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kap26 [50]
3 years ago
13

Mario believes he has found the reason that some things glow in the dark while others do not. What is the most important thing h

e will need to do before his theory will be accepted by other scientists?
A. Create a petition and ask everyone who believes in his theory to sign it.

B. Develop an on-line survey so people can vote on the accuracy of his theory.

C. Write a book promoting his theory.

D. Develop tests and experiments that can be repeated to prove his theory.
Chemistry
2 answers:
Advocard [28]3 years ago
6 0

It’s D. velocity test and experiment that can be repeated to prove his theory

Citrus2011 [14]3 years ago
4 0

the answer is d, cuz i just did it rn on my study island and i got it right :)

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The diagram below shows the energy conversions of the Krebs cycle, which is part of cellular respiration. The U-shaped
Jobisdone [24]
The answer to your problem is B
8 0
3 years ago
Read 2 more answers
Calculate ΔG o for the following reaction at 25°C: 3Mg(s) + 2Al3+(aq) ⇌ 3Mg2+(aq) + 2Al(s) Enter your answer in scientific notat
larisa [96]

Answer:

-3.7771 × 10² kJ/mol

Explanation:

Let's consider the following equation.

3 Mg(s) + 2 Al³⁺(aq) ⇌ 3 Mg²⁺(aq) + 2 Al(s)

We can calculate the standard Gibbs free energy (ΔG°) using the following expression.

ΔG° = ∑np . ΔG°f(p) - ∑nr . ΔG°f(r)

where,

n: moles

ΔG°f(): standard Gibbs free energy of formation

p: products

r: reactants

ΔG° = 3 mol × ΔG°f(Mg²⁺(aq)) + 2 mol × ΔG°f(Al(s)) - 3 mol × ΔG°f(Mg(s)) - 2 mol × ΔG°f(Al³⁺(aq))

ΔG° = 3 mol × (-456.35 kJ/mol) + 2 mol × 0 kJ/mol - 3 mol × 0 kJ/mol - 2 mol × (-495.67 kJ/mol)

ΔG° = -377.71 kJ = -3.7771 × 10² kJ

This is the standard Gibbs free energy per mole of reaction.

5 0
3 years ago
Although not usually soluble in plain water, an amphoteric oxide or hydroxide is: 1. soluble in neutral solutions. 2. soluble in
Aleksandr [31]

Answer:

The correct option is: 4. soluble in both acidic and basic solutions

Explanation:

Oxide is a chemical compound formed by an element with oxygen. In such compounds, the oxygen is generally present in the -2 oxidation state.

Whereas, hydroxide is a chemical compound formed by an element with hydroxyl group (-OH).

<em>Oxides and hydroxides of some elements are </em><em>amphoteric</em><em> in nature.</em> <u><em>Such compounds can behave as an acid in basic medium and behave as a base in acidic medium.</em></u>

<u>Therefore, amphoteric oxides and hydroxides are soluble in both acidic and basic solutions.</u>

5 0
3 years ago
Outline the two main observations that led Wegener to propose the theory of continental drift. (in ur own words)
Reil [10]

Answer:

Due to the known fact that certain animal ect lived on certain country/continents due to climate water type ect when fossils of various animal where found in unusual parts of the earth the theory came that all the continent where joined together due to fossil and rock types being found on continents in which would be impossible to reach if not joined together in the beginning

Explanation:

I

3 0
3 years ago
Problems: Upload your work for all 5 questions when you are on the last question.
elena-14-01-66 [18.8K]

Answer:

1.08 M

Explanation:

6 0
3 years ago
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