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melamori03 [73]
3 years ago
14

Diseases can spread rapidly in cities. If a disease kills many people in a city but fewer in a rural area, this is an example of

Chemistry
1 answer:
Inga [223]3 years ago
5 0

Answer:

Density independent factor

Explanation:

in dense areas where people livein  very close and tight spaces

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there is a total of seventeen constitutional isomers for the molecular formula c5h13n. draw the skeletal formula of all three co
MAXImum [283]
Amines are derivatives of Ammonia (NH₃) in which atleast one hydrogen atom is replaced by an alkyl group. Amines are further classifies as;

Primary Amines:
                          In primary amines the nitrogen atom is attached to two hydrogen atoms and one alkyl group.

Secondary Amines:
                             In secondary amines the nitrogen atom is attached to two alkyl groups and one hydrogen atom.

Tertiary Amines:
                         In tertiary amines the nitrogen atom is attached to three alkyl groups, hence it has no hydrogen atom.

Below are three isomers of tertiary amines with molecular formula C₅H₁₃N.

5 0
3 years ago
1. Determine the amount concentration of calcium ions and acetate ions in a 0.80 mol/L
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Since there is one mole of Ca^2+ in calcium acetate, its concentration is 0.80 mol/L.

<h3>What is concentration?</h3>

The term concentration has to do with the amount of substance in solution. The concentration can be measured in several units. Generally, concentration is expressed in molarity, molality, mass concentration units or percentage.

Now we are asked to find the amount concentration of calcium ions and acetate ions in a 0.80 mol/L solution of calcium acetate. The formula of calcium acetate is Ca(CH3COO)2.

Thus;

Ca(CH3COO)2(aq)  ----> Ca^2+(aq) + 2CH3COO^-(aq)

It then follows that since there is one mole of Ca^2+ in calcium acetate, its concentration is 0.80 mol/L.

Learn more about concentration:brainly.com/question/10725862

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6 0
2 years ago
What is the difference between a theory and a scientific law?
Westkost [7]
Scientific laws and theories have different jobs to do. A scientific law predicts the results of certain initial conditions. ... In contrast, a theory tries to provide the most logical explanation about why things happen as they do.
6 0
3 years ago
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Hey guys, about to submit my draft for business and chemistry.
drek231 [11]

Answer:

so u can put on hot sauce to spice it up

and give it to ur teacher

8 0
3 years ago
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What particles form the nucleus of an atoms?
melomori [17]

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

  • Protons are the positively charged particles in an atom
  • Neutrons do not carry any charges.
  • Sum of the protons and neutrons gives the mass number of the atom.
7 0
3 years ago
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