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SVEN [57.7K]
2 years ago
11

a microscope is a labolatory tool that is used to__________ this allowed scientists to ____________ we cannot see using our nake

d eyes such as _____ protists ______and___________ the main parts of a microscope that magnifies are the __________ and the ___________. the__________ serves as the light source. in order to see he specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the __________ and _______. other parts of the microscope such as the______. ______ and _________ serves as a primary support for device
Chemistry
1 answer:
Whitepunk [10]2 years ago
8 0

Answer:

See the answer below

Explanation:

A microscope is a laboratory tool that is used to <u>magnify the image of objects</u> This allowed scientists to <u>study tiny organisms that cannot be seen with an ordinary eye</u>. We cannot see some organisms using our naked eyes, such as <u>bacteria,</u> protists, <u>viruses,</u> and <u>microscopic fungi.</u> The main parts of a microscope that magnifies are the <u>ocular</u> and the <u>objective lenses</u>. the <u>lamp </u>serves as the light source. In order to see the specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the <u>coarse</u> and <u>the fine adjustment knobs</u>. other parts of the microscope such as the <u>base</u> and <u>the arm</u> serve as primary support for the device.

The microscope is primarily designed to magnify the image of objects and, thus, enables one to see objects that cannot ordinarily be seen with the naked eyes. It magnifies objects using a system of lenses in the ocular and the eyepiece. Microscopic organisms such as protists, bacteria, viruses, microscopic fungi and algae can be seen using the microscope. Slides of objects are prepared and placed on the stage of the microscope and the coarse/fine adjustment knobs used to adjust the stage in order to bring the image on the slide into focus through the ocular. A lamp at the base provides the light source for the light microscope while other parts such as the arm, the head, and the base provide supportive functions for the microscope,

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An organelle that is not found in this illustration of a cell would be
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The answer is cell wall

Explanation:

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2 years ago
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Consider a saturated solution formed when 17.5 g of a solute dissolve in 28.3 g of a solvent, giving a total solution volume of
STALIN [3.7K]

Answer:

a) 38.2 % mass

b) 61.8 g solute/100 g solvent

c) 1.65 g/mL

Explanation:

Given the data:

mass of solute = 17.5 g

mass of solvent= 28.3 g

total solution volume= 27.8 mL

a)- mass percent= mass of solute/mass of solution x 100

mass of solution = mass solute + mass solvent = 17.5 g + 28.3 g = 45.8 g

mass % = 17.5 g/45.8 g x 100 = 38.2 % mass

b)- solubility = grams of solute/ 100 g solvent

                    = 17.5 g x (100 g /28.3 g solvent) = 61.8 g solute/100 g solvent  

c)- density = massof solution/total volumesolution  = 45.8 g/27.8 mL = 1.65 g/mL

7 0
2 years ago
A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 % fluorine and 49.49 % iron. When th
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Answer: 0,4278g of F and 0,4191g of Fe

Explanation: it's possible to calculate the mass of each element by multiplying the percentage (decimal) of the element by the mass of the compound.

For Fluorine (F)

0,847g * 0,5051 = 0,4278g of F

For iron (Fe)

0,847 * 0,4949 = 0,4191g of Fe

This is determined because even when the compound is decomposed, due to conservative law of mass, the decomposition process do not affect the amount of matter, so the mass of the elements remain even if they are separated from the original molecule.

At the end, the sum of the elements masses should be the total mass of the compound.

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his is the chemical formula for chromium(III) nitrate: . Calculate the mass percent of oxygen in chromium(III) nitrate. Round yo
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Answer:

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Explanation:

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The formula for chromium(III) nitrate is Cr(NO_3)_3

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1 mole of chromium(III) nitrate contains 9 moles of oxygen

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\%\ Composition\ of\ iron=\frac{144}{238.011}\times 100

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