Answer:
the answer is According to this model, the atom is a sphere of positive charge, and negatively charged electrons are embedded in it to balance the total positive charge. The electrons are like plums in a pudding.
Explanation:
The pudding represents the positive charge in the plum pudding model of the atom, while the plums represent the negative charge.
What is the plum pudding model?Thomson's atomic model was proposed by J.J. Thomson in 1900. This model described the inner structure of the atom, also known as the plum pudding model.
During the cathode ray tube experiment, J.J. Thomson discovered a negatively charged particle. In the year 1897, he explained that a cathode ray tube is a vacuum tube and the negative particle was called an electron.
Thomson assumed that an atom is made up of thousands of electrons and an electron is two thousand times lighter than a proton. He considered atoms surrounded by a cloud to have positive and negative charges. Thomson’s model of an atom is quite similar to a plum pudding.
According to Thomson’s atomic model, an atom contains a positively charged sphere with electrons embedded in it. The negative and positive charges are equal in magnitude so the whole atom is electrically neutral.
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Which element will have properties most similar to those of potassium?
Potassium is a very reactive metal and does not occur free in nature. A diagram of a potassium atom is shown.
Select one:
sodium
phosphorous
chlorine
argon
Hi!!!
Please explain what the Law of Conservation Of Mass is with the following terms:
Chemical Reaction, Reactant, Product, Balanced, Coefficient, and Subscript.
THANKS SO MUCH, Have a good day!!!
HELP PLS PLEASSEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
How do I solve this? Need an explanation and how to next questions are the same.
Answer:
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Explanation:
Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation?
Answer: The balanced equation will be
6H2 + N2 → 2NH3
Explanation:
First step is to balance nitrogen
ie, H2 + N2 → 2NH3
Second step is to balance hydrogen accordingly
ie, 6H2 + N2 → 2NH3
This is the perfect balanced equation.
Answer:
c
Explanation:
c
identify the most widely accepted theory of solar system formation and summarize the process.
True or False: You can find the mass of the products by adding the mass of the reactants together
Answer:
k
Explanation:
Which unit conversion allows you to convert 21.0 gallons into milliliters?
Some English and English-metric unit relationships: 1 liter = 1.057 quarts, 1 gallon = 4 quarts
Answer:
Explanation:
we are given
there are in 0.073 gallons
we can see that there are two non-zero places after decimals
so, there are two siginificant figures
step-1: Change gallons to quarts
we know that
1 gallon = 4 quarts
so, we can write as
step-2: Change into liter
we know that
1 liter = 1.057 quarts
or
step-3: Change into millilitre
we know that
Since, it is asking for only two significant figures
so, we can also write as
...................Answer
Which energy source is not available during rain or a particularly cloudy day?
solar
wind
water
biomass
or geothermal?
Is acetaminophen an ionic or molecular compound? Explain your answer in complete sentences.
Answer:
Acetaminophen is a molecular compound and not an ionic compound.
Explanation:
The formula of this compound is C₈H₉NO₂. Ionic compounds are formed between metals and nonmetals. In molecular compound the bond type is covalent.
Which situation shows kinetic energy being transformed into potential energy?
Group of answer choices
A ladder leaning against a house
A car moving at a steady speed
A sprinter moving from the starting line
A roller coaster car going uphill
Answer:
A roller coaster car going uphill
Explanation:
The roller coaster going up the hill has kenitic energy but when it comes to a small stop at the top of the hill it had been transormed into poteinal energy.
which of the following is a compound machine?
a. bicycle
b. ramp
c. screw
d. knife
Answer: I think it is a bicycle
Explanation: A bicycle has many parts
Why does the border between light and dark on the Moon change location?
We only view a portion of the lighted part of the Moon because of how the Moon rotates around the Earth.
What is solar system?Solar system is defined as the Sun's orbiting objects are confined by gravity to one system. The Solar System is the only system in which a habitable planet has been observed, the only star we can observe up close, and the only planets we can explore with spacecraft. Understanding the creation and evolution of planets as well as the conditions required for life requires extensive investigation into the solar system.
The terminator is the line on the moon that divides day from night. The moon's surface is in a twilight state along the terminator line, which is where the twilight zone is frequently referred to as. The sun is either rising or setting on the moon along this line.
Thus, we only view a portion of the lighted part of the Moon because of how the Moon rotates around the Earth.
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What geometric shape is the carbon dioxide molecule? The Lewis structure for CO2 contains two double bonds.
How do organisms that can’t make their own glucose through photosynthesis, get glucose?
Answer:
All explained on the site! Just cope and paste!
Explanation:
https://ssec.si.edu/stemvisions-blog/what-photosynthesis
Hope this helped!
How is the behavior of food coloring in the cool and heated water different? What caused the differences in their behavior?
Please don't just give the sample response.
Answer:
The food coloring mixes much faster in the hot water than it mixes with the cold water. This is because in the hot water, water molecules have more energy and are moving faster than the molecules of cold water.
Okay science but it wasnt in the subjects
Can someone watch this and awnser this question
https://youtu.be/Bn41lXKyVWQ
What are the FOUR major biogeochemical cycles upon which all life depends?
How does this look? (Its for a science project about animal life
Answer:
why is there a cherry on its head?
Explanation:
You may want to add details/description to the photo as it is a little confusing
Please Help Me!
Which metal reacts spontaneously with NiCl2(aq)?
A) Au(s)
B) Cu(s)
C) Sn(s)
D) Zn(s)
Answer:
THE answer IS B)cu(s)
Explanation:
HOPE ITS HELP
The metal reacts spontaneously with aqueous solution of NiCl₂ is Zinc as it is more reactive.
What is reactivity series?Electro chemical series is a reactivity series which tells about the reactivity of the metals present in any solution in the increasing order.
According to the reactivity series, Zinc is present at the upper position as compares to other three given metals and their reactivity will be represented as:
Zn > Ni > Sn > Cu > Au
So, zinc will replace the nickel atom from NiCl₂ solution.
Hence option (D) is correct.
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which energy source is a free resource that produces no greenhouse gases?
solar
wind
water
biomass
or geothermal?
how is making an apple pie different from making lead iodide
Making an apple pie is different from making lead iodide as lead iodide is a chemical compound and requires chemical process which is poisonous to eat while an apple pie is an eatable which is safe to eat.
What is a compound?Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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A solution of ammonium carbonate is mixed with a solution of magnesium nitrate. If magnesium carbonate is insoluble in water, what is the reaction?
Chiara knows that weight is affected by gravitational pull. She is putting together a poster to display in her classroom.
Since the moon's gravity is less than Earth's, all objects, including mammals, have different weights on the moon than on Earth. Use the table below to calculate how much a dog weighs on the moon.
Answer: A
Explanation: 150 lb * 1/6 = 25 lb
Chiara knows that weight is affected by gravitational pull. The weight of the dog on the moon is 25 lb. The correct option is A.
What is gravitational pull?Gravitational pull is the force of gravitation that pulls all the objects towards themselves. The force of gravitation is different on different planets, and on the moon, the gravitational pull of the moon is lesser than the earth.
The weight of the dog on the earth is 150 lb
The weight of any object on the moon is 1/6th of the weight of any object on the earth.
So to calculate the weight of the object on the moon, we should multiply the given weight of the dog on the moon by 1/6 to get the result.
150 lb x 1/6 = 25 lb
Thus, the weight of the dog on the moon is 25 lb. The correct option is A.
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A rock with different fossils is shown below:
A diagram labeled Fossil Layers is shown. The topmost layer is labeled Fish and shows the skeleton of a fish, the second layer from the top is labeled Shell and shows a shell, the third layer from the top is labeled Fern and shows a fern leaf, and the lowermost layer is labeled oak and shows an oak leaf
Based on the fossil, which organism evolved first?
Fern
Fish
Oak
Shell
An _______ is one form of a _______ where one received from each parent. Alleles are represented by ________.
PLSS ANSWER ASAP PLEASE.!!!!
Answer:
aren't there words??????
2NH4Cl(aq) + CaO(s) —> __H2O (l) + CaCl2 (aq)
which expression completes the balanced equation?
Which of the following is the best example of potential energy?
Group of answer choices
A car stopped at the top of a hill
A swimmer doing the backstroke
A bird making a nest
A gymnast doing a cartwheel
Answer:
A car stopped at the top of a hill
Explanation:
Potential energy is the energy that is stored in an object due to its position relative to some zero position.
therefore, the answer is the first option
=> A car stopped at the top of a hill
hope this helps and is right :)
Please help me asap!!!
Answer:
6. Iron sulfide
7. iron and sulfur
Explanation:
Answer all of dem Free BRAINIEST ON THE ROLL
John rode 3150 m at an average speed of 350 m/min.If he had ridden at average of 375 m/min instead. How much sooner would it have taken? (In seconds)
Answer:
36
Explanation:
It would have taken 36 s for John to cover the distance.
Average speed is defined as the total distance travelled divided by the total time taken.
Average speed = Total distance / total timeTo obtain the answer to the question, we'll begin by calculating the time taken to cover the distance (3150 m) in each case.
Case 1:Average speed = 350 m/min
Total Distance = 3150 m
Time 1 =?Average speed = Total distance / total time
350 = 3150 / Time 1
Cross multiply
350 × Time 1 = 3150
Divide both side by 350
Time 1 = 3150 / 350
Time 1 = 9 mins
Multiply by 60 to express in seconds
Time 1 = 9 × 60
Time 1 = 540 sCase 2:Average speed = 375 m/min
Total Distance = 3150 m
Time 2 =?Average speed = Total distance / total time
375 = 3150 / Time 2
Cross multiply
375 × Time 2 = 3150
Divide both side by 375
Time 2 = 3150 / 375
Time 2 = 8.4 mins
Multiply by 60 to express in seconds
Time 2 = 8.4 × 60
Time 2 = 504 sFinally, we shall determine how much sooner it would have taken John to travel at 375 m/min. This can be obtained as follow:
Time 1 = 540 s
Time 2 = 504 s
Difference in Time =?Difference = Time 1 – Time 2
Difference in time = 540 – 504
Difference in time = 36 sTherefore, it would have taken John 36 s if he had travelled at an average speed of 375 m/min.
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