Answer: Decreased kinetic energy of the molecules
The first option that is given in the question is the correct option.
Explanation:
The molecules of a substance act differently at different temperatures but we know that its energy is dependent on the temperature at which it is present. The normal tendency of molecules is to vibrate on move around but, when it absorbs a certain amount of heat it gains more energy and tends to move around faster.
And just the other way round happens when heat is lost so we can say with a decrease in temperature the activity of molecules will also decrease and hence the kinetic energy will be decreased.
Answer:
Increase chemical energy of the molecules
Explanation:
Because once you change temperature it will have a chemistry reaction
Identifying Isotopes
Identify the parent isotope and daughter isotope in this nuclear reaction:
Ram Rn+ He
Which is the parent isotope?
Answer:
The parent isotope in the given elements is Radium 226.
Explanation:
The two elements given in the question are radioactive elements radon and Helium which are formed after an Alpha decay happens in the radium 226 to form Radon 222.
Radon has many isotopes out of which here radon 222 is formed which is a noble gas that is odourless colourless but Radioactive. Again in this reaction helium is formed which is again a noble gas and very light in weight.
Answer:
the 3rd option on edge
Explanation:
Which two atoms are isotopes of each other?
Answer:
C
Explanation:
Consulting the definition of an isotop we find that it requires the same element to obtain a different valence (?!) by accepting or donating electrons(?!)
The atoms that are isotopes to each other are ²⁴₁₂Mg and ²⁵₁₂Mg. Option C is correct.
Isotopes are the atoms of the same element. They have same number of electrons and protons. They have different number of neutrons. They have same atomic number but have different mass number. They are either stable or reactive.
For Example: Hydrogen has three isotopes, protium, deuterium and tritium. And, Chlorine has two isotopes, they are Chlorine-35 and chlorine-37.
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Any two objects that have mass will also have which type of force between them? A- Magnetic
B- Gravitational
C-Nuclear
D- Chemical
Remember for science class!!!!!!!!!!!!!!!
Answer:
Gravitational
Explanation: Hope This Helps And Have A Great Rest Of Your Day.
If gas in a sealed container has a pressure of 50 kPa at 300 K, what will the pressure be if the temperature rises to 360 K?
60 kPa
161 kPa
41 kPa
16 kPa
Answer:
[tex]\boxed{\text{60 kPa}}[/tex]
Explanation:
The volume and number of moles are constant, so we can use Gay-Lussac’s Law:
At constant volume, the pressure exerted by a gas is directly proportional to its temperature.
[tex]\dfrac{p_{1}}{T_{1}} = \dfrac{p_{2}}{T_{2}}[/tex]
Data:
p₁ = 50 kPa; T₁ = 300 K
p₂ = ?; T₂ = 360 K
Calculation:
[tex]\begin{array}{rcl}\dfrac{50}{300} & = & \dfrac{p_{2}}{360}\\\\\dfrac{1}{6} & = & \dfrac{p_{2}}{360}\\\\\dfrac{360}{6} & = & p_{2}\\\\p_{2} & = & \mathbf{60}\\\end{array}[/tex]
[tex]\text{The new pressure will be $\boxed{\textbf{60 kPa}}$}[/tex]
what are the advantages of adulteration
The advantages of food adulteration includes a better appearance in the food and may increase the selling price, but these advantages only affect the producer of the product. Disadvantages include the increased risk of illness and allergic reactions due to the inedible products that are addedExplanation:
Which has a great influence on one’s sense of self, in addition to self-confidence, self-respect, and values?
attitude
actions
perceptions
beliefs
Answer:
attitude
Explanation:
if your in k12 health attitude is the answer. perceptions was wrong
An attitude has a great influence on one’s sense of self, in addition to self-confidence, self-respect, and values.
So, first option is correct one.
What contributes to our self of sense?The self of sense also refer as ego , individuality and personality.
The things which contributes identity as a person are,
Your belief systemPersonality triedAbilitieslike and dislikelearn about self-confidence.
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Read the second section, "Tsunamis Usually Happen In The Pacific Ocean."
Read the final section, "Warning Systems And Evacuation Plans Have Saved Lives."
How does the second section relate to the final section?
A
Both sections provide specific examples of the effects of tsunamis.
B
Both sections compare and contrast different causes of tsunamis.
C
The second section describes problems with studying tsunamis. The final section describes how scientists discovered a solution to the problems.
D
The second section describes scientists' predictions about tsunamis. The final section provides information about whether they were correct.
The second section explains why tsunamis are a significant risk in the Pacific Ocean, providing context for the development of warning systems and evacuation plans discussed in the final section.
The second section, which deals with the fact that tsunamis usually happen in the Pacific Ocean, is related to the final section about warning systems and evacuation plans in that it sets the context for the need for such systems. Because tsunamis are most prevalent in the Pacific, the presence of warning systems and evacuation plans in that area is crucial for saving lives. The mitigation efforts mentioned in the second section, such as the Pacific Tsunami Warning Center established after a tsunami in Hawaii, exemplify the types of responses that have been created to address the clear and present danger that tsunamis pose to coastal communities.
Suppose your bedroom is 21 ft long, 17 ft wide, and the distance from floor to ceiling is 7 ft, 6 in. You need to know the volume of the room in metric units for some scientific calculations. What is the room’s volume in cubic meters.
1. ______ m^3 (cubic meters)
2.______ L (Liters)
Answer:
1. 75.82 m^3 (cubic meters)
2. 75820 L (Liters)
Explanation:
Given data
L = 21 FT
W = 17 ft
h = 7 ft 6 in
Calculation
Formula to calculate volume is:
V= L×W×h
put the values in formula
V = 21 ft × 17 ft × 7 ft 6 in
V = 2677.5 ft
Now we will convert Cubic ft to cubic meters, as we know that 1 cubic meter is equal to 35.3147 cubic feet
V (m^3) = 2677.5 ÷ 35.3147
V (m^3) = 75.82 m^3
Now we will calculate liters
as we know that 1 cubic meter is equal to 1000 liters
so multiply the ans. with 1000
L = 75.82 × 1000
L = 75820 l
PLEASE HURRY
In order to calculate how many neutrons are in an atom, you must subtract the mass number from the number of protons?
Neutrons = Mass # - Protons Question
True or False
Answer:
true
Explanation:
2. Why do atoms combine to form chemical bonds?
Atoms combine because they are all working toward getting 8 valence electrons, except for noble gases. It is in their nature.
If you need a better explanation just ask in the comments.
Happy to help! Please mark as BRAINLIEST! Thanks
In which of the following situations is heat transferred from the source to popcorn kernels by the method of conduction?
An air popper is used
Popcorn bag is exposed to the sun
Bag of corn is placed in a microwave
Kernels are placed in a pan on a stove
Answer:
Kernels are placed in a pan on a stove
Explanation:
Heat transfer by conduction involves the actual movement between particles of the medium. For conduction to occur, the particles must be in contact with the heating medium or the body at a higher temperatures.
For the popcorn kernels to conduct heat using the conduction heat transfer process, the kernels are placed in contact with the heat source using the frying pan. The stove is the heat source.
When put a knife in contact with fire, it is heat transfer by conduction.
Answer:kernels are placed in a pan on a stove
Explanation:
HELP ASAP WILL GIVE BRAINLY
Which of the following describes a compound? (Hint: Carbon and oxygen both appear in the periodic table)
A. A piece of pure carbon, containing only carbon atoms
B. Oxygen gas surrounding a solid piece of carbon
C. A substance made of two Oxygen atoms for each carbon atom
D. Carbon and oxygen atoms mixed without being bonded together
Answer:
C is the correct answer
Explanation:
A compound is a substance that contains two or more atoms chemically combined together in a fixed ratio by mass.
Which sequence has the states of matter listed from least to greatest kinetic energy!
A solid gas liquid
B. gas liquid → solid
C. liquid → solid gas
D. solid → liquid → gas
Answer: B. gas, liquid, Solid
Hope I Helped
:)
Answer:
C
Explanation:
Solid, liquid, gas
The attraction between particles give solids a definite
Answer:Shape and volume
Explanation:
A group of engineers has just conducted an experimental trial on a shoe
designed to help people suffering from a painful foot disorder. During the trial,
the shoe proved effective for only 5% of the test subjects. What should the
engineers do next?
Answer:
its c on mine but,
find out if the sole of the shoe can be redesigned.
Explanation:
When a beaker of water is heated over a Bunsen burner, the volume increases slightly. What is the most likely reason for the small increase in volume?
A
The water molecules are getting smaller.
B
The water molecules are getting bigger.
C
The water molecules are moving faster.
D
The water molecules are moving slower.
Answer:
most likely c
Explanation:
the volume is increased by the quickly moving water particles
Answer: Option C
Explanation:
The molecules has kinetic energy and potential energy both. When the water molecules were heated on a Bunsen Burner then there can be a slight increase in the volume of the water.
This is because upon heating the kinetic energy of the molecules increases and it starts moving fastly.
Due to the movement of the particles, they become far from each other and there is a slight increase in the volume of the water.
Stephanie purchased two watermelons. One watermelon weighed 6.95 kilograms. The second watermelon
weighed 952 grams more than the first.
How much did the second watermelon weigh in grams?
1 kilogram= 1000 grams
grams
Answer:
7.47 kilograms
Explanation:
Answer:if 1 kg is equal to 1000 g so 1000/952 is equal to 1.05 kg
Explanation:the second watermelon weigh 1.05 k than the first watermelon ,so 6.95 + 1.05= 8 k
Determine the energy in joules or a photon with frequency of 5.78 x 10^17 Hz
Answer:
E= 3.829 x 10-16 J
Explanation:
Data Given
Frequency= 5.78 x 10^17 Hz
Energy in joules = ?
Solution:
Formula used to calculate Energy
E= hv…………….. (1)
Where E is Energy
h is Planks Constant = 6.626 x 10–34 J s
v is frequency
The given frequency is in Hz (Hertz)
Hz is equal to s-1 (per second)
1 hertz = 1 /second
Putting the values in Equation 1
E= (6.626 x 10–34 J s) (5.78 x 1017 s-1)
E= 3.829 x 10-16 J
which statement about schrodingers theory of the atomic model is true?
I found the complete question:
Which statement about schrodingers theory of the atomic model is true?
A. it proved that the nucleus of an atom is positively charged.
B. it was the first theory to discuss the existence of electrons.
C. it explained the odds of finding the position of an electron.
D. it assumed the electron cloud to be heavier than the nucleus.
Answer:
C. it explained the odds of finding the position of an electron.
Explanation:
Erwin Schrodinger formulated the wave equation of electrons. His wave equation highlighted the probability of where an electron can be found or located in an energy level.
The region of maximum probability of where an electron is located is referred to as an electron cloud or an orbital.
Answer:
c
Explanation:
Janelle is observing a sample of matter. She notes that it is a shiny silver-colored solid, has a
mass of around 20 grams, and conducts heat and electricity well. What type of properties is
Janelle observing?
Chemical properties
Only intensive properties
Physical properties
Only extensive properties
Janelle is observing Physical properties.
Why?
The properties of matter can be classified as follows:
Extensive and Intensive: Extensive properties depend on the amount of matter involved in the measuring (e.g. mass), and intensive properties do not depend on the amount of matter (e.g. density, conductivity).Physical and Chemical: Physical properties do not involve a change in the nature of the substance that is being measured (e.g. color, length), while Chemical properties involve a change in the nature of the substance when they are measured (e.g. reactivity).The properties that Janelle observed are: Color (intensive, physical), mass (extensive, physical), heat conductivity (intensive, physical), and electrical conductivity (intensive, physical). All these properties are Physical properties.
Have a nice day!
If you added 45,000 calories to water that was at 25 degrees C, and the ending temperature was 35 degrees C, how much water did you have (in L)?
Answer:
4.5 L water we have in litres (L).
Explanation:
[tex]Q=m\times c \times \Delta T[/tex]
where
[tex]\Delta T[/tex] = Final T - Initial T
Q is the heat energy in calories
c is the specific heat capacity (for water 1.0 cal/(g℃))
m is the mass of water
Plugging in the values
[tex]\\$45000 \mathrm{cal}=m \times 1.0 \frac{\mathrm{cal}}{\mathrm{g}^{\circ} \mathrm{C}} \times\left(35^{\circ} \mathrm{C}-25^{\circ} \mathrm{C}\right)$\\\\$45000 \mathrm{cal}=m \times 1.0 \frac{\mathrm{cal}}{\mathrm{g}^{\circ} \mathrm{C}} \times 10^{\circ} \mathrm{C}$\\\\$m=\frac{45000 \mathrm{cal}}{1.0 \frac{\mathrm{cal}}{\mathrm{g}^{\circ} \mathrm{C}} \times 10^{\circ} \mathrm{C}}$\\\\$m=4500 \mathrm{g}$\\\\Density of water $=\frac{\text { mass }}{\text { volume }}$[/tex]
So,
Volume of water = mass/density
[tex]\\\\=\frac{4500 \mathrm{g}}{\frac{1.09}{\mathrm{mL}}}=4500 \mathrm{mL}$$[/tex]
=4.5 L (Answer)
One of the following properties was originally used to arrange elements in the periodic table but is no longer used to organize the modern version which property fits the description
Answer:
atomic mass
Explanation:
Answer:
atomic weight or atomic mass.
Explanation:
The development of periodic table starts from the Dobereiner's law of triad where he arranged the elements based on the average of atomic weight of two elements. the middle element was supposed to one with the atomic weight average of the two other elements.
Then the Newland law of octave was proposed where he observed the changes in the periodic trend based on atomic weight after seven elements.
Later Mendleev arranged the elements based on atomic weight only.
Thus the answer is atomic weight or atomic mass.
In modern version we use atomic number to arrange elements.
What is the mass of one mole of titanium atoms
Answer:
47.88 g
Explanation:
The atomic mass of titanium is 47.88 amu or 47.88 g/mol
it means,
one mole of titanium = 47.88 g
highlighted answer is wrong just need someone to explain it if you can!❤️
Answer:
2.7 x 10^-1
Explanation:
The places you move to the left are added to the 10 in negative exponential
Define Newton's 1st and 2nd laws of motion and give an example of each law.
Please gelpp
First Law: An object in motion will stay in motion unless acted on by an unbalanced force. An object at rest will stay at rest unless acted on by an unbalanced force.
Lets say a cup is sitting on a table, if you fall into that table and knock over the cup you are the unbalanced force acting upon the cup. The cup is at rest until you (the unbalanced force) acted upon it.
Second Law: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Say you are at the Supermarket. Its easier to push the empty shopping cart. Once the cart is filled you must exert more force to push it. This is because the empty cart has less mass than the full one.
Which unit would be most appropriate for measuring the volume of water in a swimming pool?
the volume ( in gallons)
Why did other scientists discount Wegener's theory of continental drift? Why did Wegener have a hard time convincing other people that his idea was correct?
A. He couldn't explain how it happened, only that it did happen
B . He had a bad reputation in the scientific community
C. He never published his ideas in a report or book
D. He had no evidence
Answer:
He couldn't explain how it happened, only that it did happen
Explanation: The answer later came from someone else
Answer:
Option (A)
Explanation:
Alfred Wegener was the person who put forwarded the theory of continental drifting. But it was difficult for him to explain this theory. He had evidences regarding the drifting of the continents but he was not able to determine the main mechanism behind this continental motion. This is why he had a hard time convincing other people that his idea was correct.
Later, over a due course of time, the new and widely accepted theory known as the Plate tectonic theory, was able to prove the mechanism behind the drifting of the continents. The main mechanism behind this was the convection current that generates in the mantle, and these currents were formed because of the heat radiated from the interior of the earth.
Hence, the correct answer is option (A).
Most carbon compounds are formed by exchanging electrons with carbon.
True
False
Answer:
Most carbon compounds are formed by exchanging electrons with carbon. True
Match the formula for the following compound: acetic acid HC 2H 3O 2 C 2H 3O 2 H 2C 2H 3O 2 HA
Final answer:
The formula for acetic acid is C2H4O2, also written as CH3COOH. Its empirical formula, derived by simplifying the molecular formula to the lowest whole number ratio, is CH2O.
Explanation:
The formula for acetic acid is C2H4O2, which can also be written as CH3COOH. In calculating its empirical formula, you would note the number of Carbon (C), Oxygen (O), and Hydrogen (H) atoms. You mentioned a given molecular formula of acetic acid as C2H4O2. This indicates a ratio of 2 Carbon atoms to 4 Hydrogen atoms to 2 Oxygen atoms. Dividing by the lowest common denominator, which is 2, yields a simplest whole-number ratio of atoms of 1:2:1, thus the empirical formula for acetic acid is CH2O.
How many atoms are in 3.64 mol of pure aluminum?
Total, approximately 2.19 x 10²⁴ atoms in 3.64 mol of pure aluminum.
To determine the number of atoms in a given amount of substance, you can use Avogadro's constant (6.022 x 10²³ atoms/mol). This constant will represents the number of atoms, ions, or the molecules in one mole of the substance.
Given:
Amount of aluminum (Al) = 3.64 mol
Avogadro's constant = 6.022 x 10²³ atoms/mol
Number of atoms = Amount of substance (in mol) × Avogadro's constant
Number of atoms = 3.64 mol × (6.022 x 10²³ atoms/mol)
Number of atoms ≈ 2.19 x 10²⁴ atoms
Therefore, there are approximately 2.19 x 10²⁴ atoms in 3.64 mol of pure aluminum.
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