What kinds of scientific investigations involve making observations?

Answers

Answer 1
Answer: 1. Coherence Theory (Theory of Coherence)

Based on this theory, a knowledge considered to be true if the knowledge kehoren with the knowledge that exists and has been proven to be true. In the study of mathematics this is usually called the deductive nature.

2. Correspondence Theory (Theory of corespondence)

Based on this theory, a knowledge considered to be true if the knowledge of having a relationship with a reality that is true. This theory is based on the empirical fact that knowledge is true if there are facts that support that is true knowledge. Thus the truth here is based on inductive inference.

3. Pragmatic Theory (Theory of Pragmatism)

According to this theory, knowledge is said to be true if the knowledge is seen practically completely or have properties that true practicality. Followers of this theory argue that knowledge is true if it has keguanaan practical.

Answer 2
Answer:

Answer:

the hypothesis is the anawer.


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ETHANHUNT PLS HELPA light bulb converts electrical energy into light energy and also some thermal energy.  The amount of electrical energy is 50 Joules before the conversions.   What is the total amount of energy from before the conversions to after the conversions?   45 Joules because some energy is lost when it is put off as heat. 100 Joules because you start with one form of energy and end up with two forms, so the amount of energy doubles. 50 Joules because as energy converts from one form to another, it cannot be created or destroyed during the conversion.  55 Joules because as more electricity comes in to the light bulb, the Joules increase.

I need help on this ASAP

Answers

Answer:

Its acrylic, nylon, and polyester :)

Explanation:

acrylic, nylon, polyester

Is hydrogen malleable, ductile or brittle

Answers

Hydrogen is a gas, therefore it is neither ductile or brittle. we can not smash it with a mallet. nor break it in half. Its a gas.

Final answer:

Hydrogen is a nonmetal that does not exhibit properties such as malleability or ductility. Hydrogen is a unique element in the universe and its physical and chemical properties differ markedly from malleable or ductile elements, such as metals. Thus, hydrogen is neither malleable, ductile, nor brittle.

Explanation:

Hydrogen is a unique element in the universe, and its physical and chemical properties differ significantly from those of elements that are classified as malleable or ductile, such as metals. Properties such as being shiny, malleable, and ductile are characteristics of metals which can be deformed without breaking or drawn into wires, and they conduct heat and electricity well. However, hydrogen is a nonmetal and under normal conditions, it is relatively inactive chemically. It does not demonstrate properties like malleability or ductility as metals do. Hence, hydrogen is not malleable, ductile, or brittle.

Learn more about Hydrogen here:

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A mole or fraction of a mole represents a ____ number of atoms or molecules.A : specific

B : nonspecific

Answers

Answer:

specific

Explanation:

a mole represents the amount of grams it takes to have avogadro's number

Answer:

A is your answer

Explanation:

Why is the chlorine that is added to final,treated waste water allowed to get used up
before it is discharged into a river or lake?

Answers

Chlorine is used as a disinfectant to wastewater treatment plants. The addition of chlorine to the final treated water is because to make sure that some of the microorganisms not killed during treatment is eliminated. It is consumed before it is released to the environment to ensure that microorganisms and other marine life are not killed in the process too.

You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to completion to form SO₃. If the temperature after the reaction is 25°C and the pressure in the container is 1.65 atm, what is the density of the product gas mixture? Assume ideal behavior.

Answers

The density of the product gas mixture is 5.39 g/L

Explanation:

Given:

Temperature after the reaction = 25^0C

Pressure in the container = 1.65 atm

The ideal gas equation PV = nRT

To find: Density of the product gas mixture

Step 1:

Molarity (M) = P/(RT)

\[M=(P)/(R T)\]$M=\frac{1.65 \mathrm{atm}}{\left(0.08206 (L \cdot a t m)/(m o l . K)\right)(298.15 K)}$

M = 0.0674 mol/L

Step 2:

The product of the given reaction is SO_3. Its molar mass is

1S x 32.066 g/mol = 32.066 g/mol

3O x 16 g/mol = 48 g/mol

Adding both we get 80.066 g/mol

Therefore the density of the product gas mixture is 0.0674 \frac{{mol}}{L} * \frac{80.066 g}{1 \mathrm{mol}}

= 5.39 g/L

Which is the correct chemical formula for hydrogen gas?

Answers

Hydrogen gas is known as the chemical formula >  H2
It consists of 2 hydrogen gases.