Answers
Answer:
37 negative charges.
Explanation:
We're being asked to determine how many negative charges a drop contains from an oil drop experiment where the total charge was 5.93x10-18 C. The drop contains 37 negative charges.
It was stated and identified that we are to attempt question #51 alone.
From the given information;
The total charge on an oil drop = 5.93 × 10⁻¹⁸ C
According to Oil drop experiment carried out by Robert Milliken in (1910);
In the oil drop laboratory experiment, It was possible for Him to substitute oil for water (because water quickly evaporate). Robert Milikan adjusted the electrical voltage among the two metal plates while the oil drop continues to drop until it stopped. When the drop was stopped, the gravitational downward force on the oil drop was equivalent to the electrical upward force on the charges thereby enabling Robert Millikan to be able to estimate the electrical charge drop.
Robert Milliken identified that the magnitude of a single negative electron charge is:
= 1.6 × 10⁻¹⁹ C
∴
If in an experiment, the total charge = 5.93 × 10⁻¹⁸ C
Then;
The number of negative charges in the oil drop can be calculated as;
[tex]\mathbf{=\dfrac{5.93 \times 10^{-18}}{1.6 \times 10^{-19}}}[/tex]
= 37.063 negative charges
Therefore, we can conclude that the numbers of negative charges contained in the total drop = 37.063.
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Related Questions
Which statement best describes how to predict the formula of a stable ionic compound? Use the same number of cations as anions so that the compound is neutral. Use more cations than anions so that the compound is positively charged. Use enough cations and anions so that the total charge is zero. Use fewer cations than anions so that the compound is negatively charged.
IT's C
Answers
Answer:
Option C: Use enough cations and anions so that the total charge is zero
Explanation:
In a stable ionic compound, to get a predict the formula, the positive and negative ions on one side need to cancel out so that the compound becomes neutral.
For example, let's take consider an ionic compound known as Potassium Chloride. It has a formula KCl. Now , breaking it down, the charges will be; K+ and Cl-. This means Potassium (K) has +1 charges and Chloride has -1 charges. Thus, they will cancel out to give a total neutral charge of 0.
Thus, the correct answer is to use enough a ions and cations so that the total charge is zero.
Answer:
C
Explanation:
edge 2020 unit rev
9) Which must be a mixture of substances?
A) solid
B) liquid
C) gas
D) solution
Answers
Answer:
D
Explanation:
Im confused please help :(
1.) When kinetic energy is high, velocity is high.
true or false
2.) When potential energy is high, velocity is at its highest.
true or false
Answers
Answer: #1: true
#2: false
Explanation: I’m not 100% sure though!
what always forms between two large air masses of different moisture and air temperature?
Answers
Answer:
"What always forms between two large air masses of different moisture and air temperature?"
Explanation:
When a cold air mass replaces a warm air mass the boundary between the two air masses is called a cold front. ... Fronts form at the boundary between air masses of different temperatures and moisture. Warm air always slopes upward over colder air.
The boundary between two air masses of different density such when it can not move called “stationary” “warm” when warmer air replaces cooler air.
What is density ?The density can be defined as the mass per unit volume which means that it is the ratio between mass and volume, that means the object has the stuff in a unit volume.
Density is determined by the matter where it shows how the matter is tightly crammed together and it was put forwarded by the Greek scientist Archimedes
To calculate the density of an object, the mass (m) can be divided by the volume (v)
Density = Mass/Volume
The different units include SI unit of density which is kilogram per cubic meter (kg/m3) or in cgs unit of grams per cubic centimeter (g/cm3).
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What is the first step when using a microscope?
A. Place the microscope slide on the stage
B. Plug the microscope in and turn it on
C. Switch to the low power objective lens
D. Secure the slide to the stage clips
Answers
Answer:
I think the answer is B :)
Answer:
the first step is B
Explanation: I'm on this lesson
Why can stars be called element factories?
Answers
Answer:
They came from the element factories we call stars. Stars are mostly hydrogen throughout most of their lifespans. They are driven by massive and continuous thermonuclear reactions and gravity. ... This extra heat begins to fuse helium atoms into heavier elements like carbon and oxygen and gives new life to the star.
Explanation:
The diagram illustrates photosynthesis. Which best describes what is happening in the area marked X?
Answers
Answer:
You forgot to include the diagram use snipping tool to take a picture and upload it
Explanation:
Which of the following representations shows the correct placement of trophic levels?
Secondary Consumers
Primary Consumers
Producers
Answers
3. Secondary Consumers
2. Primary Consumers
1. Producer
what is the value of youth participating in volunteering
Answers
Answer:
Volunteering helps the teens gain new skills necessary for the job market such as leadership, communication skills, dependability, time management, and decision making.
Explanation:
The Hidden Values of Volunteering
Learn New Skills. One fantastic thing that volunteering can offer you is a new understanding of your own abilities. ...
Test for Your Future. An added side effect of volunteering is that it gives you an opportunity to try out possible careers, majors, and opportunities. ...
Meet New People. ...
Accomplish Something Important.
HOPE THIS HELPED ❤✨
What is the toto number of neutrons in an atom of 73 li
Answers
70 neutrons.
18. Which two particle diagrams each represent a sample of one substance? Key O = atom of oxygen = atom of hydrogen 0 = atom of chlorine 8 OO 1 நம் மும் 20 2000 (1) I and III (3) II and IV (2) II and III (4) I and II
Answers
Answer:
1 and 11
Explanation:
Answer:1 and 11
Explanation:
How does the nucleus control cellular activity?
Answers
What gets heavier in an electrochemical cell?
O A. The cathode
B. Negative ions
O C. The salt bridge
O D. The anode
Answers
Answer:
A. the cathode
Explanation:
Answer:
A. The cathode
Explanation:
a p e x
7. The image shows the effects of exposing the plants to different color of
lights. The size of the plant was measured and the number of leaves were
counted if they are alive or dead. Size of plants and number of leaves are
Size of Plant
Number of Leaves
Living or Dead?
science or
What’s the answer?
Answers
Answer:
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Explanation:
KEEP GETTING THIS WRONG PLZ HELP
Answers
Answer:
1 224.24242 kg/ m to the 3rd power
The human eye cannot see anything less than 40 micrometers in size. What is this length in meters?
Answers
Answer:
4e-5 is the length in meters
Have a nice day! :)
Please answer 3 and 2
Answers
Answer:
3 is c but im unable to see the 2nd questions picture
Explanation:
Solid sodium is reacted with chlorine gas and a crystalline solid was formed. The crystalline solid is evidence that
A. The sodium was broken down into tiny pieces by the chlorine.
B. The reaction caused impurities to fall out.
C. Elements bond in a multitude of ways to make compounds.
D. The chlorine solidified.
Answers
Answer:
C. Elements bond in a multitude of ways to make compounds.
Given that one mole occupies 22.4 L at STP, show that R = .082 (atm * L)/(mol*K)
Answers
will mark brainliest, please hurry! :>
When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
a.
an alcohol
c.
a carboxylic acid
b.
an amine
d.
a polymer
Answers
Answer:
ans. will be a. an alcohol
What is the process that occurs when repeated freezing and thawing breaks apart rocks?
Erosion
Deposition
Physical weathering
Chemical weathering
Answers
Answer:
C. Physical weathering.
Answer: C. Physical weathering.
Explanation:
What is the difference in drawing Lewis Dot
Structures for ionic and covalent bonds?
Answers
In Lewis Dot Structure of Covalent compound it never contain any charge and for Ionic compounds always contain charges.
The Lewis Dot Structure for ionic compounds must demonstrate how the electrons are transported to create the ions in the compound. The Lewis Dot Structures of covalent compounds must demonstrate how the electrons are being shared to finish the octets of each atom in the molecule.
What is an ionic compound ?A chemical compound known as an ionic compound is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.
The term "ionic bonding" refers to a bond in which the ionic character is greater than the covalent character, i.e., when there is a significant difference in the electronegativity of the two atoms, which makes the bond more polar (ionic) than in a covalent bond, where the electrons are distributed more evenly.
The Lewis structures are not frequently drawn for ionic compounds due to the electrical motion of electrons.
Thus, The Lewis Dot Structure for ionic compounds must demonstrate how the electrons are transported to create the ions in the compound.
To learn more about an ionic compound, follow the link;
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Which is the larger atom S or K
Answers
Answer:
I'm pretty sure k
Explanation:
I'm not for sure I'm trying to help
Answer:
Potassium
Explanation:
Atomic size decreases across a Period, from left to right as we face the Table, and INCREASES down a Group, a column of the Periodic Table.
When two or more different elements unite chemically, they form a
A) compound
B) mixture
C) metalloid
D) solution
Answers
Answer:
compound ahhhhhhhhhhhhhgh
The purpose for witch something is designed or exists
Answers
Answer:
to help
Explanation:
to help
please help
Air masses that form over large bodies of water are moist. What process determines the amount of moisture in an air mass?
Answers
Answer:
I don't know if this is right but try it. The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.
C2H6O
Percent Composition with work shown
Answers
Answer:
50 percent
Explanation:
percentage
Instructions
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your
file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network
folder. Upload each file separately.
Answers
1. This experiment was to find how mass and speed effect KE. This is important because if you were in a situation where you needed something to go higher, you would know to add more or less of mass/speed.
To test mass, we filled the bean bag with a certain amount of water, then dropped it. After, you recorded how high it made the bean bag go. The same with speed, but same amount in the bottle, just dropped from different heights.
My hypothesis is when you have more mass, the KE will be greater. This is also the same with speed, if it is dropped from a higher place, the bean bag will launch farther than the last time.
2. Data I collected from the lab was like my hypothesis explained. When the height of the bottle increased, it made the bean bag go higher than the last. And I tested 4 different masses, 0.125 kg, 0.250kg, 0.375kg and 0.500kg. Each time the bean bag went higher on a larger mass.
A lot of times on the speed test, the bean bag would go higher than the bottle drop point, but not every time. Also, when it was dropped from the same height each time, some results varied quite a bit, like when it was dropped from 1.28 the results were 1.14 then 1.30 1.30. Mass on the other hand was all in the same number range, only once the numbers were a bit off from each other.
3. Some formulas I used were KE= ½ mv^2 and Ht v^2/2g. The first was to calculate the kinetic energy of an object, m=mass v=speed. Second was for finding out what height I needed to drop something to reach a certain speed, Ht=Height and g= Gravitational Acceleration of 9.8 m/s^2.
I used these to figure out tables that showed relationships between different things like mass and KE or speed and height. The whole time I was doing the lab, my data was going up, when there was more mass/speed there were higher values in the table.
This means that my hypothesis at the beginning was correct, more of m/s means KE will increase proportionally because they are all linear. I found it surprising when the bean bag height went over the water bottle drop mark.
4. To conclude, my hypothesis matched my data. The data values went up when more mass or speed was added. This means if I were in a situation where I needed more kinetic energy for something, I would know to increase mass or the speed of the object giving it energy.
The reason that this hypothesis is correct is when you have more mass, you have more energy. So, when you drop let's say a baseball, it isn’t that heavy so it would only launch the bean bag so far. But a bowling ball is very heavy and has lots of energy when falling because of that, it would make the bean bag go very high.
To make this experiment better, I would use a smoother material for the lever so energy wouldn’t be lost by friction from wood rubbing together. Also, maybe a scanner or video camera to more accurately record how far the bean bag went. All of these would help the lab get more precise results, maybe they could be used in a future lab.
Explanation:
Answer:
ima give my whole doc if anyone need it in future like i did Edge 2023
Explanation:
Which pair of elements are most likely to form a molecular compound?
Nitrogen and Hydrogen
Calcium and Copper
Chlorine and Neon
Please help! I will mark brainliest if correct!
Answers
Answer: Two nonmetals.
Explanation:
Answer:The only pair of nonmetals is sulfur and fluorine.
Explanation:The pair of elements most likely to form a molecular compound with each other are two nonmetals.
Some Reactions are endothermic
How does the temperature and energy change in an endo thermic reaction?
temperature change
energy change
А
decreases
energy taken in
B
decreases
energy given out
С
increases
energy taken in
increases
energy given out
D
increases
energy given out
Answers
Answer:
endothermic means energy is taken in and temperature increases.