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Juli2301 [7.4K]
3 years ago
5

Which of these elements are you least likely to find in nature as a pure element (that is, not combined with any other elements

in a compound)? Use the periodic table to answer the question. gold (Au) oxygen (O) argon (Ar) sodium (Na)
Chemistry
2 answers:
Delvig [45]3 years ago
7 0
The answer is sodium (Na)

<em>Let me know if u have anymore questions ☺</em>
Pani-rosa [81]3 years ago
7 0

Answer: sodium Na

Explanation:

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What are the two different types of ocean currents, and how are they formed?
suter [353]

Answer:

Explanation:

There are two main types of ocean currents: currents driven mainly by wind and currents mainly driven by density differences. Density depends on temperature and salinity of the water. Cold and salty water is dense and will sink. Warm and less salty water will float.

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3 years ago
Un mol de amoniaco Tiene una masa molar de 17 g y ocupa un volumen de 22.4 l qué volumen ocupa el 50 g amoniaco en condiciones n
mr_godi [17]

Answer:

V  = 65.81 L

Explanation:

En este caso, debemos usar la expresión para los gases ideales, la cual es la siguiente:

PV = nRT  (1)

Donde:

P: Presion (atm)

V: Volumen (L)

n: moles

R: constante de gases (0.082 L atm / mol K)

T: Temperatura (K)

De ahí, despejando el volumen tenemos:

V = nRT / P   (2)

Sin embargo como estamos hablando de condiciones normales de temperatura y presión, significa que estamos trabajando a 0° C (o 273 K) y 1 atm de presión. Lo que debemos hacer primero, es calcular los moles que hay en 50 g de amoníaco, usando su masa molar de 17 g/mol:

n = 50 / 17 = 2.94 moles

Con estos moles, reemplazamos en la expresión (2) y calculamos el volumen:

V = 2.94 * 0.082 * 273 / 1

<h2>V = 65.81 L</h2>
4 0
3 years ago
Fill in the blank questions usually require
TiliK225 [7]
The answer is a because a fill in the blank is always just one word
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2 years ago
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For metalloids on the periodic table, how do the group number and the period number relate?
Studentka2010 [4]

Answer : The correct option is A.

Explanation :

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The relation between the group number and period number of metalloid is that the lower the group number, the lower the period numbers and the metalloids are found in a diagonal moving down from left to right in the periodic table.

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3 years ago
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How many atoms of magnesium metal are needed to produce 3.87 moles of magnesium oxide
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Answer:

48.42g of Mg

Explanation:

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2 years ago
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