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Lena [83]
3 years ago
10

In the equation:

Chemistry
2 answers:
Sliva [168]3 years ago
6 0
3 MgCl₂ + 1 Na₃P = 1 Mg₃P₂ + 6 NaCl<span>


Mg</span>₃Cl₂ = <span>Magnesium Phosphide
</span>
NaCl = Sodium <span>chloride

hope this helps!</span>
jek_recluse [69]3 years ago
3 0

Answer:

3 MgCl₂ + 1 Na₃P = 1 Mg₃P₂ + 6 NaCl

Explanation:

For MgCl2 + Na3P reagents to be used in a chemical reaction that forms NaCl, a balanced equation must be established. In this case, the equation will be:

3 MgCl₂ + 1 Na₃P = 1 Mg₃P₂ + 6 NaCl

Balancing a chemical equation means getting the stoichiometric coefficients right (the smallest positive integers that appear before the substances in the equations) so that the number of atoms of each element is equal on both sides of the equation, that is, the reactants (first member) and on products (second member).

This is important primarily because, as Lavoisier's law of conservation of masses says, "In a chemical reaction done in a sealed container, the sum of the reactant masses is equal to the sum of the product masses." This means that the atoms of the elements in the reactions do not appear out of nowhere, nor are they destroyed. But in fact, these atoms undergo a rearrangement, "shifting positions," as it were, because their previous bonds are undone and new chemical bonds are formed that give rise to the products.

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Vlad [161]

Explanation:

a) The amount of heat released by coffee will be absorbed by aluminium spoon.

Thus, heat_{absorbed}=heat_{released}

To calculate the amount of heat released or absorbed, we use the equation:  

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Also,

m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]    ..........(1)

where,

q = heat absorbed or released

m_1 = mass of aluminium = 45 g

m_2 = mass of coffee = 180 g

T_{final} = final temperature = ?

T_1 = temperature of aluminium = 24^oC

T_2 = temperature of coffee = 85^oC

c_1 = specific heat of aluminium = 0.80J/g^oC

c_2 = specific heat of coffee= 4.186 J/g^oC

Putting all the values in equation 1, we get:

45 g\times 0.80J/g^oC\times (T_{final}-24^oC)=-[180 g\times 4.186J/g^oC\times (T_{final}-83^oC)]

T_{final}=80.30^oC

80.30 °C is the final temperature.

b) Energy flows from higher temperature to lower temperature.Whenever two bodies with different energies and temperature come in contact. And the resulting temperature of both bodies will less then the body with high temperature and will be more then the body with lower temperature.

So, is our final temperature of both aluminium and coffee that is 80°C less than initial temperature of coffee and more than the initial temperature of the aluminum.

8 0
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Answer:

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Explanation:

The equilibrium constant expression for a reaction is products over reactants. Since NO₂ has a coefficient of 2, it will become an exponent.

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[NO₂]²/[N₂O₄]

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Answer:

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