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2 years ago

The ionians learned how to use mollusks to dye wool from the

Chemistry

1 answer:

Firdavs [7]2 years ago

8 0

The right answer is phoenicians.

The Phoenicians are an ancient people from the cities of Phenicia, which roughly corresponds to present-day Lebanon. It has often been related to the Greek word phoinix, "purple red", which could refer to the tanned skin color of the Phoenicians, or to one of their most famous productions, fabrics dyed purple.

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1. Calculate the molarity of a sugar solution if 4 liters of the solution contains 8 moles of sugar

klio [65]

Answer:

The molarity of a sugar solution is 2 M.

Explanation:

Molarity is a concentration measure that expresses the moles of solute per liter of solution. In this case it is calculated with the simple rule of three:

4 L of solution--------8 moles of sugar

1 L of solution ------x= (1 L of solution x 8 moles of sugar)/4 L of solution

x=2 moles of sugar---> The solution is 2M

8 0

2 years ago

Sodium thiosulfate (Na2S2O3), photographer’s

vova2212 [387]

3Na2S2O3 + AgBr ------>Na5[Ag(S2O3) 3] +NaBr

from equation 3 mol 1 mol

given x mol 0.10 mol

x= (3*0.10)/1=0.30 mol Na2S2O3

Answer: 0.30 mol Na2S2O3

3 0

2 years ago

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The infections that people get while they are in hospitals are commonly resistant to multiple drugs. What is a reason for the in

Vlada [557]

Explanation:

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3 0

2 years ago

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Olive oil has a density of 0.92g/ml. How much would 1.0 Liter of olive oil weigh in grams?

Julli [10]

Answer:

9.2x10²g

Explanation:

Data obtained from the question include the following:

Density = 0.92g/ml

Volume = 1L = 1 x 1000 = 1000mL

Mass =..?

Density is simply defined as the mass of the substance per unit volume of the substance. Mathematically it can be represented as:

Density = Mass /volume.

Mass = Density x volume

Mass = 0.92 x 1000

Mass = 9.2x10²g.

Therefore, 1L of olive will weigh 9.2x10²g.

5 0

2 years ago

Functional group and bond hybridization of vanillin

lana66690 [7]

Vanillin is the common name for 4-hydroxy-3-methoxy-benzaldehyde.

See attached figure for the structure.

Vanillin have 3 functional groups:

1) aldehyde group: R-HC=O, in which the carbon is double bonded to oxygen

2) phenolic hydroxide group: R-OH, were the hydroxyl group is bounded to a carbon from the benzene ring

3) ether group: R-O-R, were hydrogen is bounded through sigma bonds to carbons

Now for the hybridization we have:

The carbon atoms involved in the benzene ring and the red carbon atom (from the aldehyde group) have a sp² hybridization because they are involved in double bonds.

The carbon atom from the methoxy group (R-O-CH₃) and the blue oxygen's have a sp³ hybridization because they are involved only in single bonds.

7 0

2 years ago