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IgorC [24]
3 years ago
6

Given the balanced equation representing a reaction:

Chemistry
2 answers:
luda_lava [24]3 years ago
8 0
(1) synthesis is the answer because only one product is formed~
Licemer1 [7]3 years ago
4 0

Answer : The correct option is, (1) synthesis

Explanation :

Synthesis reaction : A type of chemical reaction in which multiple reactants combine to form a single product.

It is represented as,

X+Y\rightarrow XY

Decomposition reaction : A type of chemical reaction in which a single reactant decomposes into two or more products.

It is represented as,

XY\rightarrow X+Y

Single replacement reaction : A type of chemical reaction where the more reactive element replace the less reactive element.

It is represented as,

A+BC\rightarrow AC+B

(A is more reactive element and B is less reactive element)

Double replacement reaction : A type of chemical reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.

It is represented as,

AB+CD\rightarrow AD+CB

(A and C are the cations, B and D are the anions)

The given balanced reaction is,

6Li+N_2\rightarrow 2Li_3N

The given reaction is an example of synthesis reaction in which lithium combine with the nitrogen to form a single product as lithium nitride.

Hence, the correct option is, (1) synthesis reaction

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You mix 200. mL of 0.400M HCl with 200. mL of 0.400M NaOH in a coffee cup calorimeter. The temperature of the solution goes from
GuDViN [60]

Answer : The enthalpy of neutralization is, 56.012 kJ/mole

Explanation :

First we have to calculate the moles of HCl and NaOH.

\text{Moles of HCl}=\text{Concentration of HCl}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol

\text{Moles of NaOH}=\text{Concentration of NaOH}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol

The balanced chemical reaction will be,

HCl+NaOH\rightarrow NaCl+H_2O

From the balanced reaction we conclude that,

As, 1 mole of HCl neutralizes by 1 mole of NaOH

So, 0.08 mole of HCl neutralizes by 0.08 mole of NaOH

Thus, the number of neutralized moles = 0.08 mole

Now we have to calculate the mass of water.

As we know that the density of water is 1 g/ml. So, the mass of water will be:

The volume of water = 200mL+200L=400mL

\text{Mass of water}=\text{Density of water}\times \text{Volume of water}=1g/ml\times 400mL=400g

Now we have to calculate the heat absorbed during the reaction.

q=m\times c\times (T_{final}-T_{initial})

where,

q = heat absorbed = ?

c = specific heat of water = 4.18J/g^oC

m = mass of water = 400 g

T_{final} = final temperature of water = 27.78^oC=273+25.10=300.78K

T_{initial} = initial temperature of metal = 25.10^oC=273+27.78=298.1K

Now put all the given values in the above formula, we get:

q=400g\times 4.18J/g^oC\times (300.78-298.1)K

q=4480.96J

Thus, the heat released during the neutralization = -4480.96 J

Now we have to calculate the enthalpy of neutralization.

\Delta H=\frac{q}{n}

where,

\Delta H = enthalpy of neutralization = ?

q = heat released = -4480.96 J

n = number of moles used in neutralization = 0.08 mole

\Delta H=\frac{-4480.96J}{0.08mole}=-56012J/mole=-56.012kJ/mol

The negative sign indicate the heat released during the reaction.

Therefore, the enthalpy of neutralization is, 56.012 kJ/mole

8 0
3 years ago
How do I round 10.25 to only 3 significant digits
Lady_Fox [76]
10.3 is good the correct rounding of three sig figures

3 0
4 years ago
Identify how many of the original parent nuclei remain after three half-lives
Nutka1998 [239]

Answer:

yes

Explanation:

i did the test

3 0
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Where is the energy in a glucose molecule stored
MAXImum [283]

Answer:

its stored in the covalent bonds

4 0
3 years ago
4. Define power and explain how to determine power.
Ratling [72]
The rate of doing work is called power of an object.
It is also defined as the work done by an object per unit time. Mathematically, its formula is given by :
, W is work done and t is time taken.
The SI unit of power is watts and its commercial unit is kWh.
1 watt = J/s or N-m/s.
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