CHEMISTRY HIGH SCHOOL

Which of the following units is a derived unit?
Second
Meter
Density
Ampere

Answers

Answer 1
Answer:

Answer : The correct option is, Density

Explanation :

S.I : It is known as the international System of Units. It is defined as a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As per question, second, meter and ampere are the S.I units but the density is the derived unit.

Density : It is defined as the mass of a substance contained per unit volume.

The unit of mass is kilogram (kg) and the unit of volume is m^3. So, the unit of density will be:

Formula used :

Density=(Mass)/(Volume)=(kg)/(m^3)=kg/m^3

The unit of density is, kg/m^3

Hence, the derived unit is density.
Answer 2
Answer: Density because you have to use volume and mass to get it. (Density=mass/volume)

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What is a system and how is it used

Answers

Simply put, a system is an organized collection of parts (or subsystems) that are highly integrated to accomplish an overall goal. The system has various inputs, which go through certain processes to produce certain outputs, which together, accomplish the overall desired goal for the system. A system is a collection of elements or components that are organized for a common purpose. The word sometimes describes the organization or plan itself (and is similar in meaning to method, as in "I have my own little system") and sometimes describes the parts in the system (as in "computer system"). A system is a group of interacting or interrelated entities that form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and expressed in its functioning. Systems are the subjects of study of systems theory. The term "system" comes from the Latin word systēma, in turn from Greek σύστημα systēma: "whole concept made of several parts or members, system", literary "composition".

In the commercial manufacture of nitric acid, how many liters of nitrogen dioxide will produce 30 liters of nitric oxide given that both gases are at STP?3NO2 + H2O 2HNO3 +NO
A) 20 liters
B) 0.1 liters
C) 40 liters
D) 90 liters
E) 1.01 liters

Answers

At STP (standard pressure and temperature) each mole of gas occupies a volume of 22.4 liters.

The balanced chemical reaction tells you that 3 moles of nitrogen dioxide produce 1 mol of nitric oxide (both gases as per problem specifications).

3 moles * 22.4 = 67.2 liters

1 moles * 22.4 liters = 22.4

Ratio: 67.2 liters of nitrogen dioxide / 22.4 liters of nitric oxide = x liters of nitrogen dioxide / 30 liters of nitric oxide

Solve for x: x = 30 liters of nitric oxyde * 67.2 liters of nitriogen dioxide / 22.4 liters of nitric oxide = 90 liters oxide.nitrogen dioxide.

Answer:

plato answer d

Explanation:

1. How the Bible came to be?2. Why it must be regarded as Sacred?
3. Why it should be respected?

Answers

Answer: 1. How the Bible came to be?

The Book of scriptures could be a collection of sacrosanct books composed by antiquated prophets and students of history over a period of more than 4,000 a long time. The Book of scriptures is isolated into two primary parts: the Ancient Confirmation, which contains 39 books, and the Modern Confirmation, which contains 27 books. The Ancient Confirmation was composed fundamentally in Hebrew, with a few parcels in Aramaic, whereas the Unused Confirmation was composed in Greek. The books of the Book of scriptures were composed by distinctive creators, counting prophets, rulers, clerics, and witnesses, who were motivated by God to record His message to humankind.

2. Why it must be respected as Sacred?

The Book of scriptures is respected as sacrosanct since it is considered to be the word of God. The Book of scriptures instructs that God never stops adoring His children, and it uncovers God's character and gives His disclosure of Himself to His individuals. The Book of scriptures is God's composed disclosure to humankind, and when initially composed, it was without blunder and speaks with God's specialist. The Book of scriptures could be a source of shrewdness, instructing, condemnation, rectification, and preparing in nobility. The Book of scriptures has had a extraordinary impact on afterward lawful frameworks in numerous parts of the world.

3. Why it should be respected?

The Book of scriptures ought to be regarded since it is God's Word to humanity. The Book of scriptures educates around Jesus and the Ten Commandments, which require us to adore God and treat others with regard. The Book of scriptures may be a source of shrewdness, instructing, condemnation, rectification, and preparing in righteousness. The Book of scriptures is the establishment for the religious philosophy of work and tells the story of God's work of creation, the primary work of all and the model for all work that take after. The Book of scriptures ought to be drawn closer in a appropriate way, and it ought to be treated with love and regard as the composed Word of God to humankind.

Explanation:

How many liters of oxygen are required to burn 3.86 of CO2??

Answers

1.93 litres. hope i helped!!

Name at least three types of energy associated with a microwave

Answers

I'm pretty sure what you are trying to ask for is radiative energy, light energy, and electronic energy.
Radiative since the microwave is releasing radiation,
Light since there is light inside the microwave,
Electronic since it is plugged in and uses electricity.
You can also use sound, but I don't think every microwave makes sound. 

Please Help meHello guys,i really need your help for a few questions about the greek philosopher "Democritus"
1)revisions that were made to Democritus's model once further research was done.
2)one challenge that the scientist had to overcome.

please help me

Answers

Democritus was the first to propose the idea of the atom. He said the atom was just this tiny, solid sphere. However, he used no scientific evidence to support his claim, so a guy named John Dalton did some experimenting and basically backed up Democritus' claim with evidence. Then, a guy named J.J. Thompson came along and said the atom was not solid and that is consisted of tiny negatively charged particles(electrons) and he came up with the Plum Pudding model which is just a tiny sphere with a punch of random scattered dots in it. After that, Ernest Rutherford did experiments and found that the tiny sphere is made up of mostly empty space with a tiny, dense, positively charged sphere inside of it, and the negatively charged particles just randomly float around it. Neils Bohr then said that the electrons take specific, circular, evenly spaced paths. Then, finally, we come to the Quantum Mechanical Model which is the one accepted today. This model basically vetos Bohr's idea and has a nucleus inside of an electron cloud, which is where the electrons are found.
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