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gavmur [86]
4 years ago
13

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

Chemistry
2 answers:
Rainbow [258]4 years ago
7 0
The gas produced when the two combine is h2
g100num [7]4 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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What is the percent mass of nitrogen in trinitrogen pentoxide
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Answer:

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Which block on the periodic table contains the actinide series of elements?
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4 0
4 years ago
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7 0
4 years ago
How much heat is released if 7.15 g cao(s) is added to 152 g of h2o(l)? cao(s) + h2o(l) → ca(oh)2(s) δh°rxn = –64.8 kj/mol?
aniked [119]
First, we calculate the number of moles of each reactant using the formula:

Moles = mass / molecular weight

CaO:
Moles = 7.15/56 = 0.128 

Water:
Moles = 152/18 = 8.44

The reaction equation shows that the reactants must be present in an equal number of moles, so CaO will be the limiting reactant and 0.128 mole of calcium hydroxide will form.

The energy released is given by:

Heat of reaction * number of moles
= -64.8 * 0.128
= -8.29 kJ

8.29 kJ of energy will be released
6 0
4 years ago
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