Why are alloys preferable at times?

Answers

Answer 1

Answer: Alloys are preferable at times because they offer interesting properties than pure metal. Alloys are made in order to modify or enhance properties, especially mechanical properties. Examples are stainless steel, brass and wrought iron.

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Conditioning is the process ofa. discrimination.
b. spontaneous recovery.
c. learning associations.
d. observational learning.

Answers

Conditioning is the process of C. learning associations.

Two types of conditioning.
1) Classical conditioning
2) Operant conditioning.

Classical conditioning happens when an individual learns to associate two stimuli. This happens when an association is learned between an unconditioned stimulus and a conditioned stimulus.

Operant conditioning happens when an individual associates a behaviour with a consequence. For example, when a behaviour produces a good consequence; the individual is conditioned to repeat the behaviour to garner the same good consequence, and vice versa.

Final answer:

Conditioning is the process of learning associations between events that occur in a being's environment. It can be split into Classical and Operant conditioning, with the former dealing with learning associations between two stimuli that co-occur and the latter with learning associations between a behavior and its consequence.

Explanation:

Conditioning is the process of learning associations between events that occur in an organism's environment. This can be further divided into two main types: Classical (or Pavlovian) conditioning and Operant (or Instrumental) conditioning. Classical conditioning involves learning associations between two stimuli that co-occur, while Operant conditioning is learning associations between a behavior and its consequences.

For example, if a student studies hard (behavior) and then gets good grades (consequence), this could reinforce the student's study habits through operant conditioning. The more this association is reinforced, the stronger the learning becomes. So, the correct answer to the question is c. learning associations.

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What is the mass percent of chlorine in magnesium chloride?

Answers

The total mass of magnesium chloride is 95.21g/mol

The mass of chlorine is 35.45g/mol

To find the mass percent of chlorine, divide its molar mass by the total mass of the substance and multiply the result by 100:
(35.45/95.21)(100)= 37.2%

water is mixed with solid calcium nitrate in a beaker. write balanced net ionic equation for the reaction

Answers

When calcium nitrate is added or mixed with water, the substance would dissociate into its corresponding ions which are calcium and nitrate ions. The ionic equation would be:

Ca(NO3)2 = Ca2+ + NO3-

Hope this answers the question. Have a nice day. Feel free to ask more questions.

Answer : The net ionic equation will be,

$Ca^(2+)(aq)+2OH^(-)(aq)\rightarrow Ca(OH)_2(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced ionic equation will be,

$2H_2O(aq)+Ca(NO_3)_2(aq)\rightarrow 2HNO_3(aq)+Ca(OH)_2(s)$

The ionic equation in separated aqueous solution will be,

$4H^+(aq)+2OH^(-)(aq)+Ca^(2+)(aq)+2NO_3^(-)(aq)\rightarrow Ca(OH)_2(s)+2H^+(aq)+2NO_3^(-)(aq)$

In this equation, $H^+\text{ and }NO_3^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$Ca^(2+)(aq)+2OH^(-)(aq)\rightarrow Ca(OH)_2(s)$

The 3 in 4p3 represents:a. third energy level
b. the number of electrons
c. period 3
d. the third sub level e. Li

Answers

Answer: b. the number of electrons

Explanation: $4p^3$

1. 4 is the principal quantum number which describes the size of the orbital. It is represented by n.

2. The electrons are present in p sub shell also called as azimuthal quantum Number:This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For p orbital, l=1.

3. The p subshell contains 3 electrons.

b) the number of electrons

If a solid, a liquid, and a gas of a substance are each in separate covered jars, then the amount of kinetic energy of the particles of the substances decreases from solid to liquid to gas.True
False

Answers

Answer:

false

Explanation:

i had the same thing to do

What does Mg stand for in chemistry

Answers

Mg is an element that stands for Magnesium.

Mg is the chemical symbol for Magnesium.

- - In relation towards chemistry, Mg is equal to and standing for magnesium(mg).

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In the following combustion reaction of acetylene (C2H2), how many liters of CO2 will be produced if 60 liters of O2 is used, given that both gases are at STP?2C2H2+5O2 2H2O+4CO2 The volume of one mole of gas at STP is 22.4 liters.