2 years ago

What kind of mixture is a solution? A suspension? A colloid?

Chemistry

1 answer:

kompoz [17]2 years ago

3 0

Solution = homogeneous mixture
Suspension = heterogeneous mixture
Colloid = homogeneous mixure

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Use the molar bond enthalpy data in the table to estimate the value of Δ∘rxn

MakcuM [25]

Answer:

ΔH°rxn = - 433.1 KJ/mol

Explanation:

CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)

⇒ ΔH°rxn = 4ΔH°HCl(g) + ΔH°CCl4(g) - 4ΔH°Cl2(g) - ΔH°CH4(g)

∴ ΔH°Cl2(g) = 0 KJ/mol.....pure element in its reference state

∴ ΔH°CCl4(g) = - 138.7 KJ/mol

∴ ΔH°HCl(g) = - 92.3 KJ/mol

∴ ΔH°CH4(g) = - 74.8 KJ/mol

⇒ ΔH°rxn = 4(- 92.3 KJ/mol) + (- 138.7 KJ/mol) - 4(0 KJ/mol) - (- 74.8 KJ/mol)

⇒ ΔH°rxn = - 369.2 KJ/mol - 138.7 KJ/mol - 0 KJ/mol + 74.8 KJ/mol

⇒ ΔH°rxn = - 433.1 KJ/mol

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Is the molecule SF4 polar or non polar?

krok68 [10]

S4 is polar molecule

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The formula C2H4 can be classified as

blsea [12.9K]

The formula C2H4 can be classified as both a molecular formula and an empirical formula. The answer is number 4.

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3 years ago

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Akio just got over having the flu. His brother just got the flu. His parents are not worried about Akio getting it again because

AleksandrR [38]

Answer:

active because he built up antibodies due to exposure to the flu

Explanation:

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What number of electrons balances the charges in this half reaction

Digiron [165]

Answer : Two electrons balances the charges in this half reaction.

Explanation :

The given half reaction is,

$SO_2+2H_2O\rightarrow SO^{2-}_4+4H^+$

In this half reaction, there is no charges present on the left side of the reaction but on right side of the reaction, (2+) charge is present. So, two electrons (2-) are added on the right side of the reaction for balances the charge of the half reaction.

The balanced half reaction is,

$SO_2+2H_2O\rightarrow SO^{2-}_4+4H^++2e^-$

Hence, two electrons balances the charges in this half reaction.

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2 years ago