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3 years ago

What is conditional reflexes??

Chemistry

1 answer:

SIZIF [17.4K]3 years ago

6 0

Answer:

Actions that you have trained yourself to perform.

they are obtained by experience. they are not passed from generation. they can be learnt or abolished. Higher center's of brain is responsible for conditional reflexes

Explanation:

example riding a bike, swimming, typing

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garri49 [273]

Answer:

D.)

Explanation:

Water, also known as H2O in chemistry, is a chemical substance.

Water vapor is the gas form of water, also known as the effect of evaporation. Ice is made up of water as well. It is the frozen version of water, or it other terms, the solid form of it.

I hope that this helps.

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2 years ago

To prevent rust, nails are coated with ________. To prevent rust, nails are coated with ________. salt calcium lithium sodium zi

Arturiano [62]

Answer:

the answer to this question is zinc

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3 years ago

Identify the property of the matter described below.

ZanzabumX [31]

Answer: C.

Explanation: Alcohol floats on oil and water sinks in oil. Water, alcohol, and oil layer well because of their densities, but also because the oil layer does not dissolve in either liquid. The oil keeps the water and alcohol separated so that they do not dissolve in one another. ... Water sinks because it is more dense than oil.

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3 years ago

What is the first basic metal on the periodic table

kherson [118]

The first basic metals on the periodic table are alkali metals.

4 0

3 years ago

Which of the following reactions have a positive ΔSrxn? Check all that apply.

PolarNik [594]

Answer:

The reactions that have a positive ΔS rxn are the first and the fourth choices:

2A(g) + B(s) → 3C(g)

2A(g) + 2B(g) → 5C(g)

Explanation:

ΔS rxn is the change of entropy of the chemical reaction.

ΔS rxn = S after reaction - S before reaction.

Therefore, a positive ΔS rxn means that the entropy after the reaction is greater than the entropy before the reaction.

You may use some assumptions to predict whether a reaction will lead an increase or decrease of the entropy.

First, assume that all the non-shown conditions, such as temperature and pressure, are constant.

Under that assumption, and from the meaning of entropy as a measure of the disorder or randomness of a system you can predict the sign of the change of entropy.

2A(g) + B(s) → 3C(g)

1) The solid compounds, B(s) in this case, are very ordered and so they have low entropy.

2) Gas molecules are highly disordered (scattered), and the greater the number of molecules of the gas the larger the entropy, S).

Hence, since the product side shows 3 gas molecules and the reactant side shows 2 gas molecules and 1 solid molecule, you predict that the products have a larger entropy than the reactants, meaning an increase in entropy: ΔS rxn is positive.

2A(g) + B(g) → C(g)

Using the same reasoning, 3 gas molecules in the reactant side have more entropy than 1 molecule in the product side, and so the reaction leads to a decrease in the entropy: ΔS rxn is negative

A(g) + B(g) → C(g)

Again, 2 gas molecules in the reactant side have more entropy than 1 molecule in the product side, and so the reaction leads to a decrease in the entropy: ΔS rxn is negative

2A(g) + 2B(g) → 5C(g)

With the same reasoing, 5 molecules in the product side, lets you predict that will have more entropy than 4 molecules in the reactant side, and, the entropy will increase: ΔS rxn is positive.

6 0

3 years ago

What is conditional reflexes?? ​

What is conditional reflexes??