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mixas84 [53]
3 years ago
11

What information is shown in an atom’s electron dot diagram? the number of shells an atom has the number of electrons in each sh

ell of an atom the number of valence electrons an atom has the number of valence shells of an atom
Chemistry
2 answers:
tatiyna3 years ago
4 0
The number of valence electrons an atom has  
Aleks [24]3 years ago
3 0

The answer on Edge is,

C. the number of valence electrons an atom has

Please vote <u>brainliest</u> (:

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NEED HELP! An experiment _____. must always be done in a laboratory is best done if only one variable is tested for at a time ca
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Answer:

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Magnesium oxide decomposes into magnesium and oxygen. if 16.12 g of magnesium oxide decomposes to form 9.72 g of magnesium, what
marysya [2.9K]

The mass of oxygen gas is released in the reaction of decomposition  of magnesium oxide  6.4 grams

calculation

mass of oxygen=mass of  magnesium oxide -mass of magnesium produced

that is  16.12-9.72=6.4 grams

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Balance this equation-<br> Fe + O2 Fe3 O4
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3Fe + 2O2 —- Fe3 + O4
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3 years ago
At what temperature does a gas at 1.00 atm and 20 degree Celsius have a pressure of 4.00 atm.
vfiekz [6]

Answer:

P1 =4 atm

T1= 20°C

P2=1 atm

T2=?

According to Gay-Lussac's Law or Third Gas Law,

P1T2=P2T1

4×T2=1×20

T2= 20/4

T2= 5°C

Answer At 5°C temperature does a gas at 1.00 atm !

7 0
3 years ago
A 3L sample of an ideal gas at 178 K has a pressure of 0.3 atm. Assuming that the volume is constant, what is the approximate pr
harina [27]

Answer: The approximate pressure of the gas after it is heated to 278 K is 0.468 atm.

Explanation:

Given: T_{1} = 178 K,      P_{1} = 0.3 atm

T_{2} = 278 K,           P_{2} = ?

According to Gay Lussac law, at constant volume the pressure of a gas is directly proportional to the temperature.

Formula used to calculate the pressure is as follows.

\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\

Substitute the values into above formula is as follows.

\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\\frac{0.3 atm}{178 K} = \frac{P_{2}}{278 K}\\P_{2} = 0.468 atm

Thus, we can conclude that the approximate pressure of the gas after it is heated to 278 K is 0.468 atm.

3 0
3 years ago
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