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Yanka [14]
3 years ago
6

What do you call an idea or explanation that you test through study and experimentation?

Chemistry
1 answer:
Setler [38]3 years ago
8 0
Hypothesis is based on observation and is possible explanation that needs to be tested.
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How many grams of CO2 are in 14 mol of the compound?
Kisachek [45]
First you have to see were your at so your at 14 so how many mol does get to 14 using 4
3 0
3 years ago
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Calcule la formula empírica de la sustancia está compuesta por 18,4% de carbono 21,5% de nitrógeno y 60,1% de potasio
n200080 [17]

Answer:

La fórmula empírica es C₂N₂K₅

Explanation:

La fórmula empírica es la expresión más sencilla para representar un compuesto químico e indica los elementos que están presentes y la proporción mínima en números enteros que hay entre sus átomos. A esta fórmula se le conoce también como “fórmula mínima” .

En otras palabras, la fórmula empírica muestra la proporción entre los átomos de un compuesto químico.

Si supones que tenes 100 gramos del compuesto, los porcentajes en masa indicarán los gramos de cada elemento en esos 100 gramos. Si la sustancia está compuesta por 18,4% de carbono, 21,5% de nitrógeno y 60,1% de potasio, entonce habrá 18,4 g de carbono, 21,5 g de nitrógeno y 60,1 g de potasio

Para la obtención de la fórmula empírica entonces, teniendo en cuenta la masa molecular de cada sustancia, en primer lugar se calcula el número de moles relativos de cada elemento químico:

C: 18.4 g/12 g/mol = 1.5 moles

N: 21.5 g/14 g/mol = 1.5 moles

K: 60.1 g/16 g/mol = 3.75 moles

De esta manera hallas la relación entre el número de moles de los distintos elementos, pero no estará expresada en forma de números enteros y sencillos. Para expresar la relación anterior en forma de números enteros y sencillos, divides el número de moles de cada elemento entre el número de moles menor de todos ellos.

C =  1.5 moles/ 1.5 moles = 1

N =  1.5 moles/ 1.5 moles = 1

K =  3.75 moles/ 1.5 moles = 2.5

Si no se obtiene una relación de números enteros, debes multiplicar por un número sencillo para conseguirlo. En este caso, multiplicando por dos obtienes:

C= 2

N= 2

K= 5

<u><em>La fórmula empírica es C₂N₂K₅</em></u>

6 0
3 years ago
What was the name of the super conteneit
Gekata [30.6K]

Answer:

Pangaea

Explanation:

3 0
3 years ago
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Work out the volume of 0.1 moles of chlorine gas at room temperature and pressure.
Lilit [14]

Volume of gas at room temperature = number of moles x 24 dm^3

Volume = 0.1 moles x 24 dm^3

Volume = 2.4 dm^3  (or 2400 cm^3)

5 0
4 years ago
Which atom absorbs more energy, one in which an electron moves from the second shell to the third shell or an otherwise identica
Assoli18 [71]

Answer:

identical atom in which an electron moves from the first to the third shell.

Atoms may occupy different energy states. The energy states are discrete, i.e. they occur at specific values only. Therefore an atom can only move to a new energy level if it absorbs or emits an amount of energy that exactly corresponds to the difference between two energy levels.

The lowest possible energy level that the atom can occupy is called the ground state. This is the energy state that would be considered normal for the atom.

An excited state is an energy level of an atom, ion, or molecule in which an electron is at a higher energy level than its ground state.

An electron is normally in its ground state, the lowest energy state available. After absorbing energy, it may jump from the ground state to a higher energy level, called an excited state.

3 0
3 years ago
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