Which of the following substances can be classified as a salt?A.
Sodium Chloride (NaCl)
B.
Vinegar (CH3COOH)
C.
Baking Soda (NaHCO3)
D.
Bleach (NaClO)

Answers

Answer 1

Answer:

Sodium Chloride (NaCl) can be classified as a salt

Explanation:

Sodium chloride is an "ionic compound" is known as salt. The ratio in which the sodium(Na) and chloride(Cl) present in sodium chloride in NaCl is 1:1. It is found in seawater and is accountable for the salinity of the seawater. Also, NaCl is the extracellular fluid for various multicellular organisms.

When refined, it becomes in its 'edible' form and is used in food preservatives. Whereas, the large quantity of sodium chloride is used in various industries.

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1. A scientific hypothesis can become a theory if ______.A) the entire community accepts it
B) the hypothesis is tested extensively and competing hypothesis are eliminated
C) there are no other competing hypothesis
D) the hypothesis can be tested at least once
2) A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific ________.
A) law
B) theory
C) fact
D) hypothesis

Answers

1. A scientific hypothesis can become a theory if the hypothesis is tested extensively and competing hypothesis are eliminated. A scientific hypothesis is a proposed explanation made on the basis of reasoning without any assumption. For hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation.

2. A preliminary untested explanation that tries to explain how or why thing happen in the manner observed is a scientific hypothesis. A primary trait of a hypothesis is that something can be tested and that those tests can be replicated. A hypothesis is often examined by multiples scientists to ensure the integrity and veracity of the experiment. The process can take years, and in many cases hypothesis do not go any further in the scientific method as it is difficult to gather sufficient supporting evidence.

Which gas law has the assumptions of a fixed amount and volume of a gas?Boyle’s law

Gay-Lussac’s law

Avogadro’s law

Charles’s law

correct answer is gay lussacs law

Answers

Gay lussac is the answer

Answer:

Gay-Lussac’s law

Explanation:

Gay's law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant.

Where do clouds form

Answers

Answer:

Clouds generally form within the troposphere.

Explanation:

A cloud is a mass of water droplets, ice crystals or both at the same time, which remains in suspension in the atmosphere, and whose formation is due to the condensation of water vapor in the sky.

Clouds form when the air is saturated and can no longer contain water vapor, this can happen in two ways:

1. The amount of water in the air has increased.

2. The air cools to its dew point.

Clouds generally form within the troposphere.

Weather occurs in the Earths troposphere. So in fact, most clouds are formed there.

Why does a catalyst work for a long time before it needs replacing?

Answers

because the catalyst is not really part of the reaction. it is something that speed up a reaction by lowering the energy need for the reaction to take place. however, in the end the catalyst is brought back to its initial state. that's why it is long lasting

Write about the characteristics of carbon compounds:the carbon atom
structure
connection types;

Answers

The characteristics of carbon compounds are they exist with different structures in which the atoms are arranged differently and it forms more compounds than other elements combined.

Explanation:

The carbon atom has atomic number 6 which represents the number of electrons. It is represented by C and it is a non- metal. It has 6 protons, 6 neutrons, and 6 electrons. They are smaller in size so that it can fit in to larger molecules.

It is the only element that can form different compounds because each carbon atoms can form four chemical bonds to other atoms.

The structure of carbon atom is represented with its atomic number 6. The first two electrons are present in inner shell and the remaining four are present in the second shell.

The carbon combines with oxygen, hydrogen, and nitrogen to form many molecules for cellular function. Carbon and hydrogen combine to form hydrocarbon chains and rings.

For example the structural formula for Methane (CH4)

A gas occupies 0.105 L at 105 K. At what Celsius temperature will its volume be 0.140 L? Assume that pressure remains constant. It would be great if you could show work!

Answers

This problem can be solved using the Combined Gas Law. The formula for it is

$(P_(1) V_(1) )/(T_(1) ) = (P_(2) V_(2) )/(T_(2) )$

Let's go ahead and plug in the known values. Since pressure remains the same, it does not matter what value we plug in, so let's assume 1 atm for both sides.

$((1 atm) (0.105 L))/((105 K)) = ((1 atm) (0.140 L) )/(x K)$