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bixtya [17]
2 years ago
8

The equation below shows the decomposition of lead nitrate. How many molecules of PbO are produced when 11.5 g NO2 is formed?

Chemistry
1 answer:
Nadusha1986 [10]2 years ago
8 0
Answer is in the file below

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Calculate the enthalpy of reaction for 2CO + O2 → 2CO2. given the following bond energies:
kotegsom [21]

Answer : The enthalpy change for the reaction is 1043 kJ/mol.

Explanation :

The given chemical reaction is:

2CO+O_2\rightarrow 2CO_2

As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

\Delta H=[(2\times B.E_{C\equiv O})+(1\times B.E_{O\equiv O})]-[2\times B.E_{C=O}]

Given:

B.E_{C\equiv O} = 1074 kJ/mol

B.E_{O\equiv O} = 499 kJ/mol

B.E_{C=O} = 802 kJ/mol

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

\Delta H=[(2\times 1074kJ/mol)+(1\times 499kJ/mol)]-[2\times 802kJ/mol]

\Delta H=1043kJ/mol

Therefore, the enthalpy change for the reaction is 1043 kJ/mol.

7 0
3 years ago
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Rus_ich [418]

Answer:

Tundra

Explanation:

In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons.

5 0
3 years ago
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How does the polarity of water give it this solvent property
mafiozo [28]

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being polar, it can easily dissolve other polar substances or substances with ionic bonds like nacl

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A 3.20-mol sample of gas occupies a volume of 350. mL at 300.0 K. Determine the
nalin [4]

Answer:

P \approx 225atm

Explanation:

From the question we are told that:

Moles of sample n=3.20_mol

Volume V=350mL

Temperature T=300k

Generally the equation for ideal gas is mathematically given by

 PV=nRT

 P=\frac{nRT}{V}

 P=\frac{3.20*0.08206*300}{350*10^{-3}}

 P=225.079atm

 P \approx 225atm

4 0
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How does a changing environment affect plant and animals threat live there
klio [65]

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Changing the environment takes away habitats from animals and some nutrients plants need

Hope this helps :>

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