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3 years ago

Which of the following is a form of stored energy?

Chemistry

2 answers:

skad [1K]3 years ago

6 0

Answer:

option d

Explanation:

chemical potential energy

Doss [256]3 years ago

6 0

Answer:

Explanation:

Chemical potential energy is a form of stored energy. It is the potential energy between the chemical bonds of a substance.

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A student makes a sound by blowing into the mouth of an empty soda bottle. How could the student make the sound louder?

Alja [10]

Answer:

Increase the amplitude by blowing with more force.

Explanation: I answered this.

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3 years ago

Which processes are part of the fast carbon cycle?

SVETLANKA909090 [29]

Answer:

B) Transportation and photosynthesis

C) Cellular respiration and photosynthesis

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3 years ago

How many protons neutrons and electrons does nitrogen 14 have?

vazorg [7]

Many nitrogen atoms have seven neutrons<span> (14-7 = 7). Some atoms of nitrogen, however, have eight electrons. They are atoms of N-15, an isotope of nitrogen. In a neutral atom, the number of protons must equal the number of electrons.</span>

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3 years ago

How many moles of Al would be produced from 20 moles of Al2O3?<br> 2Al2O3<br> -><br> 4A1 + 302

Evgesh-ka [11]

<h3>Answer:</h3>

$\displaystyle 40 \ mol \ Al$

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 2Al₂O₃ → 4Al + 3O₂

[Given] 20 mol Al₂O₃

<u>Step 2: Identify Conversions</u>

[RxN] 2 mol Al₂O₃ → 4 mol Al

<u>Step 3: Stoich</u>

[DA] Set up: $\displaystyle 20 \ mol \ Al_2O_3(\frac{4 \ mol \ Al}{2 \ mol \ Al_2O_3})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 40 \ mol \ Al$

<u>Step 4:Check</u>

<em>Follow sig fig rules and round. We are given 1 sig fig.</em>

Since our final answer already has 1 sig fig, there is no need to round.

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3 years ago

How can Newton's Third Law of Motion be used to explain why it is difficult to walk on a slippery surface, such as ice?

Olenka [21]

E ground pushes you forward. But that interaction is friction. Reduce friction and it doesn't matter how strong your legs are, the surface is incapable of pushing you accordingly. The coefficient of static friction is very low so it is easy to slide your foot rather than push.

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3 years ago