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Liono4ka [1.6K]
3 years ago
12

What dose the wave carry

Chemistry
1 answer:
pogonyaev3 years ago
3 0

Answer:

Waves carry energy from one place to another.

Because waves carry energy,some waves are used for communication,eg radio and television waves and mobile telephone signals.

Explanation:

i hope it helps

that's my answer

correct me if im wrong

<h3>#<em><u>c</u></em><em><u>a</u></em><em><u>r</u></em><em><u>r</u></em><em><u>y</u></em><em><u>o</u></em><em><u>n</u></em><em><u>l</u></em><em><u>e</u></em><em><u>a</u></em><em><u>r</u></em><em><u>n</u></em><em><u>i</u></em><em><u>n</u></em><em><u>g</u></em></h3>
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You are investigating an organic compound. You discover that it is an aromatic compound often used as flavoring. What type of co
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2k+Cl2=2KCI how many grams of KCl is produced from 8.50 g of K and excess Cl2
ZanzabumX [31]

Answer:

Mass = 16.4 g

Explanation:

Given data:

Mass of K = 8.50 g

Mass of KCl produced = ?

Solution:

Chemical equation:

2K + Cl₂     →    2KCl

Number of moles of K:

Number of moles = mass/ molar mass

Number of moles = 8.50 g/ 39 g/mol

Number of moles = 0.22 mol

Now we will compare the moles of potassium and potassium chloride.

                  K         :        KCl

                  2         :          2

                0.22      :        0.22

Mass  of KCl:

Mass = number of moles × molar mass

Mass = 0.22 mol × 74.55 g/mol

Mass = 16.4 g

4 0
3 years ago
Problem Page Cobalt(II) chloride forms several hydrates with the general formula , where is an integer. If the hydrate is heated
steposvetlana [31]

The question has missing information, the complete question is:

Cobalt(II) chloride forms several hydrates with the general formula CoCl₂.xH₂O, where x is an integer. If the hydrate is heated, the water can be driven off, leaving pure CoCl₂ behind. Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 22.0%. Which hydrate is it? That is, what is x?

Answer:

CoCl₂.26H₂O

Explanation:

The molar masses of the compounds that forms the hydrate are:

Co = 59 g/mol

Cl = 35.5 g/mol

H = 1 g/mol

O = 16 g/mol

The molar mass of CoCl₂ is 130 g/mol and of H₂O is 18 g/mol, thus for the hydrate, it will be 130 + 18x g/mol.

Let's suppose 1 mol of the compound. Thus, the mass of the hydrate is: 130 + 18x, and the mass of CoCl₂ will be 130 g. Because the mass decreassed by 22.0% :

0.22*(130 + 18x) = 130

130 + 18x = 590.91

18x = 460.91

x ≅ 26

Thus, the hydrate is CoCl₂.26H₂O

7 0
4 years ago
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Answer:

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Las cada vez más dilatadas noches aumentan el protagonismo de la Luna. El satélite natural de la Tierra comenzará y acabará el mes por todo lo alto con dos brillantes lunas llenas. El mes lunar dura 29,5 días y los meses solares duran por lo menos 30, salvo febrero. Así que echen cuentas: en alguno tendrían que coincidir dos fases llenas. Por cierto, la noche del 31 es la noche de Halloween. Los disfraces de licántropo tendrán el complemento perfecto.

Según el Observatorio Astronómico Nacional, el día 1 la luna llena será a las 23:05 y el 31 a las 15:49. Que se fije una hora concreta es similar a lo que ocurre con los equinoccios: la Luna está en movimiento, no se para. Así que a partir de ese punto, el satélite comienza su siguiente fase. La luna nueva tendrá lugar el 16 de octubre a las 21:31.

A veces se observa el satélite durante el día. Si es así, significa que está en fase creciente o menguante. Este mes el cuarto menguante ocurrirá el día 10 a las 2:40. El 23 de octubre a las 15:23 será el turno del creciente.

Tanto de día como de noche, la Luna puede observarse a simple vista y sin dificultad alguna. Con unos buenos prismáticos se llegan a ver además algunos detalles de su superficie, como cráteres o “mares”. Más difícil de observar son otros fenómenos que también tendrán lugar en octubre, por ejemplo, las lluvias de estrellas. No resultarán tan llamativas como las famosas Perseidas estivales, pero siempre se puede cazar algún meteoro con la vista.

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3 years ago
Which answer below correctly identifies the type of change and the explination for the boiling of water
katrin [286]
Answer:

Physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved.

Explanation:

Water boiling results in the physical state changing from solid to gaseous water. This moment can be called boiling or vaporizing, which is the change from liquid to gaseous state by heating water. Thus, the "Boiling Point" (PE) of a substance is the temperature at which that substance changes from liquid to gaseous state and, in the case of water, is 100 ° C. When the water reaches this temperature its physical change occurs because, despite the formation of gas, the water was undergoing a state change, which means that its original properties are preserved.
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