Answer:
adenine, cytosine, uracil, and guanine.
Answer:
For DNA there is Adenine (A), Thymine (T), Guanine (G), and Cytosine (C)
For RNA there is Adenine (A), Uracil (U), Guanine (G), and Cytosine (C)
Explanation:
Why are noble gases called noble gases?
Answer:
comes from a translation of the German word Edelgas, which means noble gas.
Why Are Noble Gases Called Noble? The term “noble gas” comes from a translation of the German word Edelgas, which means noble gas. German chemist Hugo Erdmann coined the phrase in 1898. Like a nobleman might consider it undignified to associate with commoners, noble gases tend not to react with other elements.
Explanation:
hope it helps
which bulb/s would go out if the wire was cut where indicated in the following circuits?
answer quickly pls
Answer:
Ist one only A goes out
2nd B and C
3rd all.......
The danger from radon gas would most likely be greatest in:.
The danger from radon gas would most likely be greatest in well-insulated homes. It is a toxic gas.
What is radon gas?Radon is a naturally radioactive gas generated from different elements such as uranium or radium.
Radon is generated when these radioactive materials naturally decompose in the soils and/or rocks.
Radon is highly toxic and therefore this gas must be avoided to maintain healthy conditions in a home.
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Difference between magnesium oxide and magnesium citrate.
Explanation:
Magnesium citrate is the best absorbed form while Magnesium Oxide is not. Magnesium (Mg) Oxide is the most poorly absorbed form.
✓
PLEASE HELP 30 POINTS
Answer:
409g
Explanation:
Relation formulas
64.5g of Cu gives 216g of Silver
122g of Cu gives Xg of Silver
X = 409g
Consider the equations below. (1) Fe2O3(s) → 2Fe(s) 3 2 O2(g) (2) Fe2O3(s) 3CO(g) → 2Fe(s) 3CO2(g) Which equation must be added to equation (1) to produce equation (2)? Upper C upper O (g) plus one half upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g). 3 upper C upper O subscript 2 (g) right arrow 3 upper C upper O (g) plus StartFraction 3 over 2 EndFraction upper O subscript 2 (g). 3 upper C upper O (g) plus StartFraction 3 over 2 EndFraction upper O subscript 2 (g) right arrow 3 upper C upper O subscript 2 (g).
The equation is the representation of the chemical reaction. The reaction to be added to equation 1 to produce equation 2 is [tex]\rm 3\;CO\;+\frac{1}{2}\;O_2\;\rightarrow\;CO_2[/tex].
What is the chemical reaction?The chemical reaction is the change in the reactant for the formation of the product.
The given equation 1 has been:
[tex]\rm Fe_2O_3\;\rightarrow\;2\;Fe+2\;O_2[/tex]
The final reaction 2 has been:
[tex]\rm Fe_2O_3+3\;CO\;\rightarrow\;2\;Fe+3\;CO_2[/tex]
The reaction with carbon to utilize the reactant oxygen of reaction 1 forming carbon dioxide, results in reaction 2.
Thus, the reaction that must be added will be:
[tex]\rm 3\;CO\;+\frac{1}{2}\;O_2\;\rightarrow\;CO_2[/tex]
Thus, option A is correct.
Learn more about the chemical equation, here:
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Answer:
The correct answer is C.
Explanation:
I just got it correct on EDGE
What could humans do to make enough oxygen to survive?
Answer:
We could plant more trees :)
Explanation:
Trees producer oxygen AND absorb carbon dioxide, something our earth has too much of, thanks to humans
A substance with a weak molecular attraction is a gas. Explain what would cause the substance to change phase to a liquid. Include all of the following terms in your answer: kinetic energy, overcome, molecular attraction, and temperature.
Please help, I am also in 7th grade so I can't have this rly advanced answer, thank you!
Answer:
The kinetic energy of the molecule is greater than the attractive force between them. The kinetic molecular theory may be used to explain the behavior of solids and liquids.
Hope this helps, please let me know If I'm wrong.
Someone please answer i’ll give brainly.
How many atoms of carbon of 2 molecules of C3H8
Answer:
6 atoms of carbon
Explanation:
In one atom of C3H8 there is 3 atoms of carbon as there is a 3 next to it however of there is two atoms of this then it would double making it 6 atoms of carbon
What element is always present in an organic compound.
How many moles of water can be produced if 8 moles H2 are used?
The number of moles of water that would be produced will be 4 moles
Stoichiometric calculationsFrom the balanced equation of the reaction:
2H2 + O2 ---------> 2H2O
Mole ratio of H2 and H2O = 2:1
Mole of H2 = 8 moles
Equivalent mole of H2O = 8/2
= 4 moles
More on stoichiometric calculations can be found here: https://brainly.com/question/8062886
What type of reaction is Ch3ch3 + Cl2 -> CH3CH2Cl +Hcl
Answer:
displacement reaction..
Click the statement that best describes the role of each element in living organisms.
Carbon
.
Oxygen
.
Hydrogen
.
Answer:
Your answer would be
A.) Carbon
Explanation:
Carbon:
Living things want carbon to measure, grow, and reproduce. Carbon could be a finite resource that cycles through the planet in several forms. This makes carbon obtainable to living organisms and remains in balance with different chemical reactions within the atmosphere and in bodies of water like ponds and oceans.
Oxygen:
Cellular respiration describes the part of the organic process once food breaks right down to offer cells energy. Throughout internal respiration, cells use oxygen to interrupt sugar to provide ATP or nucleotides.
Hydrogen:
Hydrogen plays a vital role in energy production within the body. For our bodies to operate, they have to have energy within the type of nucleotide or ATP. Your body gains energy by overwhelming foods wealthy in substances like carbohydrates.
Have a great rest of your day
#TheWizzer
Answer:
Carbon- is a versatile element, and the basis of all living organisms.
Oxygen- is the most abundant element by mass.
Hydrogen- makes up %60 of the atoms in living organisms
edge, 2023
Explanation:
Please help me with 19-22 on my study guide
What amount of nacl (in moles) is required to prepare 250 cm3 of a 0.200 mol dm-3 solution?
Answer:
V = 250 cm3
= 250 × 10^(-3) dm3
= 1/4 dm3
no. of mole = 0.2×1/4 mol
= 0.05 molExplanation:
Total , 0.050 moles of sodium chloride (NaCl) is required to prepare 250 cm³ of a 0.200 mol/dm³ solution.
To calculate the amount of NaCl (sodium chloride) in moles required to prepare a 0.200 mol/dm³ solution in a volume of 250 cm³, you can use the formula:
Amount of substance (in moles) = Concentration × Volume
Given:
Concentration (C) = 0.200 mol/dm³
Volume (V) = 250 cm³
First, convert the volume to dm³:
Volume (V) = 250 cm³ = 250/1000 dm³
= 0.250 dm³
Now, use the formula to calculate the amount of NaCl in moles:
Amount of NaCl = Concentration × Volume
Amount of NaCl = 0.200 mol/dm³ × 0.250 dm³
Amount of NaCl = 0.050 moles
Therefore, 0.050 moles of NaCl is required to prepare 250 cm³ of a 0.200 mol/dm³ solution.
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What is the ecological importance of “cobbles” in the riffle of a stream?
Answer:
it increases the amount of oxygen in the water. kind of like how people whisk stuff to make it light and airy; the cobbles incorporate air in the stream. same with any other body of water that has cobbles.
that oxygen helps the life under the water survive. fish filter oxygen in their lungs. yes, some surface for oxygen too, but it can be in the water.
You are driving in a 55mph zone. If you speed up from 55 to 65, the odds of being injured in a collision:
The odd of being injured if a collision occurs as a result of increasing speed to 65 on a 55 mph road zone is 24%.
Speed limitSpeed limits are set for safety, to reduce the likelihood of crashes, and reduce the likelihood of getting injured should crashes occur.
In a report released by the National Cooperative Highway Research Program in 2006, breaching the maximum on a road with a speed limit increases the likelihood of crashes and getting injured as a result.
Specifically, increasing the speed to 65 on a road with a 55 mph speed limit increase the chances of crashes by 5% while increasing the chances of getting injured as a result by 24%.
More on speed limits can be found here: https://brainly.com/question/2832864
Find the density of a material, given that a 5.03g sample occupies 3.24ml ?
Answer:
Formula for density:
D = Mass / Volume
Mass = 5.03g
Volume = 3.24ml
Formula in our case:
D = 5.03 / 3.24
D = 0.31 g/m3
Hope this helped you :D
Where is osmosis seen in everyday life? Or why is osmosis important to plants or humans please define in your own words it’s for a lab!!
Answer:
Hey buddy!
Explanation:
Keeping the body's conditions stable makes it possible for living things to survive. Osmosis plays an important role in the human body, especially in the gastro-intestinal system and the kidneys. Osmosis helps you get nutrients out of food. It also gets waste products out of your blood.
please mark me as brainalist
Name the elements that make up sodium sulfate.
Answer:
Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na2SO4 as well as several related hydrates.
...
Explanation:
HOPE ITS HELP;)
2 NaOH + H2SO4 ------> 2 H2O + Na2SO4
How many grams of NaOH are required to produce 16 g H2O?
69 g NaOH
552 g NaOH
35.52 g NaOH
276 g NaOH
How many moles of aluminum oxide (Al2O3) are in a sample with a mass of 204. 0 g? 1. 000 2. 000 3. 0.
Answer:
1. 000.2
Explanation:
aluminum oxide made of moles or atoms less then other elements need to decrease
Hello! this is to my other post!
I would pick the shrimp because it has the most chromosomes so that is more protein we when you eat shrimp you are getting the most protein out of all of them
Explanation: put this in your own words please
It was cloudy and stormy in the morning but clear and sunny in the evening. Which statement describes the change in the weather condition throughout the day that would cause this change in weather?
A decrease in temperature
A change in precipitation form
An increase in pressure
A change in wind direction
Answer:
A change in precipitation form
How many grams are 1.20 x 1025 molecules of calcium iodide?
Answer:
1230
Explanation:
1.20×1025=1230 is your answer
While playing soccer, Carla slides across one of the lines on the field. When she stands up, what base does she dust off? calcium hydroxide ammonium hydroxide zinc hydroxide potassium hydroxide.
The soccer field has been placed with the outlines of the slaked lime. The chemical dust off from the falling has been calcium hydroxide.
What is slaked lime?The boundary wall to the soccer or the other field has been marked with slaked lime powder. The chemical has the ability to react with bacteria and act as a disinfectant.
The slaked lime chemically is a white powder of calcium hydroxide. Thus, after falling on the soccer field, the chemical dusted off by Carla is calcium hydroxide. Thus, option A is correct.
Learn more about slaked lime, here:
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Answer:
the is A or calcium hydroxide
Explanation:
i got this right just now since i took the test:)
Conner is testing the pH of a swimming pool and he finds it to be 6.5. The optimal pH for swimming is between 7.7 and 7.6. Conner adds a compound to the pool and waits a few hours. He retests the pool water and finds the pH to be 7.2. What did Conner do to raise the pH of the pool?
A) He added water to raise the pH.
B) He added a base to raise the pH.
C) He added salt to raise the pH.
D) He added an acid to raise the pH.
Answer:
B.) He added a base to raise the PH
Explanation:
Took test
Answer:
B
Explanation:
I took the test!
BRAINLIEST!! HELP!! The pure silicon used in silicon computer chips can be generated by the reaction of silicon tetrachloride with magnesium metal which generates solid silicon and solid magnesium chloride. You react 1.0 moles of silicon tetrachloride with 5.0 moles of magnesium metal and your target product is silicon.
Equation: ?
Limiting reactant; ?
Moles of target product produced: ?
Moles of excess reagent remaining: ?
Reaction
SiCl₄+ 2Mg ⇒ Si + 2MgCl₂
to find limiting reagents: divide the number of moles by their coefficients
SiCl₄ = 1 mole : 1 (coefficient) = 1
Mg = 5 mole : 2 (coefficient) = 2.5
SiCl₄ as a limiting reactant (smaller), and Mg as an excess
then all the compounds involved in the reaction are based on moles of SiCl₄
Si produced =
[tex]\tt \dfrac{coefficient~Si}{coefficient~SiCl_4}\times mole~Si=\dfrac{1}{1}\times 1=1[/tex]
Reacted Mg (excess) = 2/1 x 1 = 2 mole
mole Mg remaining = 5 - 2 = 3 mole
TRANSLATING WORD EQUATIONS:
PRACTICE ASSIGNMENT
Write balanced chemical equations for each of the following scenarios and identify the
type of reaction.
1. Liquid water added to solid calcium oxide produces aqueous calcium hydroxide.
Type:
H₂O toca (99) Call₂OH
2. Aqueous iron (III) chloride and sodium carbonate solution yields aqueous sodium
chloride and a precipitate of iron (III) carbonate.
Type:
(aq) Fe, CI H + 5 C03 SCIH -- fez coz
3. When fluorine gas is put in contact with calcium metal at high temperatures, calcium
fluoride powder is created.
Type:
F) + CF
Answer:
When calcium oxide (chemical formula: CaO) reacts with water (chemical formula: H
2
O), the following reaction takes place:
CaO+H
2
O→Ca(OH)
2
he product of this reaction is calcium hydroxide, also known as slaked lime.
Thus, when calcium oxide reacts with water, slaked lime is produced.
Calcium oxide is also known as lime and is most commonly used for many purposes. It can be used for pH correction of water or for its disinfection (with excess lime). More importantly, lime has been used for a very long time to produce calcium carbonate by reaction with carbon dioxide. Calcium carbonate has been used as mortar for sealing the gaps between bricks, stones, etc.
The reaction for the production of calcium carbonate is:
CaO+CO
2
→CaCO
3
In reality the reaction is a two-step process, with formation of slaked lime in the first step and reaction of slaked lime with carbon dioxide to form calcium carbonate in the second.
Explanation:
the kitchen lights are wired in series. how would you know this without seeing the wiring?
Answer:
If you turn off one light bulb, then the others would go out. If one burns, the others burn, too. Do an experiment.
Explanation:
All household electrical circuits are wired in parallel with each other; there's nothing special about fluorescent lights. This is so that the full 120 volts is presented to each device. If you put devices in series, they will "share" the voltage, say 70 volts to one device and 50 volts to the second (adding up to the 120 volts in the circuit).
