Answer:
option A is correct answer of this question
option A is correct answer of this questionhope it helps
Which would have a stronger attraction to the nucleus, the outer electrons of a carbon atom or the outer electrons of an oxygen atom? Why?
The outer electron of an oxygen atom will have a stronger attraction to the nucleus than the outer electrons of a carbon atom.
In the periodic table, atomic sizes decrease across the period. This decrease in atomic size stems from increase in the size of the nuclear charge.
This implies that as we move from left to right in the periodic table, atoms of elements become smaller due to stronger nuclear attraction as the size of the nuclear charge becomes larger.
Oxygen atom has a nuclear charge of +8 while carbon atom has a nuclear charge of +6. Therefore, outer electron of an oxygen atom will have a stronger attraction to the nucleus than the outer electrons of a carbon atom.
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What usually happens to the solubility of gas as temperatures decreases?
Answer:
the solubility of the gas increases
Explanation:
as the kinetic energy of a gaseous solute increases,its molecules has a greater chance of escaping the attraction of the solvent molecules and return to the gas phase..which lead to the solubility of the gas been Increase as the temperature decreased .
What are 2 substances that DO NOT REACT?
Water and oil? Cake and your finger? Glass and virtually anything? ...
Tonnes and tonnes of noninterreactant substances.
Hope this helps.
Does CO2+H2O----> C6H12O6+O2 demonstrate the Law of Conservation of Mass?
Answer:
Explanation:
-Reactants-
C: 1
O: 3
H : 2
-Products-
C: 6
O: 8
H: 12
Since these two are not equal, this reaction is not balanced.
Here is the balanced reaction:
6CO2+6H2O ⇒ C6H12O6+6O2
Which of the following best describe the parts of the volcano?
a .mountain or hill
B. are openings in the earth surface
c. are found only on land D. composed of caldera, vent and crater
Answer:
B. are openings in the earth surface
answer it for 70 piontssssss !!!!!!!!!!
How many moles are in 2.8x10^23 atoms of Calcium?
Answer: 1 mole ➡️ 6.022×10²³ atoms of si.
X mole ➡️ 2.8×10²⁴ atoms of si.
X = 2.8×10×10²³/6.022×10²³
= 28/6.022
= 4.65 moles.
Explanation:
The total number of moles in 2.8x10^23 atoms of Calcium will be 4.65 moles.
What is a mole?The mole is defined as the amount of substance containing the same number of chemical units (atoms, molecules, ions, electrons, or other specified entities or groups of entities) as exactly 12 grams of carbon-12
The mole unit allows us to express amounts of atoms and molecules in visible amounts that we can understand.
For example, we already know that, by definition, a mole of carbon has a mass of exactly 12 g. This means that exactly 12 g of C has 6.022 × 10 23 atoms
1 mole is 6.022×10²³ atoms of calcium
one mole of calcium = 2.8×10²⁴
substitute the value in the equation,
2.8×10²⁴ atoms of calcium = 2.8×10×10²³/6.022×10²³
total number of moles = 28/6.022= 4.65 moles
Therefore, the total number of moles will be 4.65 moles
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Drag each sequence to the correct location in the table.
Sort the sequences based on the type of mutation they display.
TATTA - TATTAGA
TATTCG TATTAAT
TATTAT TATTACG
ACGTATTC - ACGTTTC
ATTA GTAC - ATGT ACTA
GATCCAT - GATCCATCA
TACTTAGT TACTTGT
Deletion
Translocation
Insertion
Answer:
Does the picture go with the question?
Explanation:
You are given 68 g of aluminum (Al) and excess water. How many grams of aluminum oxide (Al2O3) can you make?
4 Al + 3O2 --> 2Al2O3
Question 13 options:
95.84 g Al2O3
2.52 g Al2O3
128.48 g Al2O3
101.96 g Al2O3
When 6.8776g of aluminium reacts with an excess of oxygen, 6.8776g of aluminium oxide are produced.
What is the name of aluminum oxide?
Al2O3 is an inorganic chemical reagent with the chemical name aluminum oxide. Other names for it include alumina, alundum, al-alumina, and aloxide.
If there are 4 moles of Al that equals 107.926156 grams of 4Al
If there are 2 moles of Al2O3 that equals 203.9226g
If 107.9261 grams of 4Al equals 203.9226 grams of 2Al2O3 then, 3.64g of Al equals x
107.9261 / 3.64 = 203.9226 / x
(107.9261) x = (203.9226) 3.64
107.9261 x = 742.2782
dividing both LHS and RHS by 107.9261,
107.9261/107.9261x = 742.2782/107.9261
x = 6.8776g
Hence, 6.8776g of aluminium oxide are produced.
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Which line (A or B) represents a faster
speed?
Answer:
A
Explanation:
Because in 1 second, line A was faster than line B.
A tank of gas is found to exert 8.6 atm at 38°C. What would be the required
temperature to change the pressure to standard pressure?
Answer:
36.2 K
Explanation:
Step 1: Given data
Initial pressure of the gas (P₁): 8.6 atmInitial temperature of the gas (T₁): 38°CFinal pressure of the gas (P₂): 1.0 atm (standard pressure)Final temperature of the gas (T₂): ?Step 2: Convert T₁ to Kelvin
We will use the following expression.
K = °C +273.15
K = 38 °C +273.15 = 311 K
Step 3: Calculate T₂
We will use Gay Lussac's law.
P₁/T₁ = P₂/T₂
T₂ = P₂ × T₁/P₁
T₂ = 1.0 atm × 311 K/8.6 atm = 36.2 K
if the pressure, volume, and tempature of a gas are known which can most likely be found by using the ideal gas law
• the molar amount of the gas
•the partial pressure of the gas
•the stand temperature
•the molar mass
Answer:
• The molar amount of the gas
Explanation:
Hello!
In this case, according to the ideal gas law:
[tex]PV=nRT[/tex]
Whereas P stands for pressure, V for volume, n for the molar amount of the gas, R for the universal gas constant and T for the temperature, we can see that as pressure, volume and temperature are given, we can compute the molar amount of the gas as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Since R is a constant always.
Best regards!
Which waves can travel through empty space?
A. Light waves
B. Mechanical waves
C. Sound waves
D. Water waves
SUBIN
Answer:
light waves a
Explanation:
because there's all kinds of different light in space if you think about it like the bright stars or the bright moon it's kind of like light it just makes sense when it's traveling for space water waves obviously it's not possible that travels through the air or like on a beach sound waves you can't really cure much in space and mechanical waves is pretty much the action of an object or something like that kind of it's pretty much happens on Earth but light waves happen for like asteroids or shooting stars a comments it happens all the time for space so it makes just perfect sense
PLEASE HELP!! IM BEING TIMED
It takes 1 frame, 1 seat, 2 pedals, and 3 wheels to make 1 tricycle. If I start with 200 frames, 200 seats, 200 pedals and 240 wheels, how many tricycles can you make? What did you run out of? What is the limiting reactant?
Answer:
80 tricycle
Explanation:
Because u need 3 wheels to for each tricycle so Ll u have to do is just divide 3 with 240 u will get 80
The Earth’s atmosphere is divided into five layers. In which layer does all life exist?
Question 1 options:
Exosphere
Stratosphere
Mesosphere
Troposphere
Question 2
As you travel from the surface up through the atmosphere in outer space, the gases or air pressure becomes
Question 2 options:
more dense/increases
less dense/decreases
Higher in temperature
Consistently lower in temperate
Question 3
This gas is found in the stratosphere where it helps protect us from UV radiation.
Question 3 options:
Ozone
Oxygen
Nitrogen
Carbon dioxide
Question 4
What is the most abundant gas in our atmosphere?
Question 4 options:
oxygen
hydrogen
nitrogen
water vapor
Question 5 (1 point)
This vascular tissue carries water absorbed by the roots to the other parts of the plant.
Question 5 options:
phloem
xylem
Question 6 (1 point)
The protist seen here is called euglena. It is both animal-like and plant-like. It eats food but it also has chloroplasts like a plant cell, in order to make food. The euglena has one structure that helps it move. It is visible here. What is that cellular structure?
Question 6 options:
Cilia
Flagellum
pseudopod
Golgi Bodies
Question 7 (1 point)
Which kingdom is MOST LIKELY to contain organisms that are decomposers?
Question 7 options:
Kingdom Fungi
Kingdom Eubacteria
Kingdom Animalia
Kingdom Plantate
Question 8 (1 point)
In the oceans the colder water sinks into deep basins, while warmer water stays closer to the surface. The water then moves around the ocean basin. This causes
Question 8 options:
Tidal waves
Wind Drifts
Ocean convection currents
Plate tectonics
Question 9 (1 point)
Which best explains how insects help flowering plants in reproduction?
Question 9 options:
Insects help keep predators, like birds, away from flowers' seeds
Insects store food in flowers, providing nutrients flowers need to make seeds.
Crawling insects cause pollen to fall on the ground beneath flowering plants.
As they fly, insects spread pollen that sticks to their bodies from the flowers.
Question 10 (1 point)
Jaime is picking out a skillet for his mother as a birthday present. He is looking at two skillets, one with a plastic handle and one with a metal handle. Thinking just about safety, which handle would you recommend to Jaime and why?
Question 10 options:
The metal handle, because it will last longer.
The plastic handle, because it is light weight
The metal handle, because it is a good conductor
The plastic handle, because it is a good insulator.
Question 11 (1 point)
Fungi is a very simple eukaryotic organism. Unlike plants and some protists, fungi is a consumer. This example lives in/on a tree. How is this fungus consuming food in the picture?
Question 11 options:
The roots of the fungus can absorb nutrients from the soil.
The hyphae, or feeding structures, reach deep into the wood to obtain nutrients.
The white cap of the fungus traps small insects and other organisms as they pass by.
The cap of the fungus can absorb chemicals from the air, like carbon and oxygen, and use the gases to make food.
Question 12 (1 point)
The type of energy stored in food and batteries is
Question 12 options:
kinetic energy
chemical energy
mechanical energy
electromagnetic energy
Question 13 (1 point)
The Law of conservation of energy states that energy cannot be
Question 13 options:
Stopped or started
Hot or cold
created or destroyed
Kinetic or potential
Question 14 (1 point)
A current-carrying coil of wire with many loops that can become magnetized is called a(n)
Question 14 options:
Insulator
Electromagnet
Resistor
Aurora
Question 15 (1 point)
Heat transfers occurs
Question 15 options:
Only from cold to hot
Both a and c
Only from hot to cold
It doesn’t transfer
Question 16 (1 point)
Malcolm's class has been assigned a project in which it is to build a four-wheeled vehicle to transport a can of soda across the classroom. The car will be powered by stretching rubber bands around an axle before releasing the vehicle on the floor.
The vehicle will be powered by transforming _______ energy into _______ energy.
Question 16 options:
Thermal; mechanical
Mechanical, thermal,
Kinetic, elastic potential
Elastic potential, kinetic,
Answer:
1. troposphere
2. less dense/decreases
3. ozone
4. nitrogen
5. xylem
6. flagellum
7. kingdom fungi
8. Ocean convection currents
9. As they fly, insects spread pollen that sticks to their bodies from the flowers.
10. the plastic handle, because it is a good insulator.
11. The hyphae, or feeding structures, reach deep into the wood to obtain nutrients
12. chemical energy
13. created or destroyed.
14. electromagnet
15. c
16. kinetic, elastic potential
define saturated and unsaturated fats
Answer:
A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules: glycerol and fatty acids. Fats are made of long chains of carbon atoms. Some carbon atoms are linked by single bonds and others are linked by double bonds and a type of fat containing a high proportion of fatty acid molecules with at least one double bond, considered to be healthier in the diet than saturated fat.
Explanation:
good luck
Determine the mass of CO2 formed if 15 grams of C4H10
Answer:
[tex]m_{CO_2}=45gCO_2[/tex]
Explanation:
Hello there!
In this case, since the combustion of butane is:
[tex]C_4H_{10}+\frac{13}{2} O_2\rightarrow 4CO_2+5H_2O[/tex]
Thus, since the molar mass of butane is 58.12 g/mol and that of carbon dioxide is 44.01 g/mol, we obtain the following mass of CO2 product:
[tex]m_{CO_2}=15gC_4H_{10}*\frac{1molC_4H_{10}}{58.12gC_4H_{10}} *\frac{4molCO_2}{1molC_4H_{10}} *\frac{44.01gCO_2}{1molCO_2} \\\\m_{CO_2}=45gCO_2[/tex]
Best regards!
PLEASE HELP IMMEDIATELY I NEED THE ANSWER NOT A HINT THANK YOU
Cytoplasm: gel like environment which allows organelles to move about the cell
Golgi bodies: packages and ships materials out of the cell
Cell membrane: controls what goes in and out of the cell
Chloroplast: makes food for plant cells using sunlight
Lysosome: breaks down waste, food, and worn out cell parts
Mitochondria: breaks down food to release energy for the cell
Nucleus: contains the cell's DNA and is the control center of the cell
Endoplasmic reticulum: transports materials within cell; process lipids
Vacuole: stores water, waste and food
Ribosome: make proteins
Emma draws another diagram showing how adding energy affects this wave. How does her new diagram compare to this diagram?
A
Her diagram shows higher wavelengths.
B
Her diagram shows lower wave amplitudes.
С
Her diagram shows lower wave frequencies.
D
Her diagram shows higher wave amplitudes.
Answer:
I would say it’s either B or D
Explanation:
I don’t know if it’s asking about her current diagram
In the electromagnetic spectrum,adding energy to the wave will give higher wave amplitude as energy and amplitude are directly proportional.
What is electromagnetic spectrum?The electromagnetic spectrum consists of electromagnetic radiation consisting of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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Explain why this substance is formed?
Explanation:
About which substance you are talking?
All substances freeze at the same temperature, so they all have exactly the
same freezing point.
O True
O False
Answer:
I think it would be false
Explanation:
All things have a unique freezing/melting point
explain how the density of the crust, mantle, and core are related
to the position of these layers.
Brainlest will get 100 points
Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s mass. Finally, the core is mostly iron metal. The core makes up about 31% of the Earth. Lithosphere and asthenosphere are divisions based on mechanical properties. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow. This animation by Earthquide shows the layers by composition and by mechanical properties.
The unusually fast rate at which many glaciers globally are melting is due to
he lies of scientists
too many tree-huggers breathing
human induced Global Warming
political opinion
Answer: human induced global warming
Explanation:
It’s the only one that makes sense if you read the question
Which of the following formulas represents an empirical formula?
A. C8H18
B. C4H10
C. C2H5
D.C2H4
Answer:
C is the only option that represents an empirical formula, as it can't be simplified further.
You can turn C8H18, for example: to C4H9, but you can't do the same with C2H5.
Let me know if this helps!
Determine the molecular and empirical formulas for the substance shown in the ball-and-stick model below.
2. What is the molality of a solution in which 25 g of NaCl is dissolved in 20 kg of
water?
Answer:
0.21 m
Explanation
25 NaCl * 1 mole/58.44 g NaCl * 1/20 kg = 0.21 m
water is a ____ molecule meaning the positive hydrogen end attracts the negative oxygen ends of another
A. balance
B.universal
C. wet
D.polar
please answer! will give brainliest
Water is a polar molecule where, the positive hydrogen end attracts the negative oxygen ends of another water molecule. Thus, option D is correct.
What is polarity ?Polarity is ability of charge separation in a molecule. In some molecules, the positive and negative ends exists separately and both ends remains reactive towards the counter charged end of other molecule.
The charge separation in molecules results in a dipole moment. Permanent dipole moment make the molecule polar. Water is a polar molecule.
The shared pair of electrons in water are more attracted towards the electronegative oxygen atom leads the charge separation. This polarity helps to the formation of strong intermolecular hydrogen bonding.
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Calculate the mass of 6.02 x 10^23 formula units of iron (III) chloride, FeCl3?
Answer: 162.2 g
Explanation: 6.02 × 10^23 particles is one mole.
Molar mass of FeCl3 is 55.85 + 3· 35.45 = 162.2 g/mol
pls help will give brainilest or however you spell it
Answer:
1. balanced
2. balanced
3. unbalanced
4. balanced
5. balanced
6. unbalanced
7. balanced
8. unbalanced
Explanation:
What are prevailing winds
Answer:
a wind from the direction that is predominant at a particular place or season.
Explanation:
Brainlest is appriciated