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3 years ago

Record 4 concepts you learned from Matter, properties and Phases. It’s due today!!!

1 answer:

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Answer: Four concepts I’ve learned from Matter,properties, and phases is that matter is made up of 3 things solid,liquid, and gas and is what the earth is made up of. Properties are the characteristics of an object (characteristics of matter). Phases are something that things can go through such as a chemical change or a caterpillar turning to a butterfly, they are all phases.

Explanation: <3 I really hope this helped!

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Relate dark matter to the development of the universe after the Big Bang. In 3-5 sentences, speculate on how the development of

Ilya [14]

Answer:

Dark matter also called baronic matter is the matter that makes up 27% of the universe.

In 1933 it was determined as that mass that cannot be seen, that is, the non-visible mass of outer space.

Dark matter also plays a central role in the formation of structures and the evolution of galaxies and has measurable effects on the anisotropy of cosmic microwave background radiation. The composition of this matter is unknown today.

The dark matter component has considerably more mass than the "visible" component of the Universe.

Explanation:

There are certain researchers who say that the appearance of dark matter was before the appearance of the big bang.

A relevant fact of this matter is that dark matter exerts gravity, and that gravity affects the movements of objects.

Despite the fact that nothing is known about its origin, astronomers have amply demonstrated that dark matter plays a determining role in the formation of galaxies and galactic clusters, which could not maintain their cohesion without its existence, but many doubt that it is the remainder / remnant or product of a big bang.

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4 years ago

Part 1: Draw the major organic product for the proton transfer reaction between sodium hydride and ethanol; be sure to include l

valina [46]

Answer:

Major product ethoxide ion

Explanation:

Sodium hydride acts as a strong base towards ethanol.
Hydride ion abstracts one proton from -OH group in ethanol to produce sodium ethoxide and hydrogen gas.
It is an example of acid-base reaction where sodium hydride acts as a base and ethanol acts as an acid
Structure of major organic product i.e. ethoxide ion has been shown below.

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3 years ago

What is the proper way of collection, preservation and transition of hair?

Murrr4er [49]

An investigator can collect hairs they observe visually (with tweezers or by hand), and they can also use clear tape to lift non-visible hair from a variety of surfaces, such as clothing. Other methods of hair sample collection include combing and clipping methods.

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3 years ago

10. A small helium tank claims to be able to fill 30 balloons to a volume of 3.15 L

Sindrei [870]

Taking into account the Boyle's law, 3.377 L of helium the tank will be able to produce at a pressure of 94.2 kPa.

The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature, and moles.

Boyle's law is one of the gas laws that relates the volume and pressure of a certain quantity of gas kept at constant temperature.

This law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. That is, if the pressure increases, the volume decreases; while if the pressure decreases, the volume increases.

Mathematically, Boyle's law states that the product of pressure and volume is constant:

P×V= k

Studying two different states, an initial state 1 and a final state 2, it is satisfied:

P1× V1= P2×V2

In this case, you know:

P1= 101 kPa
V1= 3.15 L
P2= 94.2 kPa
V2= ?

Replacing in Boyle's law:

101 kPa× 3.15 L= 94.2 kPa× V2

Solving:

$V2=\frac{101 kPa x3.15 L}{94.2 kPa}$

In summary, 3.377 L of helium the tank will be able to produce at a pressure of 94.2 kPa.

Learn more:

brainly.com/question/4147359?referrer=searchResults

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3 years ago

Who organized the periodic table?

Wittaler [7]

Dmitri Mendeleev was the creator and therefore organizer of the periodic table.

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3 years ago

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