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3 years ago

Assess the importance to organisms of maintaining homeostasis.

Chemistry

1 answer:

sweet [91]3 years ago

7 0

Answer:

The protection of internal environment from the harms of fluctuations in external environment is termed as homeostasis.

Explanation:

Homeostasis is the central requirement in the maintenance of an organism, which compels the adaptations in the constant changing condition and contribute in evolutionary process.

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Some elementary particles are positively or negatively

vodomira [7]

Hello there.

Some elementary particles are positively or negatively

b. charged particles.

8 0

4 years ago

Statements

allochka39001 [22]

1. Make an observation : My toaster doesn't toast my bread

2. Ask a question : Why doesn't my toaster work?

3. Form a hypothesis : My coffeemaker works when plugged into the outlet

4. Make a prediction : If something is wrong with the outlet, then my coffeemaker also won't work when plugged into it

5. Conduct an experiment : I plug my coffeemaker into the outlet

6. Analyze the results : There is something wrong with the electrical outlet

Explanation:

The solution to the problem is as shown above.

A scientific method follow a methodical way of critically carrying out an inquiry into an observation.
Firstly, an observation is usually made with our senses. Here the researcher observes that the toaster does not toast his bread probably after a long wait.
He then proceeds to ask why the toaster does not work.
To investigate this, the forms a hypothesis. A hypothesis is a scientific guess. It is a tentative proposition about an investigation.
The researcher then makes a prediction about the outlet that might be faulty.
With this background, he goes on to carry out an experiment to substantiate his findings. This is seen when he plugs the coffeemaker into the outlet.
From the analysis of result, he sees that that something is wrong with the outlet.

Learn more:

purpose of experiment brainly.com/question/5096428

#learnwithBrainly

7 0

3 years ago

Determing Valence Electrons

ioda

Gallium ( Ga ) is the answer

6 0

3 years ago

The gas cyclobutane, C4H8(g), can be used in welding. When cyclobutane is burned in oxygen, the reaction is: C4H8(g) + 6 O2(g)4

Snowcat [4.5K]

Answer:

$\Delta H^o _{rxn} = -2568.9 \ kJ$

$H = 350 JK^{-1}$

$T_{max} = 32.4 ^o C$

Explanation:

From the question we are told that

The reaction of cyclobutane and oxygen is

$C_4H_8_{(g)} + 6 O_2_{(g)} \to 4 CO_2_{(g)} + 4 H_2O_{(g)}$

ΔH°f (kJ mol-1) : C4H8(g) = 27.7 ; CO2(g) = -393.5 ; H2O(g) = -241.8 ΔH° = kJ

Generally ΔH° for this reaction is mathematically represented as

$\Delta H^o _{rxn} = [[4 * \Delta H^o_f (CO_2_{(g)} ) + 4 * \Delta H^o_f(H_2O_{(g)} ] -[\Delta H^o_f (C_2H_6_{(g)} + 6 * \Delta H^o_f (O_2_{(g)}) ] ]$

=> $\Delta H^o _{rxn} = [[4 * (-393.5) + 4 * (-241.8) ] -[ 27.7 + 6 * 0]$

=> $\Delta H^o _{rxn} = -2568.9 \ kJ$

Generally the total heat capacity of 4 mol of CO2(g) and 4 mol of H2O(g), using CCO2(g) = 37.1 J K-1 mol-1 and CH2O(g) = 33.6 J K-1 mol-1. C = J K-1 is mathematically represented as

$H = [ 4 * C_{CO_2_{(g)}} + 6* C_{CH_2O_{(g)}}]$

=> $H = [ 4 * 37.1 + 6* 33.6 ]$

=> $H = 350 JK^{-1}$

From the question the initial temperature of reactant is $T_i = 25^oC$

Generally the enthalpy change( $\Delta H^o _{rxn}$ ) of the reaction is mathematically represented as

$|\Delta H^o _{rxn} |= H * (T_{max} -T_i)$

$2568.9 = 350 * (T_{max} -25)$

=> $\frac{2568.9 }{350} = T_{max} - 25$

=> $T_{max} = 32.4 ^o C$

4 0

3 years ago

While preparing for his first Chemistry exam, Jaden is studying the elements and trying to memorize their abbreviations. On test

Crazy boy [7]

Answer:

The correct option is: Recency effect

Explanation:

Serial position effect is a concept that describes the effect of the position of an item in a sequence on its recall accuracy. According to this theory, in a sufficiently long list of items, an individual is more likely to recall the first and the last items with greater accuracy than the middle items.

There are two types:

1. Recency effect: The items in the end of the list or series are recalled first and more accurately.

2. Primacy effect: The items in the beginning of the list or series are recalled first and more accurately.

In the given example, Jaden can only recall the abbreviation for the last 5 elements in a list of 30 elements. This tendency is known as Recency effect.

3 0

3 years ago