Answer:
substitutions, deletions and insertions
The four structures that both prokaryotic and eukaryotic cells have are
Hello! Greetings from Turkey! :)
* Cell membrane
* Cytoplasm
* DNA and RNA
* Ribosome
GOOD LUCK!!
A model is simplified version of a more complex idea or system. It useful to help us understand something we can't actually see
A) true
B) false
Answer:
I feel like the answer is A) true
Explanation:
you create a model to help your audience understand your complex idea. There have been models made to represent ideas that we cannot see.
How many liters of ammonia gas can be formed from 24.5 L of hydrogen gas at STP?
Answer: 16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
The balanced chemical equation is:
[tex]3H_2+N_2\rightarrow 2NH_3[/tex]
According to stoichiometry :
[tex]3\times 22.4=67.2L[/tex] of [tex]H_2[/tex] produce = [tex]2\times 22.4=44.8L[/tex] of [tex]NH_3[/tex] at STP
Thus 24.5 L of [tex]H_2[/tex] will produce= [tex]\frac{44.8}{67.2}\times 24.5=16.3L[/tex] of [tex]NH_3[/tex] at STP
Thus 16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP
What fossil helped support Wegener's hypothesis of continental drift?
A. Gondwanaland
B. Kannemeyerid
C. Mesosaurus
D. Glossopteris
Answer:
Glossopteris
Explanation:
Glossopteris is a fossil fern that helped support Wegener's hypothesis.
Hope this helps! Have a great day!
How did the us stop the spread of communism during the Cold War
Answer:
With the policies of containment, the United States hoped to effectively stop the spread of communism and their newest threat. After the war, the United States and the Soviet Union had very different ideas on how to rebuild.
Cyanobacteria, also known as blue-green algae, are a kind of bacteria found in lakes. These organisms make their own food through photosynthesis. Small animals including mayfly larvae eat the cyanobacteria, and small fish such as yellow perch eat the larvae. The small fish provide food for larger fish, such as walleye.
Choose the level of the food pyramid that represents the energy role of cyanobacteria in the lake ecosystem.
How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2? How many moles of mercury is produced?
Laughing gas (nitrous oxide, N2O) is sometimes used as an anesthetic in dentistry. It is produced when ammonium nitrate is decomposed according to the following reaction.
NH4NO3(s) ---> N2O(g) + H2O(l) How many grams of NH4NO3 are required to produce 33.0 g N2O? and How many grams of water are produced in this reaction?
Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)
Explanation:
what type of cells are these?
(Plant or animal)
Answer:
5 is an animal cell, 6 is a plant cell
Explanation:
hope this helps!
Which of these is a learned behavior of a dog?
1.Begging for food
2.Drinking water
3.Panting on a hot day
4.Chewing on a bone
what Is The Use Of Sulpurdioxide
Sulfur dioxide is used as a food preservative, disinfectant, etc.
what is the name for a change in the enviorment that causes an organism to change it's activity
PLEASE HELP BY TODAYYYY!!!
A, brain
B,Response
C, Parasite
D,stimulus
Answer: it’s D
Explanation:an event that provokes a specific functional response in an organ or tissue of an organism is called as stimulus
hope it helps
In the above equation how many moles of NO can be made when 43 moles of HNO3 are consumed?
Answer:
rn4y8rg7348y0rp934nrf3
efjewhrf8h934hfr84398wgfyu8o
Explanation:
fe8u34h4n3urhu93q4pirnpqr34uwbry8439br8u3i2rpi34ofreuebue rf ef erf3rw wg
A student prepares four different aqueous NaCl solutions according to the table. Which solution will have the highest molarity?
Brainly is erroneously blocking my answer from being posted due to nonexistent profanity and/or links, so I have attached an image of my written response. Please let me know if you have any problems seeing it.
definition of atomic number
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons.
Answer:
its basically represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines the place of the element in the periodic table
Explanation:
sry i its too long
hope it helps
Which explains why mixtures can be separated?
A The components have different properties.
B The components have the same properties.
C The components are always made of small particles.
D The components are always made of large particles.
Answer:
A
Explanation:
In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.
Answer:
A
Explanation:
Mixtures can be separated because the different substances have different properties
Please help me!!!!!!!!! :-]
Is there massless ness in space?Why?
At a football stadium, 5% of the fans in attendance were teenagers. If there were 160 teenagers at the football stadium, what was the total number of people at the stadium?
Answer:
yes
Explanation:
bc god exist
Answer:
3200
Explanation:
A3.00 mol sample of CO2 (g) is in a rigid 6.00 L container at 400.°C.
Which of the following is the pressure of the gas?
16.4 atm
27.6 atm
200. atm
995 atm
Answer:
i'm thinking 27.6 not sure
Explanation:
Show work for all math problems. Make sure to have the correct unit and significant figures in your each answer.
Convert 2.35 atm to mmHg.
What is the molarity of .65 L of solution containing 63 grams of NaCl? (dont forget to convert grams to moles)
Answer:
1.66 M
Explanation:
Molarity = moles/L solution
We have the following data:
mass NaCl = m = 63 g
volume of solution = V = 0.65 L
Thus, we first convert the mass to moles with the molar mass of NaCl (MM):
MM(NaCl) = 23 g/mol Na + 35.4 g/mol Cl = 58.4 g/mol
moles NaCl = m/MM = 63 g/(58.4 g/mol)= 1.08 mol
Finally, we divide the moles into the volume of solution to calculate the molarity:
M = moles NaCl/V = 1.66 mol/L
What type of substances can we separate using electrolyisis and why?
Answer:
ionic substances because they contain charged particles
11. A chemical reaction happens when chemicals combine to form a new _______
Answer:
substances
Explanation:
A chemical reaction happens when substances break apart or combine to form one or more new substances.
^Hope it helps, Hazel^
what is the formula for chlorine monobromide
Based on how to wrire chemical formulae, the formula for chlorine monobromide is BrCl.
What is chlorine mononbromide?Chlorine monobromide is a covalent compound formed from the covalent combination of chlorine and bromine.
The covalent bond is formed from the sharing of electrons between atoms chlorine and bromine.
Br2 + Cl2 ---> 2 BrCl
Tye formula of chlorinr monobromide is BrCl.
It is also known as bromine monochloride.
Therefore, the formula for chlorine monobromide is BrCl.
Learn more about chemical formula at: https://brainly.com/question/2778716
Clasifica cada uno de los siguientes incisos como sustancia pura (elemento y compuesto) o mezcla (homogénea y heterogénea). Explica brevemente. (a) arroz con leche (b) agua de mar (c) magnesio (d) gasolina
Answer:
Ver explicacion
Explanation:
Un arroz con leche es una mezcla heterogénea porque está compuesto por partículas sólidas de diferentes tipos y tamaños.
El agua de mar es una mezcla homogénea de sustancias todas en la misma fase.
El magnesio es una sustancia pura y es un elemento.
La gasolina es una mezcla homogénea de sustancias comúnmente utilizadas como combustible.
It take 38.70cm³ of 1.90 NaO4 to neutralize 10.30cm³ of H2So4 in a battery. Calculate the molar concentration of H2So4
Answer:
The molar concentration of base Cb = 14.2777M
Explanation:
Volume of acid Va = 38.70cm^3,
Concentration of acid NaO4 C_a= 1.90M
Volume of Base Vb = 10.30cm^3
Also, Equation of the reaction
H2SO4 + 2NaOH = Na2SO4 + 2H2O
No of mole of acid Na = 1
No of mole of base Nb = 2
CaVa/CbVb = Na/Nb
Cb = CaVaNb/VbNa
Cb = 1.9×38.7×2/(10.30×1)
Therefore, Cb = 14.2777M
The molar concentration of base Cb = 14.2777M
what ive learned about heat,sound and light
Answer:
they are all in parts of our life and we need them each for surviving.
Explanation:
Acids are what and can destroy your skin and bones.
Answer:
Yes
Explanation:
Hydrofluoric acid (HF) differs from other acids because the fluoride ion readily penetrates the skin, causing destruction of deep tissue layers, including bone.
Two containers, illustrated below, are filled with the same amount and the same kind of ideal gas.
Which statement correctly describes the relationship between the contents of the two containers?
Container 1 particles have higher average kinetic energy and higher temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and lower temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and lower temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Container 1 and Container 2 particles have the same average kinetic energy and the same temperature.
Container 1 and Container 2 particles have the same average kinetic energy and the same temperature.
Answer:
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Explanation:
Kinetic energy is the speed of the particles in the bottle.
As you can see in the illustration below, the patricles in Picture 2 are moving faster than the ones in Picture 1.
The tempature of Container 1 is higher because all of the particles are sitting on top of one another. Not being able to move, their pressure builds up and creates heat.
zinc + hydrogen arsenate—>
What type of reaction is this? (Synthesis, Decomposition, or Single Replacement?
Answer:
Single Replacement
Explanation:
im just smart lol
