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Whitepunk [10]
3 years ago
8

Consider the reaction below. How much heat is absorbed if 5.00 moles of nitrogen react

Chemistry
1 answer:
bekas [8.4K]3 years ago
3 0

Explanation:

The given chemical reaction is:

2 N_2 (g) + O_2(g) -> 2 N_20 (g)  delta Hrxn= +163.2 kJ

When two moles of nitrogen reacts with oxygen, it requires 163.2kJ of energy.

When 5.00 mol of nitrogen requires how much energy?

5.00 mol x \frac{163.2 kJ }{2 mol} \\=408 kJ

Hence, the answer is 408 kJ of heat energy is required.

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Write a balanced chemical equation for the incomplete combustion of gaseous ethane (C2H6). What is the sum of the coefficients i
Delicious77 [7]

Answer:

C2H6 +02 ===>Co2 + H20.

Explanation:

7 0
3 years ago
Is 2 KNO₃ + H₂CO₃ → K₂CO₃ + 4 HNO₃ a balanced equation
krok68 [10]

Hey there!

The elements in this equation are K, N, O, H, and C.

Let's count how many of each are on each side to see if it is balanced.

K: 2 on the left, 2 on the right.

<em>N: 2 on the left, 4 on the right. </em>

<em>O: 9 on the left, 6 on the right. </em>

<em>H: 2 on the left, 4 on the right. </em>

C: 1 on the left, 1 on the right.

Notice that there are different amounts of N, O, and H on the left side and the right side.

This means that the equation is not balanced.

Hope this helps!

6 0
3 years ago
The density of pure gold (Au) is 19.3 g/cm3. What is the mass of a block of gold that measures 1.2 cm x 4.00 cm x 3.20 cm? Pleas
N76 [4]

Answer:

296.448 g

Explanation:

Density:

we know that density of an object can be measured by dividing its mass to its volume.

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m= mass

V= volume

Given data:

volume= 1.2 cm x 4.00 cm x 3.20 cm =15.36 cm3

density=  19.3 g/cm3

mass=?

Now we will put the values in the formula,

d=m/v

d x V= m

m = 15.36 cm3 x 19.3 g/cm3

m=296.448 g

so the mass of block of gold is 296.448 g

8 0
3 years ago
Write the condense structural formula of the following compounds.
lozanna [386]

A condensed structural formula is a simple way of representing organic compounds.

The given organic compounds and condensed structural formula is presented below;

  • The condense structural formula of  alkene 2,7 Undecadiene  with molecular formula C₁₁H₂₀ is in the image uploaded.
  • The condense structural formula of 2,8 Nonene with the molecular formula C₉H₁₈ is in the image uploaded.
  • The condense structural formula of  5 Decyne with the molecular formula C₁₀H₁₈ is in the image uploaded.

Learn more about structural formula here: brainly.com/question/514499

3 0
3 years ago
WIl mark brainliest
liubo4ka [24]

Answer:

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed.

Explanation:

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed.

5 0
4 years ago
Read 2 more answers
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