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3 years ago

Propiedades quimicas de la plata

1 answer:

7 0

Elemento químico, símbolo Ag, número atómico 47 y masa atómica 107.870. Es un metal lustroso de color blanco-grisáceo. La plata, que posee las más altas conductividades térmica y eléctrica de todos los metales, se utiliza en puntos de contacto eléctricos y electrónicos.

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The phase change in which a substance changes from a liquid to a solid is A. freezing. B. melting. C. sublimation. D. condensati

vovangra [49]

freezing. Think of what happens when you put water in the freezer

4 0

3 years ago

How does the mass of an electron compare to the mass of a proton and a

tensa zangetsu [6.8K]

Answer:

C. The mass of an electron is much less than the mass of a proton or

a neutron.

Explanation:

When we compare the mass of an electron to that of proton or neutron, the mass of an electron is much less than the mass of a proton or a neutron.

Electrons are negatively charged particles in an atom

Protons are positively charged particles

Neutrons do not carry any charges.

The relative mass of an electron compared to that of a proton is $\frac{1}{1840}$
This is a very small value
Electrons generally have mass of 9.11 x 10⁻³¹kg
Protons weigh 1.67 x 10⁻²⁷kg

Neutrons weigh 1.68 x 10⁻²⁷kg

We can see that electrons have very small mass and this is why when calculating the mass of an atom, we use the sum of the number of protons and neutrons.

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3 years ago

The compound known as diethyl ether, commonly referred to as ether, contains carbon, hydrogen, and oxygen. A 1.376 g sample of e

hoa [83]

Answer:

The answer to your question is: C₄H₁₀O

Explanation:

Data

CxHyOz

mass sample : 1.376 g

mass CO₂ = 3.268 g

mass H₂O = 1.672 g

Process

Reaction

CxHyOz + O₂ ⇒ CO₂ + H₂O

1.- Calculate the moles and mass of carbon

Molecular mass CO₂ = 44g

44 g of CO₂ -------------- 12 g of C

3.268 g of CO₂ -------- x

x = (3.268 x 12) / 44

x = 0.891 g of Carbon

12 g of carbon ----------- 1 mol

0.891 g of C ---------- x

x = (0.891 x 1) / 12

x = 0.0743 moles of carbon

2.- Calculate the moles and mass of hydrogen

18 g of water --------------- 2 g of H

1.672 g of H₂O ------------ x

x = (1.672 x 2) / 18

x = 0.186 g of hydrogen

1 g of hydrogen ------------ 1 mol of H

0.186 g of H ------------ x

x = (0.186 x 1) / 1

x = 0.186 moles of H

3.- Calculate the mass of Oxygen and its moles

Mass of Oxygen = 1.376 - 0.891 - 0.186

= 0.299 g of O₂

Moles of Oxygen

16 g of Oxygen ---------------- 1 mol

0.299 g of O ----------------- x

x = (0.299 x 1) / 16

x = 0.019 moles of Oxygen

4.- Divide by the lowest number of moles

Carbon 0.0743/ 0.019 = 3.9 ≈ 4.0

Hydrogen 0.186/ 0.019 = 9.7 = 10

Oxygen 0.019/ 0.019 = 1

5.- Write the empirical formula

C₄H₁₀O

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3 years ago

An FM radio station broadcast at a frequency of 98.5 MHz. What is the wavelength of the station’s broadcast signal?

Troyanec [42]

Answer:

(1 MHz = 106 s -1)

Explanation:

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3 years ago

Someone please help will mark as brainliest

d1i1m1o1n [39]

Answer:

solution:-a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility.

solute:-is a substance, usually a solid, that is dissolved in a solution, which is usually a liquid.

solvent:-substance, ordinarily a liquid, in which other materials dissolve to form a solution.

polar molecule:-is a molecule in which one end of the molecule is slightly positive, while the other end is slightly negative.

Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

concentration refers to the amount of a substance in a defined space.

Explanation:

6 0

3 years ago

Propiedades quimicas de la plata​

Propiedades quimicas de la plata