\V=\frac{n}{M}$

By plugging in the moles and molarity, we obtain:

$V=\frac{0.0198mol}{0.830mol/L}=0.0239L$

Which in mL is:

$V=0.0239L*\frac{1000mL}{1L}\\\\V=23.9mL$

Best regards!

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Arada [10]

Answer:

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Explanation:

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