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Rufina [12.5K]
3 years ago
10

Which of these facts best illustrates why regulation of alcohol consumption is necessary

Chemistry
1 answer:
exis [7]3 years ago
4 0

So that people don’t break laws or drive under the influence.

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Identify each of the atomic models described here. Atoms are indivisible spheres. plum pudding model Dalton model Bohr model
mamaluj [8]

Atoms are indivisible spheres-Dalton model

John Dalton was the first to propose a theory to describe matter. As per Dalton's model, all matter is composed of atoms which resemble tiny 'ball-like' structures that are indivisible.

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In the Polyacrylamide and Agarose Gels lab, when working with your protein or DNA sample you must wear:
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It’s a. All of these, you’re welcome
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A substance is highly malleable and has a shiny luster. Which of the following best explains the probable position of the substa
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The answer is D only metals are shiny and highly malleable
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3 years ago
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Can someone help me pls
Inessa [10]

Answer:

The heat would flow from the hot solid to the cool solid until all temperatures are near equal.

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3 years ago
How does 0.5 m sucrose (molecular mass 342) solution compare to 0.5 m glucose (molecular mass 180) solution?
mash [69]

Answer : Both solutions contain 3.011 X 10^{23} molecules.

Explanation : The number of molecules of 0.5 M of sucrose is equal to the number of molecules in 0.5 M of glucose. Both solutions contain 3.011 x 10^{23} molecules.

Avogadro's Number is  N_{A} =  6.022 X 10^{23} which represents particles per mole and particles may be typically molecules, atoms, ions, electrons, etc.

Here, only molarity values are given; where molarity is a measurement of concentration in terms of moles of the solute per liter of solvent.

Since each substance has the same concentration, 0.5 M, each will have the same number of molecules present per liter of solution.

Addition of molar mass for individual substance is not needed. As if both are considered in 1 Liter they would have same moles which is 0.5.

We can calculate the number of molecules for each;

Number of molecules  = N_{A} X M;

∴  Number of molecules =  6.022 X 10^{23} X 0.5 mol/L X 1 L which will be  = 3.011 X 10^{23}

Thus, these solutions compare to each other in that they have not only the same concentration, but they will have the same number of solvated sugar molecules. But the mass of glucose dissolved will be less than the mass of sucrose.

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3 years ago
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