Answer:
hey are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic mattet.
Explanaticuz im naruto uzamaki
Sound waves cannot pass through one another.
A. True
B. False
fill in the blanks
the law of conservation of energy states that energy cannot be ______ nor _____.
Answer:
created nor destroyed.
the lens of the eye is clear so that light can go through.
A. True
B. False
Answer:
true
Explanation:
the clear lens over the eye is called the cornea
The twin Keck Observatory telescopes (pictured) are able to detect
electromagnetic waves with a wavelength of 10 meters. Use the following
electromagnetic spectrum to correctly determine the type of wave the
telescopes detect?
A: visible light
B:Microwave
C:Ultraviolet
D: X -Ray
Answer:
From Hawaii’s Maunakea, astronomers around the world use W. M. Keck Observatory to observe the universe with unprecedented power and precision.
The twin Keck Observatory telescopes are the world’s most scientifically productive optical and infrared telescopes. Each telescope weighs 300 tons and operates with nanometer precision. The telescopes’ primary mirrors are 10-meters in diameter and are each composed of 36 hexagonal segments that work in concert as a single piece of reflective glass.
In the middle of the Pacific Ocean, Hawaii Island is surrounded by thousands of miles of thermally stable seas. The 13,796-foot Maunakea summit has no nearby mountain ranges to roil the upper atmosphere. Few city lights pollute Hawaiian night skies, and for most of the year, the atmosphere above Maunakea is clear, calm and dry -— offering the best seeing on Earth.
Answer:
give them brainliest
Explanation:
In a circuit that has a total current of 4 amps with 4 lightbulbs wired in parallel, what is the current at each bulb?
Answer: 1 A for each lamps
Explanation: we assume lamps are similar and lamps have same resistance.
Then current is divided according Kirchhoff s law equally to all lamps.
The close packing of particles in solids results in
Answer:
Close packing in crystals refers to space efficient arrangement of constituent particles in a crystal lattice. To understand this packing more clearly we have to assume all particles (atoms, molecules and ions) are of the same spherical solid shape. So the unit cell of a lattice is a cubic shape.
Explanation:
Hope it helps! Correct me if I am wrong :>
Im sure about my answer :>
If you dont mind can you please mark me as brainlest?
2, 3-diethyl–4-octene what is structure of this pls help
Answer:
(CH2CH3).
!
CH-CH-CH-CH=CH-CH2-CH2-CH3
!
(CH2CH3)
2, 3-diethyl–4-octene
i am not sure.
In a 250.0 g sample of ammonium sulfate, how many moles of ammonium ions are present?
Answer:
1.89 mol
Explanation:
in 250 g of ammonium sulfate 1.89 moles are present
Question 7 (1 point)
A sample of a gas has a pressure of 0.895 bar when the volume is 318 L. What is the
pressure of the gas when the volume is 125 L?
Answer:
2.28bar
Explanation: Boyle's law P1V1=P2V2 manipulate formula in favor of V2 the new formula should beP1V1/V2
0.895*318/125=2.2768 but to same sigfig it is 2.28
Draw a line to connect the following terms to their definition.
NEED HELP ON THIS NOW PLEASE
Answer:
A. Bees bringing pollen from the flower of one plant to the flower of another plant.
Explanation:
Genetic diversity in organisms is enhanced by the process of sexual reproduction due to the meiotic process that the participant organisms undergo to produce gametes. A process unique to meiosis called CROSSING OVER ensures that the alleles of genes are recombined in the GAMETE or sex cells.
According to this question, POLLINATION, which is the transfer of pollen from a male flower to a female one, will lead to sexual reproduction via fertilization. However, a cross-pollination, which requires a pollinator like the bees in this question will ensure the most genetic diversity among the offsprings.
which of the following is the ether- containing analgesic drug (pain fever reducer) that likely contributed to the death of famous aviator howard hughes
Answer:
Happy Birthday HAHAHAHAHAYAHYAHAHAH
Phenacetin is the ether-containing analgesic drug that is likely to contribute to the death of famous aviator Howard Hughes.
What is phenacetin?It is a drug used for relieving pain and reducing fever.
It was taken off the market as a medicine in the 1970s because it was deemed hazardous.
This was the reason for the death of the famous aviator Howard Hughes.
The chemical formula of [tex]\rm C_1_0H_1_3NO_2[/tex].
Thus, the correct option is C, phenacetin.
Learn more about phenacetin
https://brainly.com/question/6993133
What are the two most abundant chemicals in air?
Answer:
The most abundant chemical/gas is Nitrogen, which makes up about 78% and Oxygen at second place with approximately 21%
Answer:
Nitrogen and Oxygen because about 70% of air is nitrogen and around 20% of air is Oxygen.
Hope this helps!
What are the similarities and differences between polyatomic ions and monoatomic ions?
Answer:
similarities: they both carry a charge
differences:
polyatomic ion- composed of more than one atom
monatomic ion- composed in a single atom.
uses of carbon dioxide.
Answer:
hello can you follow me
Explanation:
used in fire extinction, blasting rubber, foaming rubber and plastic
Which of would be The acid-base pair that can create NaCL with water?
A)LiCland NaOH
B)HCl and NaOH
C)Cl2 and KaI
D)BaO + KO
Answer:
i
Explanation:
Answer:1
Explanation:v
Which of the following has the highest viscosity?
A. Honey
B. Milk
C. Water
D. Oil
The highest viscosity has honey
Answer:
The highest viscosity is honey.
What are the spectators ions in this reaction?
Answer:
Option C. Na⁺(aq) and Cl¯(aq)
Explanation:
From the question given above, we obtained the following:
Na₂SO₄(aq) + CaCl₂(aq) —> CaSO₄(s) + 2NaCl(aq)
Ionic Equation:
2Na⁺(aq) + SO₄²¯(aq) + Ca²⁺(aq) + 2Cl¯(aq) —> CaSO₄(s) + 2Na⁺(aq) + 2Cl¯(aq)
From the ionic equation above, we can see that Na⁺(aq) and Cl¯(aq) are present on both side of the equation.
Therefore, Na⁺(aq) and Cl¯(aq) are the spectator ions because they did not participate directly in the reaction.
some important points for hadpicking
Answer:
Handpicking right?
It is a very simple and easy method of separation. It doesn't require any kind of equipment to proceed. It takes very less time when performed for small quantity of mixture. It doesn't require any kind of preparation
Given the unbalanced equation:
_C3H8(g) + _O2(g) -> _H2O(g) + _CO2(g)
When the equation is completely balanced using
smallest whole numbers, the coefficient of O2
Answer:
C3H8 + 502 ----> 3CO2 + 4H20
Explanation:
What is the concentration of a 500 mL solution with 25 mol of HF? Write your answer with TWO decimal places and round accordingly. ______M
Answer:
23
Explanation:
The concentration of the solution is given as the ratio of the moles and the volume of the solution. The concentration of hydrogen fluoride is 50 M.
What is molarity?Molarity is the colligative property that is expressed in the terms of the moles of the solute expressed per liter of solution. It is given by the formula:
[tex]\rm Molarity = \rm \dfrac{\text{moles of solute}}{ \text{liters of solution}}[/tex]
Given,
Volume of solution (V) = 0.5 L
Moles of the solute (n) = 25 moles
Molar concentration (M) = ?
Substituting values in the equation we get:
[tex]\begin{aligned} \rm M &= \rm \dfrac{n}{V}\\\\&= \dfrac{25}{0.5}\\\\&= 50\end{aligned}[/tex]
Therefore, 50 M is the concentration of 25 mol Hydrogen fluoride.
Learn more about molarity here:
https://brainly.com/question/13565497
Decreasing the volume of a gas would _______________. A. Decrease the temperature. B. Increase the amount liters. C. Decrease the moles. D. Increase the pressure.
Answer:
D. Increase the pressure.
Explanation:
Okay, lets break this down.
So first, lets imagine what decreasing the volume looks like. I like to think of it as squishing a balloon or water bottle. You condense what's inside it. So, with this in mind, lets look at the question.
A. Decrease temperature:
Does this happen when you squeeze something? It gets colder? No, that's not true. So we can eliminate that one.
B. Increase the liters:
Does this happen when you squeeze something? It gets larger? It takes up more space? No, that's not true. So we can eliminate that one.
C. Decrease in moles:
Okay, so moles is just a fancy way of saying "stuff." So does the amount of "stuff" decrease when you squeeze something? No, it just gets closer together. It's denser. So we can eliminate that one.
D. Increase the pressure:
Now we're getting somewhere!! When you squeeze a balloon, the pressure DOES increase because you are condensing the gas inside it. That's why balloons will pop if you squeeze too hard, the pressure is too great and has to escape. So yes, this is your answer.
Answer: D. Increase the pressure
Which element's properties form the basis for all life?
Answer:
carbon
Explanation:
The properties of carbon forms the basis for all life. Explanation: The atoms of carbon are found in the molecules of all living species.
What's the mass in grams of 0.334 moles of sucrose (C12H22O11)?
Answer:
114.23g
Explanation:
Mass = xg
Mole = 0.334 mol
Molar mass of Sucrose
(C = 12, H = 1, O = 16)
C12H22O11
(12×12)+(1×22)+(16×11)
144 + 22 + 176
342g/mol
Mass = No of mole × Molar mass
Mass = 0.334 × 342
Mass = 114.228
Mass ≈ 114.23g
What volume, in mL, of 0.100 M NaOH is required to neutralize 35.0 mL of 0.102 M hydroiodic acid HI?
Answer:
35.7 mL NaOH
Explanation:
M1V1 = M2V2
M1 = 0.100 M NaOH
V1 = ?
M2 = 0.102 M HI
V2 = 35.0 mL
Solve for V1 --> V1 = M2V2/M1
V1 = (0.102 M)(35.0 mL) / (0.100 M) = 35.7 mL NaOH
Take your time please.
1. Dependant Variable
2. Scientific Method
3. Data
4. Consistency
5. Metric Balance
6. Mean
7. Technology
8. Dependant Variable
9. Hypothesis
10. Spring Scale
Explanation:Hello! I hope this helped and please correct me if some are wrong. I did my research and matched them. Have a good one!
(>‿◠)✌Answer:
dependent variablescientific methodDataconsistency metric balancemeantechnologydependent variablehypothesisspring scalehope it is helpful to you
An element cannot be broken down into other substances by chemical or physical means. But you can still split a sample of an element into smaller pieces. For example, a piece of aluminum foil can be cut in half and then in half again, and all of the pieces will still be aluminum.What do you think will eventually happen if you could continue dividing that piece of aluminum foil
You will reach the smallest possible piece of the aluminum.
You will divide the aluminum into two smaller elements.
You will continue dividing the aluminum forever into smaller and smaller pieces.
You will reach a point at which there is no matter left.
Answer:
You will reach the smallest possible piece of the aluminum.
Explanation:
You will not be able to physically separate the aluminum into two smaller elements; aluminum is already a pure elemental substance. It will not divide forever, at some point it will be as small as you can possibly make it. However, you won't be able to erase the matter completely -- it will just become very very small!
g the following statements as they apply to gas chromatography. Decide if each is true or false. The technique referred to as gas chromatography is actually gas-liquid chromatography since the stationary phase is a liquid adsorbed on the surface of an inert solid. To be separated using GC, analytes must be volatile. An air peak is commonly used to determine the dead time when using a TCD detector. An FID is insensitive to non-combustible gases such as water and carbon dioxide. A column temperature equal to or slightly above the average boiling point of the sample components results in a reasonable elution time.
Answer: To be separated using GC, analytes must be volatile.
An air peak is commonly used to determine the dead time when using a TCD detector.
An FID is insensitive to non-combustible gases such as water and carbon dioxide.
A column temperature equal to or slightly above the average boiling point of the sample components results in a reasonable elution time.
Explanation:
The gas chromatography works on the principle of separation of gaseous substances based on the differences of vapor pressure. The thermal conductivity detector works on the principle of detection of effluents from the has chamber and the air peak gives indication of the retention time of the effluents. Flame ionization detector can be used for the detection of organic compounds but insensitive for the detection of halogens, non-combustible substances like carbon dioxide and water. The temperature of the column is kept higher than the average boiling point of the substance so as to attain separation of substances by the differences in the elution time.
I need help please <33
Answer:
Option 3 is correct.
The atomic nucleus of each element has a unique number of protons. Therefore, the energy of the electron layers of the atoms of each element is unique.
If we have the energy released from each electron transfer between the layers of the atom, we can identify the element.
Is this statement true or false?
All gymnosperms lose their leaves in the winter.
Answer:
they do fall off of themselves
Answer:
True!
Explanation:
They usually fall off in the winter
