CHEMISTRY HIGH SCHOOL

To ensure accurate recall of the experimental data, at minimum one should

Answers

Answer 1
Answer: To ensure accurate recall of the experimental data, at minimum one should keep a record of the data of all the experiments done. Also, the date when it is recorded is important so as to support that the data is real and not only made up.
Answer 2
Answer:

Answer:

record the data in writing

Explanation:

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List at least three ways of forming/ molding pewter and explain how each is achieved.

Answers

Answer:

1. Sand Casting: Sand casting is a popular method used to create pewter objects. Here's how it's achieved:

- First, a pattern or model of the desired object is created using materials like wood, plastic, or metal.

- The pattern is then pressed into a special type of sand called green sand, leaving an impression.

- Next, the pattern is removed, leaving a cavity in the sand.

- Molten pewter is poured into the cavity and left to cool and solidify.

- Once cooled, the sand is carefully removed, revealing the pewter object.

2. Spin Casting: Spin casting, also known as centrifugal casting, is another way to mold pewter. Here's how it works:

- A rubber mold of the object is created, usually using a master pattern made of wax or another material.

- The rubber mold is placed in a casting machine that rotates at high speed.

- Molten pewter is poured into the mold while it spins.

- The centrifugal force evenly distributes the pewter, filling the mold's cavities.

- As the pewter cools, it solidifies and takes the shape of the mold.

- Once cooled, the mold is opened, and the pewter object is removed.

3. Die Casting: Die casting is a method used for producing high-quality pewter objects. Here's how it's done:

- A metal mold, called a die, is created to match the desired shape of the object.

- Molten pewter is injected into the die under high pressure.

- The pressure ensures that the pewter fills the mold completely and captures all the intricate details.

- After a short cooling period, the die is opened, and the pewter object is ejected.

Explanation:

These are just a few ways to form or mold pewter. Each method has its advantages and is suitable for different types of objects. It's important to choose the appropriate method based on the complexity of the design and the desired quality of the final product.

If a gas is heated from 263 to 298 k, the volume is 24 l to 35 l at 1.00 atm pressure. what is the final pressure?

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There is a formula for this:
P1*V1/T1=P2*V2/T2

just plug in the numbers and solves!!
if you have any more issues, let me know!!

What is igneous rock?

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Answer:  A) Rock formed by...magma or lava

Explanation:

As the question says, igneous rocks are formed from the cooling and solidification of magma or lava.

just a bit of visual aid thanks to Thoughtco.

Answer:

It is the first one - Rock formed by the cooling and solidification of hot liquid magma or lava.

Explanation:

For strontium chloride, the light released when electrons transition between energy levels has a wavelength of 630 nm. Calculate:the wavelength in meters
the frequency in Hertz
the Energy in Joules

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The energy in joules

Which of the following has the greatest mass? Star, Moon, Planet or Galaxy?YOU GET MANY POINTS)​

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Answer:

galaxy

Explanation:

because it contains the whole universe
Yep galaxy is the one

The orderly geometric arrangement of atoms is called a crystalline solid. a. True
b. False

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True
A) This fact is always true
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Which net change occurs in a nuclear fusionreaction? (1) Ionic bonds are broken. (2) Ionic bonds are formed. (3) Energy is converted to mass. (4) Mass is converted to energy.