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umka2103 [35]
3 years ago
6

Which of the following questions can be answered by science? (2 points) What makes a song sound beautiful? What is the meaning o

f life? What makes a painting beautiful? What are the effects of low pH in soil?
Chemistry
1 answer:
34kurt3 years ago
5 0

Answer:

D

Explanation:

Its the only answer that actually makes sense and i got it right on the quiz.

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Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
CaHeK987 [17]

Answer:

Fe(CN)₂,  FeCO₃,  Pb(CN)₄,  Pb(CO₃)₂

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) Fe(CN)₂
-----> Fe²⁺ and CN⁻

-----> +2 + (-1) + (-1) = 0

2.) FeCO₃

-----> Fe²⁺ and CO₃²⁻

-----> +2 + (-2) = 0

3.)  Pb(CN)₄

-----> Pb⁴⁺ and CN⁻

-----> +4 + (-1) + (-1) + (-1) + (-1) = 0

4.) Pb(CO₃)₂

-----> Pb⁴⁺ and CO₃²⁻

-----> +4 +(-2) + (-2) = 0

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2 years ago
What is 316 Kelvin in Celsius ?
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Answer:

42.85 Celsius

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What effects do catalysts have on chemical reactions?
cupoosta [38]

Answer:

3

Explanation:

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Give the name of reaction in the<br> preparation of alkene from alcohol<br> compounds.
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Dehydration to alkenes!

3 0
3 years ago
Which of the following best describes atoms with high electronegativity?
IceJOKER [234]
They trend to lose elections and become anions
3 0
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