Answer:
The correct option is the first option
Explanation:
The equation described in the question is shown below
²³⁹₉₄Pu +¹₀n ⇒ ¹⁰⁰₄₀Zr + blank + 2¹₀n
This equation is a nuclear fission because it involves the splitting of a heavy nucleus, Plutonium (Pu), into smaller nuclei, Zirconium (Zr) and an unknown nuclei.
The law of conservation of matter states that matter can neither be created nor destroyed hence in other to get the missing atom, we must know the total number of subscripts (mass number) and superscripts (atomic number) on both sides.
The total mass number on the reactant side is 239 + 1 = 240
The total atomic number on the reactant side is 94 + 0 = 94
While, The total mass number on the product side is 100 + 2(1) = 102
The total atomic number on the product side is 40 + 2(0) = 40
To determine the missing atom, you subtract the the total atomic number of the product from that on the reactant side; 94 - 40 = 54
The atom with the atomic number 54 is Xenon,
To determine the mass number of the xenon isotope involved, you subtract the the total mass number of the product from that on the reactant side; 240 - 102 = 138.
Hence, the particle that completes the equation is ¹³⁸₅₄Xe, the first option
Answer: A on edge
Explanation:
the person above me explained it well but i wanted to shorten it.
What are the similarities and differences between the two fish varieties?
Answer-
Fish are obviously animals because they move, they have sensory organs (eyes, mouth, barbels), and they have body structure (skeletons, skin, etc.). They breathe oxygen. They eat other organisms to survive. Fish are different from other animals because they live in water.
Answer:
The surface fish live near the surface of the water, and the blind cave fish live in dark subterranean caves. The surface fish have eyes and pigmentation on their bodies. The blind cave fish don’t have eyes, and they’re often albinos.
What is a coordinate bond
Answer:
Explanation:
The coordination or coordinate bond, also known as a dative covalent bond or bipolar bond, is a covalent bond in which a pair of electrons shared by two atoms is contributed by only one of them. The atom that gives the pair of electrons is called the giver and the recipient, receiver.
Answer:
a type of covalent bond between two atoms in which the bonding electrons are supplied by one of the two atoms
Explanation:
Check out the PNG below!
Thank you to the person out there!
Answer:
4 Ethanol has a boiling point of 89 C at standard pressure.
Which statement accurately describes the two balls?
A. The golf ball has more inertia than the table-tennis ball, so it takes
more force to change the motion of the golf ball.
O B. The table-tennis ball has more inertia than the golf ball, so it takes
more force to change the motion of the table-tennis ball.
C. The table tennis ball has less inertia than the golf ball, so it takes
more force to change the motion of the table-tennis ball.
D. The golf ball has less inertia than the table tennis ball, so it takes
more force to change the motion of the golf ball.
SUBMIT
Answer:
A
Explanation:
The golf ball has more inertia than the table-tennis ball, so it takes
more force to change the motion of the golf ball.
Which process most likely takes place when the kinetic energy of molecules overcomes the intermolecular forces?
boiling
condensation
freezing
solidification
Answer:
Explanation:
boiling
According to the forces of attraction, boiling takes place when the kinetic energy of molecules overcomes the intermolecular forces.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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What is the material being extruded by Mount Mayon? Where do you think did this material come from?
The material being extruded by Mount Mayon is "Lava".
Throughout view of such increasingly prevalent eruption occurrences, the water level of the wells drilled in nearby crater Mount Mayon, this same present volcano together in dynamic condition, is beginning to decrease.The episodes have been characterized by a resilient oozing but also welling of lava, frantic ejection of blocks as large as vehicles, and angered release of thick ashes and sedimentary sprinkles up to a few 100 kilometers over the crater lip.
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Definition of periodic trends
Answer:
.Periodic trends are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements. Major periodic trends include electronegativity, ionization energy, electron affinity, atomic radii, ionic radius, metallic character, and chemical reactivity.
limestone is a common building block used in texas and is a type of rock that forms in shallow marine settings due to selective precipitation some of the dissolved ions present in the marine setting are sodium potassium calcium nitrate chloride carbonate which ions form limestone
Answer:
Ca^+ and CO3^2-
Explanation:
Limestone is CaCO3. It is an important component of the shell of many species that have shells.
Limestone contains th calcium ion (Ca^+) and the carbonate ion (CO3^2-).
Limestone is used as a building material. It is usually mined as deposits below the ground.
Please hurry up and help me my teacher needs the answer NOW!
Answer:
3+(10G)=DG
ER_K5(O5G)+29K
According to Coulomb's law, what will happen to the electric force between
two identical negative charges as they move closer together?
A. F, will stay positive and increase in magnitude,
B. Fe will stay negative and increase in magnitude,
C. F, will become negative and decrease in magnitude
0
D. F will become positive and decrease in magnitude,
SUS
Answer:
A
Explanation:
Apex
Name two test substances that would react with each other to produce water and salt
A rectangular solid has a length of 3 cm a height of 4 cm and a width of 5 cm what is the solid volume ?
which element has a grater atomic radius ?phosphorus or bismuth?
According to periodic trends, bismuth has the greatest atomic radius.
The Rocky Mountains run parallel to the western coast of the United States. While parts of the California coast are lush and tropical, the area just east of the mountain range is a dry desert. What BEST explains the drastic climate difference between these two adjacent areas?
Answer:
The mountains cause rainfall.
Explanation:
The fact that the mountains run parallel to the coast is the key in the difference in climate between the two areas. Since they are parallel to the sea, they block the wind and moisture coming from the sea towards the land, the mountains cause this air to rise and when it hits the cold air at higher altitudes, it results in rain. This leads to the lush and tropical areas whereas without the parallel mountains to the coast, the amount of rain the area receives decreases, resulting in a desert like environment.
I hope this answer helps.
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What do phytoplankton do for the carbon cycle? Choose all that apply.
A. They take in oxygen for photosynthesis.
B. They take in carbon dioxide for photosynthesis.
C. When they die, the carbon left in them can be sequestered (stored) in the ocean bottom.
D. They are food for many animals, including some whales.
Answer:
B is the answer
Explanation:
Which atoms have an outer level of electrons that is one electron short of being full? Explain in a paragraph.
Explanation:
Sorry I tried but I do not know the answer but maybe someone else's know and can tell you the answer
what is the location of chlorine
Answer:
Chlorine can be found in abundance in both the Earth's crust and in ocean water. In the ocean, chlorine is found as part of the compound sodium chloride (NaCl), (table salt). In the Earth's crust, the most common minerals containing chlorine include halite (NaCl), carnallite, and sylvite (KCl).
Chlorine can be found in abundance in both the Earth's crust and in ocean water
HELP ME !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
A nonmetal
Explanation:
Which phrase correctly describes the particles that make up water vapor?
A. Having more energy than particles in liquid water
B. Making up a rigid but disorganized structure
C. Making up a rigid but ordered structure
D. Being compressed together so that they are touching
Answer:
i believe its A but im not sure
its the only one that makes any sense
plz mark brainliest
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Explanation:
Answer:A
Explanation:
Using the enlarged metric ruler segment shown below, what is the length of the
blue line in centimeters?
Answer:
1.8 cm
Explanation:
To measure length, use a metric ruler. It is separated into centimeter-sized units. One centimeter is represented by each number on the ruler. The longest mark is the centimeter.
What is the enlarged metric ruler segment?A metric scale is used to quantify traits or variables. Interval scales, ratio scales, and absolute scales are all grouped under the phrase “metric scale.”
The majority of statistical calculations and comparisons are possible with quantitative numerical values.
To the nearest tenth of a centimeter (0.1 cm), a metric ruler, for instance, may measure length. Using a separate metric ruler, you can measure lengths to the nearest 0.05 centimeters (0.05 cm).
The measurement with the lowest degree of uncertainty (0.05 cm) is more accurate.
Therefore, 1.8 cm is the length of the blue line in centimeters.
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Earth’s tides are affected by the gravitational pull of the Sun and the Moon, but mainly the Moon because the Moon is _______(1) Each day, each costal region on Earth experiences two high tides and two low tides in a ______(2) time period. This is because the gravitational attraction of the Moon creates ______(3) on two opposite sides of the planet. Two spring tides occur monthly, when the Moon is in its new and full phases. During these phases, the Moon and Sun are oriented ______________________,(4) which gravitationally pulls the water on Earth in the same direction, creating a large tidal range.
(1) A. closer
B. larger
C. denser
(2) A. 12-hour
B. 16-hour
C. 24-hour
(3) A. tidal bulges
B. moon phases
C. orbits
(4) A. in a straight line
B. at a right angle measuring 90 degrees
C. at an acute angle measuring 23 degrees
Answer:
1 closer
2 24hours
3 tidal bulges
4 in a straight line
Explanation:
Tides have been the effect of the sea with the gravitational pull of the sun and moon.
1. Earth’s tides are affected by the gravitational pull of the Sun and the Moon, but mainly the Moon because the Moon is closer to the earth.
In spite of high pull of the Sun, the distance of moon from earth results in increased effect of moon gravitational pull than Sun.
2. Each day, each coastal region on Earth experiences two high tides and two low tides in every 24 hours time period.
The daily tides has been resulted at the coast with the moon revolution around the earth's rotation.
3. This is because the gravitational attraction of the Moon creates tidal bulges on two opposite sides of the planet.
The effect of the moon gravitational force results in the bulging or the pulling force to the sea, resulting in the diurnal tides.
4. Two spring tides occur monthly, when the Moon is in its new and full phases. During these phases, the Moon and Sun are oriented at a right angle measuring 90 degrees which gravitation pulls the water on Earth in the same direction, creating a large tidal range.
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Use the periodic table to determine the charge of the ions below. Select the correct answer from the drop-down menus.
A lithium ion has a charge of ______
A calcium ion has a charge of _______
An aluminum ion has a charge of ______
A fluorine ion has a charge of _______
An oxygen ion has a charge of ________
Answer:
A lithium ion has a charge of +1.
A calcium ion has a charge of +2.
An aluminum ion has a charge of +3.
A fluorine ion has a charge of -1.
An oxygen ion has a charge of -2.
Below, the correct charges of the elements are listed;
A lithium ion has a charge of +1 A calcium ion has a charge of +2 An aluminum ion has a charge of +3 A fluorine ion has a charge of -1 An oxygen ion has a charge of -2The ionic or electrical charge of an element is the new state the element acquires because of losing or gaining an electron.
When elements lose their electrons, they tend to attain a positive charge and when they gain an electron, they tend to acquire a negative charge. To easily identify the charge of the ions, the periodic table should be used.
Elements (metals) found on the left side of the periodic table tend to have a positive charge while elements (non-metals) on the right side of the table usually assume a negative charge.
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Curiosity is important in the progress of science because it
A. aids in the interpretation of data.
B. encourages new experimentation.
C. ensures the inclusion of different viewpoints.
D. allows a scientist to learn from others.
Answer:
B
Explanation:
because it makes you want to know what happens in an experiment
Answer:
B. encourages new experimentation.
Explanation:
right on EDGE 2021
brainliest plz YW ppl
why is it that you can not feel earths movement but you can observes its effects
a) a rotates
b) earth revolves
c) earth only moves once a year
d) earth has gravity
What is the average acceleration from 0 seconds to 4 seconds
Answer:
1
Explanation:
you would take 4 subtract 0 which is 4 and divide it by 4 which is 1
A 4.86 g piece of metal is placed in a graduated cylinder containing 15.5 mL of water the water level rose to 17.3 mL what is the density of the metal
Answer:
The answer is 2.70 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 4.86 g
volume = final volume of water - initial volume of water
volume = 17.3 - 15.5 = 1.8 mL
So we have
[tex]density = \frac{4.86}{1.80} \\ [/tex]
We have the final answer as
2.70 g/mLHope this helps you
Which is a characteristic of colloids?
a. are homogenous mixtures
b. have large dispersed particles
c. will settle out over time
d. are made up of at least two substances
Answer:
D
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The definition of colloids is very disputed on whether or not it is homo/heterogenous. I wouldn't go with this answer, but its based on what you learned it was. At a microscopic level its hetero but at a macroscopic its homo.
They do have somewhat large dispersed particles but this better describes suspensions
They don't easily settle out.
And in order to be a mixture, they are made up of at least two substances
D is likely the best answer out of the bunch.
Colloids are made up of at least two substances. Therefore, option d is correct.
What are colloids?A colloid can be described as a mixture in which one substance consisting of dispersed insoluble particles is throughout another substance. The particles should be dispersed in a liquid. The term colloidal suspension can be referred to unambiguously as the overall mixture.
A colloid exhibits a dispersed phase and a continuous phase. The dispersed phase particles have a diameter of about 1 nm to 1 μm. Some colloids are translucent due to the Tyndall effect and other colloids can be opaque or have a slight color.
Hydrocolloids can be described as certain chemicals that are colloidally dispersible in water. Therefore becoming very "soluble" they can change the rheology by raising the viscosity.
A colloid possesses a dispersed phase and a continuous phase. A solute in a solution is individual molecules, whereas colloidal particles can be bigger.
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Match the block to its correct density.
1 .
0.917 Kg/L
Block A
2 .
0.70 Kg/L
Block B
3 .
3.53 Kg/L
Block C
4 .
19.3 Kg/L
Block D
5 .
0.64 Kg/L
Block E
Answer:
Block A - 19.3
Block B - 0.64
Block C - 0.70
Block D - 0.917
Block E - 3.53
Hope this helps :)
Answer:
Block A - 19.3
Block B - 0.64
Block C - 0.70
Block D - 0.917
Block E - 3.53
Explanation:
12. t is the technique of revolutioary repackaged application thal enhances
the detail of an image on fabric using resistant dyeing
A Canling
B. Waxing
C. Moderm Baik
D. Traditional
Batik
Which statement describe global warming? Select 2 answer choices
Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere
