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4 years ago

Who does not experience critical periods? humans animals both neither

Chemistry

2 answers:

Alexxx [7]4 years ago

7 0

Answer:

The correct answer is neither.

Explanation:

A critical period in developmental biology refers to a stage of maturation in the organism's lifespan during which the nervous system is mainly vulnerable to some kinds of environmental stimuli. If due to certain causes, the organism does not acquire the suitable stimulus at this critical period, to acquire a given trait or skill, it may become tough, eventually less successful, or even not possible, to attain some of the functions in the later stages of the life. The functions, which are essential for the survival of an organism, like vision, are mainly likely to form at these critical periods.

Rashid [163]4 years ago

4 0

I would go with neither

Hope this helps

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Combustion analysis is performed on 0.50 g of a hydrocarbon, and 1.47 g of CO2 and 0.902 g of H2O are produced. What is the empi

JulijaS [17]

1. The empirical formula of the hydrocarbon is CH₃

2. The molecular formula of the hydrocarbon is C₂H₆

<h3>How to determine the mass of Carbon </h3>

Mass of CO₂ = 1.47 g
Molar mass of CO₂ = 44 g/mol
Molar of C = 12 g/mol
Mass of C =?

Mass of C = (12 / 44) × 1.47

Mass of C = 0.4 g

<h3>How to determine the mass of H</h3>

Mass of compound = 0.5 g
Mass of C = 0.4 g
Mass of H = ?

Mass of H = (mass of compound) – (mass of C)

Mass of H = 0.5 – 0.4

Mass of H =0.1 g

<h3>1. How to determine the empirical formula </h3>

C = 0.4 g
H = 0.1 g
Empirical formula =?

Divide by their molar mass

C = 0.4 / 12 = 0.03

H = 0.1 / 1 = 0.1

Divide by the smallest

C = 0.03 / 0.03 = 1

H = 0.1 / 0.03 = 3

Thus, the empirical formula of the compound is CH₃

<h3>2. How to determine the molecular formula</h3>

Empirical formula = CH₃
Molar mass = 30 g/mol
Molecular formula =?

Molecular formula = empirical × n = mass number

[CH₃]n = 30

[12 + (3×1)]n = 30

15n = 30

Divide both side by 15

n = 30 / 15

n = 2

Molecular formula = [CH₃]n

Molecular formula = [CH₃]₂

Molecular formula = C₂H₆

Learn more about empirical formula:

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4 0

2 years ago

Explain hydrogen dioxide

frozen [14]

Answer:

Two molecules of hydrogen combine with two molecules of oxygen to form hydrogen peroxide. Hence, its chemical formula is H2O2. It is the simplest peroxide (since it is a compound with an oxygen-oxygen single bond). Hydrogen peroxide has basic uses as an oxidizer, bleaching agent and antiseptic

4 0

3 years ago

How can i find the number of electrons are gained or lost

wel

15. 1 were lost

16. 3 were gained

17. 2 were lost

18. 1 was gained

You can figure that out by looking at the number nest to the molecule with a plus or minus sign next to it

+ = gained

- = lost

6 0

3 years ago

Fill in the blanks <br> At rest the frog breathes through________

Mama L [17]

Answer:

a process called predominate?

5 0

3 years ago

Read 2 more answers

If 2.32 moles of iron react with excess oxygen gas, how many moles of Fe2O3 can be produced?

bearhunter [10]

Moles Fe₂O₃ produced : 1.16 moles

<h3>Further explanation</h3>

Given

2.32 moles of iron

Required

moles of Fe2O3

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants and products)

Reaction

4 Fe + 3 O₂ ⇒ 2 Fe₂O₃

From the equation, mol ratio Fe : mol Fe₂O₃ = 4 : 2, so mol Fe₂O₃ :

= 2/4 x mol Fe

= 2/4 x 2.32

= 1.16 moles

7 0

3 years ago