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NeX [460]
3 years ago
12

What was the name of the disease that killed nearly half the people of Europe?

Chemistry
2 answers:
Licemer1 [7]3 years ago
7 0
The answer is the plague, or the black death
kaheart [24]3 years ago
5 0
Bubonic plague or black plague

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What is the concentration of a solution prepared by adding 50.0 mL of a 3.0 M HCl solution to a 250 mL volumetric flask and fill
Olenka [21]

To solve this we use the equation, 

M1V1 = M2V2

<span>where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.</span>

<span>
</span>

<span>3.0 M (50 mL) = M2 (250 mL)</span>

<span>M2 = 0.6 M</span>

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3 years ago
List the following particles in size order, from biggest to smallest?
galben [10]

Its B it isn't incorrect

8 0
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What are the following products for this equation FeN + Ca
irina1246 [14]
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6 0
3 years ago
A sample of air at 58.6 kPa is expanded from 250 mL to 655 mL. If thetemperature remains constant, what is the final pressure in
kati45 [8]

Answer:

<h2>22.366 kPa</h2>

Explanation:

The final pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the final pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

From the question

58.6 kPa = 58600 Pa

We have

P_2 =  \frac{58600 \times 250}{655}  =  \frac{14650000}{655}  \\  = 22366.4122... \\  = 22366

We have the final answer as

<h3>22.366 kPa</h3>

Hope this helps you

3 0
3 years ago
An avocado contains 234 Calories, with 21 grams of fat. Calculate the percent of Calories from fat.
tatyana61 [14]
36% of calories from fat
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