2 years ago

(3.20x10^4)(0.2402) express your answer in appropriate significant figures.

Chemistry

1 answer:

yKpoI14uk [10]2 years ago

7 0

7686.4 is the awnser

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A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemic

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<span> POCl3 is the correct way to write the chemical formula for this compound</span>

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The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: c2h4 (g) + 3o2 (g) → 2co2 (g) + 2h2o

meriva

Answer:

$\boxed{-267.5}$

Explanation:

You can calculate the entropy change of a reaction by using the standard molar entropies of reactants and products.

The formula is

$\Delta_{r} S^{\circ} = \sum_n {nS_{\text{products}}^{\circ} - \sum_{m} {mS_{\text{reactants}}^{\circ}}}$

The equation for the reaction is

C₂H₄(g) + 3O₂(g) ⟶ 2CO₂(g) + 2H₂O(ℓ)

ΔS°/J·K⁻¹mol⁻¹ 219.5 205.0 213.6 69.9

$\Delta_{r} S^{\circ} = (2\times213.6 + 2\times69.9) - (1\times219.5 + 3\times205.0)\\\\= 567.0 - 834.5 = \boxed{-267.5 \text{ J}\cdot\text{K}^{-1} \text{mol}^{-1}}$

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3 years ago

When you do a displacement reaction with iron and copper what is the orange metal called

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It is called rust and it forms when water soaks into the metal forming a chemical reaction.

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3 years ago

The diagram below shows changes to the nucleus of an atom.

anzhelika [568]

Answer:

maybe 1 or 3 im not sure

Explanation:

i didn't study it yet sorry for not helping but try asking someone else

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2 years ago

Read 2 more answers

What mass of silver chloride can be produced from 1.73 l of a 0.147 m solution of silver nitrate?

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36.49 gm using law of equivalent proportion

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2 years ago