______________ is a durable material and is widely used for casting, which is a process by which the melted material is poured into a mold. A. Bronze c. Copper b. Silver d. Gold Please select the best answer from the choices provided A B C D.

Answers

Answer 1

The material that has been widely used in casting has been copper. Thus, option C is correct.

Casting has been the process of molding the liquid into a specific shape with the mold. The casting involves the heating of elements and converting them into liquid. The liquid has been poured into the mold and cooling results in the casted material.

The casted material has been selected based on the boiling temperature, cooling temperature, resistivity, cost-effectiveness, and damping ability.

The material that has been consisted of these characteristics has been copper. Thus, copper has been commonly used for casting. Thus, option C is correct.

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Related Questions

Aspirin (C9H8O4) is produced from salicylic acid (C7H6O3) and acetic anhydride (C4H6O3):

C7H6O3 + C4H6O3 -----> C9H8O4 + HC2H3O2

(a) How much salicylic acid is required to produce 1.5 x 10^2 kg of aspirin, assuming that all of the salicylic acid is converted to aspirin? (b) How much salicylic acid would be required if only 80% of the salicylic acid is converted to aspirin? (c) What is the theoretical yield of aspirin of 185 kg of salicylic acid is allowed to react with 125 kg of acetic anhydride? (d) If the situation described in part (c) produces 182 kg of aspirin, what is the percentage yield?

Answers

Explanation:

the equation is yes a the line of jointing line passing the ball to is

Is this statement true or false?


A compound is a substance made of two or more elements joined in a chemical reaction.



true


false

Answers

The correct answer is False.

This is false I hope this helps goodbye

In Natural selection, who/what makes the decision about which traits are desirable and get passed to future generations?

please need help asap thank you.

Answers

Answer:

Different alleles and genes determine what gets passed down.

Explanation:

Its a pretty weird/ open ended question, but the alleles that help an organism survive, will be passed down more often because they are more "fit" and can out survive its competitors within a certain species.

Select the correct answer.
Tropical forests contain dense trees, which allow less sunlight to penetrate. Emergent trees are trees that grow to a height of more than 45 to 55 meters, above the usual height of trees in tropical forests. Which system provides the best possible explanation for why these trees grow to those heights?
A.
shunted growth pattern
B.
homeostasis
C.
due to less exposure to sunlight
D.
phototropism

Answers

B because if 7352x x 62 is 1936393 then u can divide that by 2 so it’s B

can you help me with this

Answers

Answer:

I think it is A

Explanation:

if I am wrong I am so so so sorry

but i'm pretty sure I am right.

please let me know if I am right :)

15. Which reaction produces a coloured substance?
A. The addition of sodium metal to water.
B. The addition of sulfur dioxide gas to water.
C. Burning sodium metal in chlorine gas.
D. The addition of chlorine gas to a solution of potassium iodide.

Answers

Answer:

the addition of chlorine gas to a solution of potassium iodide.

The reaction that produces a colored substance is the addition of chlorine gas to a solution of potassium iodide. The correct option is D.

What is a chemical reaction?

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.

Another sign that a chemical reaction has taken place is a change in color. If two solutions are combined and a color change occurs that is not just the effect of diluting one of the reactant solutions, a reaction has taken place. A solid and a liquid combined may also result in a change in color.

Therefore, the correct option is D. The addition of chlorine gas to a solution of potassium iodide.

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What state is represented by the sign (s)
liquid
gas
solid
dissolved in water

Answers

solid.

liquid is (l)

gas is (g)

dissolved in water is (aq)

When Brian first sorted out his thoughts, he figured this was the first day after the crash and what did he think would happen next?​

Answers

It should be noted that when Brian first sorted out his thoughts, the first thing that he thought would happen next is that he would probably be rescued that day.

It should be noted that in Chapter 5 of Hatchet, Brian wakes up in the forest and then, he realized that he was desperately thirsty.

When Brian first sorted out his thoughts, he figured this was the first day after the crash and that he would probably be rescued that day. He believed that he was going to wither up and die if he doesn't get anything that he'll drink.

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How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy “clouds,” or “orbitals”?​

Answers

How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy "clouds" or "orbitals"? Because the exact position of the electron is not known,it must be assumed that the electron takes up the entire space in an orbital.

How to write a chemical formula ?​

Answers

Answer:

To write a chemical equation, the reactants should be written on the left, and the products should be written on the right and the coefficients should be written next to the symbols of entities to indicate the number of moles of a substance produced used in the chemical reaction.

How many moles of nitrogen dioxide, NO2, are present if the reaction conditions are 330 K, 2.46 atm, and 4.8 L

Answers

There are 0.436 moles of nitrogen dioxide, NO2, present if the reaction conditions are 330 K, 2.46 atm, and 4.8 L.

IDEAL GAS LAW:

The number of moles of nitrogen dioxide (NO2) in this question can be calculated by using the ideal gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)V = volume (L)T = temperature (K)R = gas law constant (0.0821 Latm/molK)n = number of moles

According to the reaction conditions given in this question;

P = 2.46 atmV = 4.8Ln = ?T = 330K

2.46 × 4.8 = n × 0.0821 × 330

11.81 = 27.093n

n = 11.81 ÷ 27.093

n = 0.436mol

Therefore, there are 0.436 moles of nitrogen dioxide, NO2, present if the reaction conditions are 330 K, 2.46 atm, and 4.8 L.

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math! The concentration of a water and
alcohol solution is 25 percent alcohol by
volume. Calculate what the volume of alcohol
would be in 200 mL of the solution.

Answers

Answer:

50ml

Explanation:

The formula says that 25 percent of the solution is alcohol, so 200 x 0.25 equals to 50, or 50ml.

Which chemicals previously used in products such as refrigerants, aerosol sprays, and cleaning products contributed to the depletion of the ozone layer

Answers

Answer:chlorofluorocarbons (CFCs) could deplete Earth's atmospheric ozone layer, which blocks the sun's damaging ultraviolet rays. When the scientists reported their findings in 1974, CFCs were widely used as refrigerant gases and as propellants in aerosol sprays

Explanation:

what is an example of force pair​

Answers

he interaction between a baseball bat and a baseball

Earth’s layers are determined by their physical properties and chemical composition. In the lesson, you learned about each of Earth’s layers, what the layers are made of, and why they are important to the Earth. In the space below, write about how the atmosphere may be classified. Would it be part of the lithosphere, or a separate layer? Explain your answer.

Answers

Answer:

The Atmosphere Is a separate layer And Also could be classified as the Closest layer

Explanation:

Do solar panels use electrical energy or produce electrical?

Answers

Answer:

How Does a Solar Panel Generate Power? Solar panels use the photons produced by sunlight to generate direct current (DC) electricity. When the photons hit the panel they are absorbed by the panel's semiconducting silicon material.

Explanation:

Answer:

Solar panels produce electrical energy by absorbing the solar energy from the sun and converting it into electrical energy.

Explanation:

A compound contains 40%carbon, 6.7%hydrogen, and 56.3%oxygen
calculate the molecular formula of the compound, if it’s vapour density is 90. Note that molecular
mass=2 x vapeur density

Answers

180 might be the answer man

why does a oxygen atom form a 2- ion

Answers

Answer:

It's because it has 2 electrons on its outer ring

Explanation:

It has a -2 ion due to it having 2 more electrons than protons making it an overall negative. It's well known in chemistry that the first ring can only hold 2 electrons while the second and furthermore can hold up to 8. But what happens when you have 9? a new ring starts and it would only contain 1 electron.. In our case here it has 2 more electrons than protons and those 2 electrons are located on the outer ring

17. The choose the answer that is correct about the Earth's mantle.

made of magnesium, iron, and calcium

made of rocky materials and water

made of the same rocky materials as the crust

made mostly of iron and nickel

Answers

it's actually made of silicates and believe it or not magnesium is a silicates so the closest would have to be A made of magnesium, iron, and calcium

A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?

Answers

Answer:

The frequency of the wave is 34 Hertz

What is a mixture ?

How do homogeneous & heterogeneous mixtures differ ?

Answers

1st question: A mixture is when the components of a mixture can be easily separated and that the components each keep their original properties.

2nd question:A phase is any part of a sample that has a uniform composition and properties.By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.

Heterogeneous mixtures are not uniform in composition. Examples would be wood or blood. Homogeneous mixtures are uniform through out. Typically you can see through them.

How do mixtures form?

Answers

Answer:

A mixture is created when two or more different substances are physically combined and can be separated back into its original substances. A chemical reaction occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances.

Explanation:

Answer:

A mixture is created when two or more different substances are physically combined and can be separated back into its original substances.

Explanation:

Hope it helps

1. How many covalent bonds can nitrogen form?

2. Which of the following represents a covalent compound?
A. O2
B. CO2
C. Cl2
D. NaCl

3. 2. Nitrogen is a diatomic element with five valence electrons. Create a model of a molecule of nitrogen.

Answers

Answer:

1. 3 covalent bonds

2. CO2

Nitrogen can form three covalent bonds and carbon dioxide  represents a covalent compound.Molecule of nitrogen is attached in image below.

What is a covalent bond?

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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How many particles would be found in a 12.7 g sample of ammonium carbonate? Show workkk

Answers

Answer:

7.8286×10²¹ particles

Explanation:

give me brainlist please

EARTH SCIENCE: PLEASE HELP ME !!! Which tools do astronomers use to determine the effects of collisions between galaxies? Select the two correct answers.(1 point)

computer simulations

print encyclopedia entries

space telescopes

solar system models

Answers

In studying effects of collisions between galaxies, astronomers usually make use of space telescopes.

Astronomy deals with the study of outer space. The study focuses on planets and other celestial bodies. Generally telescopes are used to study outer space. The particular type of telescope that is used depends on the need.

In studying effects of collisions between galaxies, astronomers usually make use of space telescopes.

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Order the following elements according to the valence numbers from lowest to highest


1. Boron

2. Sodium

3. Chlorine

4. Beryllium

Answers

Sodium I hope this helps

Is this soulution acidic or basic

Ph= 12

Basic

Acidic

Answers

Answer:

basic

Explanation:

ph>7 soits basic not acidic

Answer: A pH greater than 7 is basic

Explanation:

Because if you look at a ph scale the number 12 is apart of the alkaline part. if its apart of the alkaline park it mean it is not a basic acidic

how many molecules are in 122 grams of Cu(NO3)2

Answers

Answer:

3.917 x 10 ^ 23

Explanation:

You just want to use dimensional analysis to solve. So first start with 122g of copper(II) nitrite, and divide by the molecular weight to get it into moles. Then you know that 1 mole = 6.022 x 10 ^23 molecules (Avogadro's Number) so multiply that by your current moles. A hint for these problems always convert what you were given to moles since it is easy to get to a lot of things through them. ** Use the molar mass/molecular weight for going from grams to moles or moles to grams and use Avogadro's number when going from moles to atoms/molecules or reverse.

Hope this helps!

Synthetic fibers, like plastic, are derived from organic compounds. These fibers have been chemically changed by humans to last longer for better storage and more effective uses. These fibers are stronger than naturally occurring fibers like cotton and wool. Which of the following is a downside to these synthetic fibers when compared to natural fibers?
A.
The longer lasting material is more difficult to break down.
B.
The longer lasting material is less useful in manufacturing.
C.
The longer lasting material is not able to withstand high temperatures.
D.
The longer lasting material makes the fibers more expensive to buy.

Answers

The downside of this is that the longer lasting material is more difficult to break down.

Both natural fibers and synthetic fibers are polymer materials. Polymer materials are materials that are made by the agglomeration of small molecules called monomers.

The natural fibers are less long lasting than the synthetic fibers. The downside of this is that the longer lasting material is more difficult to break down. As a result of these, synthetic fibers lead to environmental pollution problems.

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Answer:

the longer lasting material is more difficult to break down.

Explanation:

Filtration of wastewater flowing over a surface of land with vegetation and water is a
an artificial wetland
a stabilization pond
a biodegradable treatment
an open aeration pond

Answers

Filtration of wastewater flowing over a surface of land with vegetation and

water is a biodegradable treatment.

Biodegradable substances are those which can be recycled for other uses

such as manure etc. The filtration of the waste water helps to remove

organic materials and pathogens present in it. The organic materials

removed can then be used for other purposes.

The pathogens are then destroyed to prevent the spread of diseases within

the area. The explanation makes biodegradable treatment most appropriate.

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