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2 years ago

Identify the reasons that cities boomed during the Middle Ages.

Chemistry

2 answers:

atroni [7]2 years ago

7 0

Answer:

Explanation:

The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.

Mazyrski [523]2 years ago

4 0

Answer:

Explanation:

By the High Middle Ages, towns were growing again. One reason for their growth was improvements in agriculture. Farmers were clearing forests and adopting better farming methods. As a result, they had a surplus of crops to sell in town markets.

Also, as the amount of trade increased between Europe and other continents. Trade began to grow in Europe after the Crusades. Most of this trade was controlled by merchants from Italy and Northern Europe.

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What is the atomic mass of a carbon isotope that has 6 protons and 7 neutrons?

DedPeter [7]

The atomic mass of a carbon isotope that has 6 protons and 7 neutrons is<u> </u><u>13</u>

Explanation:

Remember that whilst the atomic number represents the number of protons in an atom, the mass number represents the summation of protons and neutrons particles in the atomic nuclei. Therefore, in this case, the carbon will have a mass number of;

6 + 7 = 13

Isotopes of an element usually have the same atomic number but different mass numbers -because they have slightly different numbers of neutrons. An example is isotopes of Carbon; C-14 and C-12

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3 years ago

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A student weighed out a 2.055 g sample of a cobalt chloride hydrate, ConClmpH2O, where n, m, and p are integer values to be dete

topjm [15]

The given mass of cobalt chloride hydrate = 2.055 g

A sample of cobalt chloride hydrate was heated to drive off waters of hydration and the anhydrate was weighed.

The mass of anhydrous cobalt chloride = 1.121 g anhydrate.

The mass of water lost during heating = 2.055 g - 1.121 g = 0.934 g

Converting mass of water of hydration present in the hydrate to moles using molar mass:

Mass of water = 0.934 g

Molar mass of water = 18.0 g/mol

Moles of water = $0.934 g * \frac{1 molH_{2}O }{18 g H_{2}O } =0.0519 mol H_{2}O$

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3 years ago

Why is the moon visible?

katrin2010 [14]

It is C. because the sunlight bounces off the moon causing it to be visible only at night.

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3 years ago

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Breathing equipment used by rescue workers needs to capture the CO2 the humans breath out and produce O2 for them to breath in,

const2013 [10]

Answer: $4KO_2+2CO_2\rightarrow 2K_2CO_3+3O_2$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation for reaction of potassium superoxide with carbon dioxide to produce oxygen and potassium carbonate will be:

$4KO_2+2CO_2\rightarrow 2K_2CO_3+3O_2$

8 0

2 years ago

This question is about metal oxides. When sodium is heated in oxygen, sodium oxide is produced.

vodomira [7]

Answer:

This is very easy Cuz We have 2Na2O We have O2 so thats molecule of Oxygen and its same on product We need to balance Na on start We have 1 on product We have 2 so Just put 2 at start....

Explanation:

Sorry for bad english not my first language :(

2Na+O2-->2Na20

5 0

3 years ago