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ivanzaharov [21]
3 years ago
8

GUYS I REALLY REALLY NEED HELP WITH THIS ONE QUESTION ON SCIENCE GIVING BRAINLIEST

Chemistry
1 answer:
Over [174]3 years ago
3 0

Answer:

I think it might be A or  D

Explanation:

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Predict the molar volume of hydrochloric acid required to produce 55 mol of hydrogen gas at STP. A) 0.045 mol/L B) 3.7 M C) 8.9
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A) 0.045 mol/L

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The process in which a substance changes from a gaseous state to the liquid state is
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First question is D, condensation
Second is B, convection
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How does the body maintain the equilibrium between oxygen and hemoglobin at high altitudes?
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5 0
3 years ago
Write the net ionic equation for this reaction occurring in water: ammonium fluoride and magnesium chloride are mixed to form ma
MAXImum [283]

Correct answer: 3. Mg^{2+}(aq) + 2 F^{-}(aq) --> MgF_{2}(s)

The given chemical reaction is between ammonium fluoride and magnesium chloride to form magnesium fluoride and ammonium chloride.

The balanced chemical equation representing the reaction will be,

2NH_{4}F (aq) + MgCl_{2}(aq) -->MgF_{2} (s) + 2NH_{4}Cl (aq)

The complete ionic equation for the reaction: All the compounds soluble in water (aqueous) will split into ions, MgF_{2} will not split into ions as it is insoluble in water.

2 NH_{4}^{+}(aq) + 2 F^{-}(aq) + Mg^{2+}(aq) + 2 Cl^{-}(aq) --> MgF_{2}(s) + 2 NH_{4}^{+}(aq) + 2 Cl^{-}(aq)

The net ionic equation will be:

Mg^{2+}(aq) + 2 F^{-}(aq) --> MgF_{2}(s)

Here the spectator ions are NH_{4}^{+} and Cl^{-}


6 0
3 years ago
Clasifica cada uno de los siguientes incisos como sustancia pura (elemento y compuesto) o mezcla (homogénea y heterogénea). Expl
SCORPION-xisa [38]

Answer:

Ver explicacion

Explanation:

Un arroz con leche es una mezcla heterogénea porque está compuesto por partículas sólidas de diferentes tipos y tamaños.

El agua de mar es una mezcla homogénea de sustancias todas en la misma fase.

El magnesio es una sustancia pura y es un elemento.

La gasolina es una mezcla homogénea de sustancias comúnmente utilizadas como combustible.

4 0
3 years ago
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