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Mama L [17]
2 years ago
7

50 POINTS! PLS HELP!

Chemistry
1 answer:
Jobisdone [24]2 years ago
3 0

Answer:

please where is the Gibb free energy to indicate if its exothermic or endothermic reaction but the chemical equation is homogeneous one.

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Consider this reaction 2Mg(s)+O2(g) ———> 2MgO(s) What volume (in milliners) of gas is required to react with 4.03 g Mg at STP
nydimaria [60]

The volume of a gas that is required  yo react with 4.03 g mg  at STP  is 1856 ml



calculation/

  • calculate the moles of Mg used

     moles=mass/molar mass

moles of Mg is therefore=4.03 g/  24.3 g/mol=0.1658  moles

  • by use of mole ratio of Mg:O2  from  the equation  which is 2:1

  the moles 02=0.1679 x1/20.0829 moles

  • at STP  1 mole of a gas= 22.4  l

                            0.0895 moles=? L

  • by cross multiplication
  • =0.0895 moles  x22.4 l/  1 mole=1.8570 L

into Ml = 1.8570 x1000=1856  ml  approximately to 1860

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3 years ago
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2 years ago
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Which type of equilibrium exists in a sealed flask containing Br2(ℓ) and Br2(g) at 298 K and 1.0 atm?(1) static phase equilibriu
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The correct answer is 3.

A dynamic phase equilibrium is when a reversible reaction no longer changes its ratio of reactants to products. However, substances continue to move between the chemicals at an equal rate, which means the net change is 0. This is known as a steady state.
8 0
3 years ago
A radical is a reactive intermediate with a single ____________ electron, formed by ____________ of a covalent bond. Allylic rad
Marina86 [1]

1. A radical is a reactive intermediate with a single ____________ electron, formed by ____________ of a covalent bond.

1. A: Unpaired, and homolysis

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2. A: Resonance, and more

3. A compound that contains an especially weak bond that serves as a source of radicals is called a radical ____________ .

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4. A: Allylic substitution by radical

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3 years ago
How many hydrogen atoms Is needed for C5H8 to become saturated
tatiyna

Answer:

4 hydrogen atoms are needed to C5H8 to saturate it

Explanation: because C5H8 is an alkyne that contains a triple bond or alkene with 2 double bonds.

2 hydrogen atoms are needed to saturate one double bond and 4 hydrogen atoms are needed to fully Saturate a triple bond or two double bonds.

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