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3 years ago

Which atom will gain electrons in the reaction, and how many.

Chemistry

1 answer:

Anna35 [415]3 years ago

7 0

Answer:

Most atoms do not have eight electrons in their valence electron shell. Some atoms have only a few electrons in their outer shell, while some atoms lack only one or two electrons to have an octet. In cases where an atom has three or fewer valence electrons, the atom may lose those valence electrons quite easily until what remains is a lower shell that contains an octet. Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations. Most metals become cations when they make ionic compounds.

Explanation:

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A 2.5 L container holds a sample of hydrogen gas at 291 K and 180 kPa.

netineya [11]

Answer:

The new temperature will be 565.83 K.

Explanation:

Gay Lussac's law establishes the relationship between the temperature and the pressure of a gas when the volume is constant. This law says that the pressure of the gas is directly proportional to its temperature. This means that if the temperature increases, the pressure will increase; or if the temperature decreases, the pressure will decrease.

In other words, Gay-Lussac's law states that when a gas undergoes a constant volume transformation, the ratio of the pressure exerted by the gas temperature remains constant:

$\frac{P}{T} =k$

When an ideal gas goes from a state 1 to a state 2, it is true:

$\frac{P1}{T1} =\frac{P2}{T2}$

In this case:

P1= 180 kPa
T1= 291 K
P2= 350 kPa
T2= ?

Replacing:

$\frac{180 kPa}{291 K} =\frac{350 kPa}{T2}$

Solving:

$T2=350 kPa*\frac{291 K}{180 kPa}$

T2= 565.83 K

<u><em>The new temperature will be 565.83 K.</em></u>

6 0

3 years ago

QUESTION 3

aev [14]

Bacteria can’t live without humans

4 0

3 years ago

An inexpensive and accurate method of measuring the quantity of electricity flowing through a circuit is to pass the current thr

Paha777 [63]

Total of 127.013 C of charge is passed

Given

weight of Ag solution before current has passed = 1.7854 g

weight of Ag solution after current has passed = 1.8016 g

Molecular mass of Ag = 107.86 g

Faraday's Constant = 96485

First of all we have to apply Faraday's First Law of Electrolysis i.e

m = ZQ

where

Z is propotionality constant (g/C)

Q is charge (C)

Hence,

Z = Atomic mass of substance/ Faraday's Constant

= $\frac{107.86 g}{96485 C}$

= 0.0011178 g/C

Now ,

change in mass before and after the passing of current (Δm)

Δm = 1.8016g-1.7854g

= 0.0162g

Now amount of coulombs passed = $\frac{0.142g}{0.0011178 g/C }$

amount of coulombs passed = 127.03524 C

Thus from the above conclusion we can say that amount of coulombs have passed is 127.03524 C

Learn more about Electrolysis here: brainly.com/question/16929894

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2 years ago

1000 divided by 392

svp [43]

Answer:

2.551020408163 and it keeps on going or 2 27⁄49

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3 years ago

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Question 7 of 32

sergeinik [125]

Answer:

The battery of a phone contains stores chemical energy. This energy is converted into electrical energy primarily when the phone is turned on. The chemical energy is also converted into light energy, sound energy and heat energy. With the passage of time, the energy will be changed back into the chemical energy when we will charge the phone again.

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3 years ago