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Kamila [148]
3 years ago
13

*WILL GIVE BRAINLIEST IF SOMEONE ANSWERS THIS CORRECTLY ASAP!!!!*

Chemistry
2 answers:
My name is Ann [436]3 years ago
8 0

D. The final substance in Beaker A is a mixture and in Beaker B is a pure substance.

kvasek [131]3 years ago
3 0

Answer:

substance a is a pure substance. substance b is a mixture

Explanation:

The previous answer is incorrect

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Why is Galileo Galilei impotant?
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He provided a number of scientific insights that laid the foundation for future scientists. He also improved telescope that helped further the understanding of the world and universe.

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Read 2 more answers
The following thermochemical equation is for the reaction of Fe 3 O 4 (s) with hydrogen (g) to form iron and water vapor Fe 3 O
Mila [183]

Answer:

41.3kJ of heat is absorbed

Explanation:

Based in the reaction:

Fe₃O₄(s) + 4H₂(g) → 3Fe(s) + 4H₂O(g) ΔH = 151kJ

<em>1 mole of Fe3O4 reacts with 4 moles of H₂, 151kJ are absorbed.</em>

63.4g of Fe₃O₄ (Molar mass: 231.533g/mol) are:

63.4g Fe₃O₄ × (1mol / 231.533g) = <em>0.274moles of Fe₃O₄</em>

These are the moles of Fe₃O₄ that react. As 1 mole of Fe₃O₄ in reaction absorb 151kJ, 0.274moles absorb:

0.274moles of Fe₃O₄ × (151kJ / 1 mole Fe₃O₄) =

<h3>41.3kJ of heat is absorbed</h3>

<em />

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What must happen in a chemical reaction?
klasskru [66]
The anwser is atoms are destroyed
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What is the formula of calculating density?
Salsk061 [2.6K]

density = mass/volume

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