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melisa1 [442]
2 years ago
9

Air is mainly a mixture of nitrogen and oxygen. Which gas is the main component?

Chemistry
2 answers:
NARA [144]2 years ago
8 0

Answer:

Nitrogen is the main component because it comprises 78% of total air while oxygen comprises 21%

.

Cloud [144]2 years ago
8 0

Answer:nitrogen

Explanation:

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3 years ago
How many grams are in 2.3 moles of calcium phosphate, Ca3(PO3)2
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6 0
3 years ago
How long will it take for a 750 mg sample of radium with a half life of 15 days to decay to exactly 68mg?
weqwewe [10]

Answer:

52 da  

Step-by-step explanation:

Whenever a question asks you, "How long to reach a certain concentration?" or something similar, you must use the appropriate integrated rate law expression.

The i<em>ntegrated rate law for a first-order reaction </em>is  

ln([A₀]/[A] ) = kt

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t_ ½ =   15 da

Step 1. Calculate the value of the rate constant.

 t_½ = ln2/k     Multiply each side by k

kt_½ = ln2         Divide each side by t_½

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Step 2. Calculate the time

ln(750/68) = 0.0462t

         ln11.0 = 0.0462t

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8 0
3 years ago
Question 116 g of sunflower oil is
Luba_88 [7]
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Explanation:

Volume = mass ÷ density

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7 0
3 years ago
24) What is momentum? *
sergiy2304 [10]

Answer:

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Symbol: p

Units: kg x m/s

Explanation:

......

6 0
3 years ago
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