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Harman [31]
2 years ago
9

A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?

Chemistry
1 answer:
VLD [36.1K]2 years ago
7 0

Answer:

it will turn blue black to any substance

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An aqueous potassium carbonate solution is made by dissolving 5.51 moles of K 2 CO 3 in sufficient water so that the final volum
ad-work [718]

Answer:

1.67mol/L

Explanation:

Data obtained from the question include:

Mole of solute (K2CO3) = 5.51 moles

Volume of solution = 3.30 L

Molarity =?

Molarity is simply the mole of solute per unit litre of the solution. It can be expressed mathematically as:

Molarity = mole of solute /Volume of solution

Molarity = 5.51 mol/3.30 L

Molarity = 1.67mol/L

Therefore, the molarity of K2CO3 is 1.67mol/L

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3 years ago
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Answer:

2 Answers. The column is filled with the carrier (liquid or gas) before the sample is injected. Thus if there is no interaction between the sample and the column, then the fastest that the sample can get to the detector is the dead time denoted by tM in the diagram.

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3 years ago
Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75.
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i wish i know

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3 years ago
Calculate the molar mass of menthol, C10H20O
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C10H200

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The molecular formula C10H20O (molar mass : 156.27 g/mol) may refer to: Citronellol. Decanal.

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Definition of enthalpy
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 Thermodynamic quantity equivalent to the total heat content of a system It is equal to the internal energy of the system plus the product of pressure and volume
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