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nikklg [1K]
3 years ago
13

How do I study Chemistry efficiently?

Chemistry
1 answer:
TEA [102]3 years ago
5 0
Review and Study Material Before Going to
Class.

Seek Understanding.

Take Good Notes.

Practice Daily.

Take Advantage of Lab Time.

Use Flashcards.

Use Study Groups.

Break Large Tasks Into Smaller Ones.
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Which of the following is true of a heterogeneous mixture?
tia_tia [17]
A, a heterogeneous mixture is a mixture where all the particles are not made up of one uniform composition. you can distinguish the different particles
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Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.
kherson [118]

Answer:

The partial pressure of the other gases is 0.009 atm

Explanation:

Step 1: Data given

Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules and 1% of other gases.

The atmospheric pressure = 0.90 atm

Step 2: Calculate mol fraction

If wehave  100  moles of air, 78 moles will be nitrogen,

21  moles will be  oxygen, and  1  mol will be other gases.

Mol fraction = 1/100 = 0.01

Step 3: Calculate the partial pressure of the other gases

Pgas = Xgas * Ptotal

⇒ Pgas = the partial pressure = ?

⇒ Xgas = the mol fraction of the gas = 0.01

⇒Ptotal = the total pressure of the pressure = 0.90 atm

Pgas = 0.01 * 0.90 atm

Pgas = 0.009 atm

The partial pressure of the other gases is 0.009 atm

4 0
3 years ago
HELP PLEASE!
tia_tia [17]

Vocabulary. Balanced chemical equation: A chemical equation in which the number of each type of atom is equal on the two sides of the equation.

Hope I helped! (´▽`)

__________________________________________________________

単語。平衡化学反応式:各タイプの原子の数が方程式の両側で等しい化学反応式。

私が助けてくれたらいいのに!(´▽`)

5 0
3 years ago
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How many moles of lithium nitrate<br> (LINO3) are in 256 mL of a 0.855 M<br> solution?
sweet [91]

Answer:

There are 0.219 mol of LINO3

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3 years ago
An object has a mass of 4 grams and a volume of 2 cm^3.what is the density of the object?
stellarik [79]

Answer:

2.0 grams per cubic centimeter

Explanation:

(You can refer to the DMV triangle to help you solve this!)

Density = Mass/Volume

Density = 4.0g/2.0cm3

Density = 2.0g/cm3

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

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3 years ago
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