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3 years ago

The Concentration of C6H12O6 May be represented as?

Chemistry

2 answers:

Amiraneli [1.4K]3 years ago

6 0

Answer:

A 12 oz Coca Cola contains 39g of sugar or C6H12O6.

To calculate for the molarity of sugar in the soda, convert 39 grams of sugar to moles sugar:

39g/ 180.16 g/mol = 0.216 mol sugar

then, convert 12 oz to L:

12oz / (1oz/0.02957L) = 0.35484 L

therefore the concentration of sugar in the soda is:

M = mol sugar / L sol'n

= 0.216 mol sugar / 0.35484 L

= 0.609 M

Explanation:

spin [16.1K]3 years ago

3 0

Answer:

Explanation:

therefore the concentration of sugar in the soda is:

M = mol sugar / L sol'n

= 0.216 mol sugar / 0.35484 L

= 0.609 M

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40 drops of blood in a tube that holds 2 mL

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3 years ago

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The properties of an unknown substance can be compared to the properties of a known substance to identify the unknown substance.

Nitella [24]

Answer: Physical properties are those that can be determined or measured without changing the composition or identity of the substance. These properties include color, odor, taste, density, melting point, boiling point, conductivity, and hardness.

Explaination:

By using Physical properties unknown substance can be identified as it involves determination of a substance with out changing their composition or property include color, odor, taste, density, melting point etc.

What are the difference between physical and chemical property ?

Chemical properties can be observed or measured when a substance undergoes any type of changes chemically while Physical properties can be observed without changing anything.

In chemical property, chemical reaction is conducted to show the property of the substance while in physical property No chemical reaction occur.

Chemical properties related to chemical bonds while Physical properties do not have such a relationship.

Chemical properties include radioactivity, toxicity, flammability, heat of combustion, etc. while physical properties include Molecular weight, boiling point, melting point, freezing point, volume, mass, length, density shape, solubility, etc.

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6 months ago

Lithium β is a solid phase of lithium still unknown to science. The only difference between it and ordinary lithium is that Lith

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Answer:

The density of Lithium β is 0.5798 g/cm³

Explanation:

For a face centered cubic (FCC) structure, there are total number of 4 atoms in the unit cell.

we need to calculate the mass of these atoms because density is mass per unit volume.

Atomic mass of Lithium is 6.94 g/mol

Then we calculate the mass of four atoms;

$= 4 .atoms*\frac{1.mole}{6.022 X10^{23} .atoms} *\frac{6.94g}{mole} = 4.6097 X10^{-23} g$

⇒next, we estimate the volume of the unit cell in cubic centimeter

given the edge length or lattice constant a = 0.43nm

a = 0.43nm = 0.43 X 10⁻⁹ m = 0.43 X 10⁻⁹ X 10² cm = 4.3 X 10⁻⁸cm

Volume of the unit cell = a³ = (4.3 X 10⁻⁸cm)³ = 7.9507 X 10⁻²³ cm³

⇒Finally, we calculate the density of Lithium β

Density = mass/volume

Density = (4.6097 X 10⁻²³ g)/(7.9507 X 10⁻²³ cm³)

Density = 0.5798 g/cm³

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3 years ago

How many grams of ethylene glycol (c2h6o2) must be added to 1.00 kg of water to produce a solution that freezes at -5.00oc? (kf

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Answer: 167 g

Explanation:

1) The depression of the freezing point of a solution is a colligative property ruled by this equation:

ΔTf = i × m × Kf

Where:

ΔTf is the decrease of the freezing point of the solvent due to the presence of the solute.

i is the Van't Hoof factor and is equal to the number of ions per each mole of solute. It is only valid for ionic compounds. Here the solute is not ionice, so you take i = 1

Kf is the molal freezing constant and is different for each solvent. For water it is 1.86 m/°C

2) Calculate the molality (m) of the solution

ΔTf = i × m × Kf ⇒ m = ΔTf / ( i × Kf) = 5.00°C / 1.86°C/m = 2.69 m

3) Calculate the number of moles from the molality definition

m = moles of solute / kg of solvent ⇒ moles of solute = m × kg of solvent

moles of solute = 2.69 m × 1.00 kg = 2.69 moles

4) Convert moles to grams using the molar mass

molar mass of C₂H₆O₂ = 62.07 g/mol

mass in grams = number of moles × molar mass = 2.69 moles × 62.07 g/mol = 166.97 g ≈ 167 g

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2 years ago

Consider the unbalanced equation for aluminum and oxygen producing aluminum oxide: Al + O₂ → Al₂O₃. Which of the following shows

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Answer:

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3 years ago