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photoshop1234 [79]
3 years ago
15

What is the most abundant gas in Earth's present day atmosphere?

Chemistry
1 answer:
larisa86 [58]3 years ago
3 0
Nitrogen and oxygen hope I help you with that :p
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What type of bond (Ionic, Covalent or Metallic) would be created when carbon bonds with bromine?
Alik [6]

Answer:

Covalent bond

Explanation:

(pls give me brainliest) <3

7 0
3 years ago
The following is known as the thermite reaction: 2Al(s)+Fe2O3(s)→Al2O3(s)+2Fe(s) This highly exothermic reaction is used for wel
Colt1911 [192]

Answer:

\Delta H_{rxn}=-847.6\ KJ/mol.

Explanation:

The balanced chemical equation is:

2Al(s)+Fe_2O_3(s)-->Al_2O_3+2Fe(s)

Now, standard values of \Delta H_f\ of\ all\ participants\ of\ reaction.

\Delta H_f(Al_2O_3)=-1669.8\ KJ/mol\\\Delta H_f(Fe_2O_3)=-822.2\ KJ/mol\\\Delta H_f(Al(s))=0\ KJ/mol\\\Delta H_f(Fe(s))=0\ KJ/mol\\

Now, We know \Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}

Putting all values of \Delta H_f to above equation.

We get,

\Delta H_{rxn}=-847.6\ KJ/mol.

Hence, this is the required solution.

6 0
3 years ago
How many liters are equal to 8 megaliters (ML)?
Reika [66]

Answer:

8000000 litres

Explanation:

General formula,

→ 1 megaliter = 1000000 litres

Then 8 megaliters will be,

→ 8 × 1000000

→ [ 8000000 litres ]

Hence, the solution is 8000000 L.

7 0
2 years ago
How much time will it take for a bug to travel 5 meters across the floor if it is traveling at 1m/s
NISA [10]
One meter per second
We have five meters
It's one meter per one second.
Five times one.
Five meters in five seconds.
Unless by "m" you mean miles, in which I don't know.
8 0
3 years ago
How does a full octet affect trends among the noble gases?
shutvik [7]
The answer is that a full octet makes the noble gases nonreactive. Hope this helps
8 0
3 years ago
Read 2 more answers
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