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-Dominant- [34]
2 years ago
8

During a chemical reaction, the amount of energy (2 points)

Chemistry
1 answer:
andreyandreev [35.5K]2 years ago
6 0
Answer is b your welcome
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A sample of methane occupies a volume of 174.0 mL at 25 C and exerts a pressure of 1030.0 mmHg if the volume of the gas is allow
PolarNik [594]

Answer:

The pressure will be 0,37 atm.

Explanation:

We use the Boyle Mariotte´s formula,where for a given mass of gas, at constant temperature, the pressure and temperature vary inversely proportionally. We see here that the initial and final temperature does not vary (298K).

We convert the unit Celsius into Kelvin (0 ° C = 273K) and the unite mmHg into atm (760mmHg=1 atm):

25°C= 25+273=298K   ; (1060mmHgx 1 atm)/760mmHg)=1,39 atm.

We convert unit of volume from ml to L: 174/1000=0,174L and 650/1000=0,650L

P1xV1= P2xV2

1,39 atm x 0,174L =P2 x0,650L

P2= (1,39 atm x 0,174L)/0,650L= 0,37 atm

4 0
3 years ago
Read 2 more answers
Describe how the size of sediment particles affects their movement during deflation.
Oksi-84 [34.3K]
The larger the piece the longer it will take to break down. This is because it has more mass that needs to be broken down.
6 0
3 years ago
The shielding of electrons gives rise to an effective nuclear charge, Zeff, which explains why boron is larger than oxygen. Esti
nadezda [96]

<span>
</span>The solution would be like this for this specific problem:

<span> (atomic number) - (core electrons)</span> 

Boron:

Atomic number: 5 
Core electrons: 2

Boron will have the following: 2 core electrons and 3 valence electrons.
(atomic number) - (core electrons)------> (5) - (2) = +3 

<span>
</span><span>Oxygen: </span><span>
<span>Atomic number: 8 </span>
<span>Core electrons: 2 </span></span>

<span>Boron will have the following: 2 core electrons and 6 valence electrons. </span><span>
<span>(atomic number) - (core electrons)------> (8) - (2) = +6 |

So the answer would be +3 and +6</span>.</span><span>

I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

3 0
3 years ago
Describe the difference between the terms "mass number” and “atomic mass”.
mrs_skeptik [129]

Answer:There is a difference between the meanings of the chemistry terms atomic mass and mass number. One is the average weight of an element and the other is the total number of nucleons in the atom's nucleus. ... The mass number is a count of the total number of protons and neutrons in an atom's nucleus

Explanation:

4 0
2 years ago
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Helpppp:(((( im stuck:/
Brilliant_brown [7]

Answer:

I think its the third one.

Explanation:

Single cell organisms are still alive.

7 0
2 years ago
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