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3 years ago

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What are the 6 branches of chemistry? With the definition and examples.

1 answer:

netineya [11]3 years ago

5 0

Answer:

Listed below

Explanation:

Analytical chemistry: using quality and quantity observations to identify and measure physical and chemical properties of substances.EXAMPLE: medical diagnosis

Physical chemistry: Combination of physics and chemistry. EXAMPLE:nitric acid eating through wood.

Organic chemistry: Studying of compounds containing carbon in them. EXAMPLE: there are different products that make use of this type of chemistry for example perfumes,gasoline and many more.

Inorganic chemistry: Studies materials without carbon i them. EXAMPLE: Metals AND Gases.

Biochemistry: studies chemical processes occurring in living organisms. EXAMPLE: Human bodies and muscles

Theoretical chemistry: provides explanations to chemical and physical observation. EXAMPLE: Concepts of chemical reactions

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A perfect cube of aluminum metal was found to weigh 20.00 g. The density of aluminum is 2.7 g/ml. What are the dimensions of the

denis23 [38]

Answer:

Height = 1.9493 cm

Width = 1.9493 cm

Depth = 1.9493 cm

Solution:

Data Given:

Mass = 20 g

Density = 2.7 g/mL

Step 1: Calculate the Volume,

As,

Density = Mass ÷ Volume

Or,

Volume = Mass ÷ Density

Putting values,

Volume = 20 g ÷ 2.7 g/mL

Volume = 7.407 mL or 7.407 cm³

Step 2: Calculate Dimensions of the Cube:

As we know,

Volume = length × width × depth

So, we will take the cube root of 7.407 cm³ which is 1.9493 cm.

Hence,

Volume = 1.9493 cm × 1.9493 cm × 1.9493 cm

Volume = 7.407 cm³

4 0

3 years ago

suter [353]

Answer: The possible molecular formula will be $CO_2$

Explanation:

Mass of C= 27.3 g

Mass of O = 72.7 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{27.3g}{12g/mole}=2.275moles$

Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{72.7g}{16g/mole}=4.544moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{2.275}{2.275}=1$

For O = $\frac{4.544}{2.275}=2$

The ratio of C : O = 1: 2

Hence the empirical formula is $CO_2$

The possible molecular formula will be= $n\times CO_2$

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3 years ago

I need help with this

marshall27 [118]

What is it you need help on? there is nothing here????

ANSWER:

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3 years ago

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Why is the Chemical symbol for lead Pb?? ^__^ i HATE the perdiotic** table!!

tatuchka [14]

Cause latin name of Pb is plumbum.
The same K - potassium - latin name is kalium.

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3 years ago

Which of the following represents a phase change? A. Melting B. Crushing C. Expanding D. Burning

Fantom [35]

Melting is an example of phase change

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3 years ago