Carbohydrates are made up of three of the six major molecules found in living things. The general chemical formula for a carbohydrate is CH2O. Which elements combine to make a carbohydrate? Explain why the answer is correct. A. copper and colbat B. chlorine and oxigen C. carbon, helium and oxygen D. carbon, hydrogen and oxygen. Please answer ASAP
A (n) blank is a vent or fissure in the earths surface through which magma and gases are expelled
Answer:
Volcanoes
Explanation:
The volcanoes are the features on the earth's surface through which the magma comes out along with other gases.
The formation of the volcano is associated with the divergent and the convergent type of plate boundary. Due to this motion and subduction of heavier plates, the plates at greater depth melts and mixes up with the uprising magma. This magma then rises up towards the surface in the over-riding plate, forming volcanoes, from where the magma erupts on the surface forming lava along with the emission of various gases such as carbon dioxide, sulfuric acid, and hydrogen sulfate.
The air in a cylinder of a diesel engine occupies 945 mL at 29oC and 1.00 atm. What is the pressure in the cylinder when the air is compressed to 67.5 mL and heats to 2000oC for an instant when the fuel explodes. What is the pressure of the gases in the cylinder at this instant before expansion occurs?
Explain why the following statements are true:
1) All matter is made up of atoms.
2) An electron with a proton equals a neutral charge.
3) All atoms are in constant motion.
please explain using complete sentences
what is the molecular formula of compound x?
What is a physical property of water?
A) liquid at room temperature
B) not flammable
C) pH of 7
D) reacts with sodium
How many moles of Ca(OH)2 are in 3.5kg of Ca(OH)2? Answer in units of mole
Answer:
47.3 moles of [tex]Ca(OH)_2[/tex] are in 3.5 kilograms of [tex]Ca(OH)_2[/tex].
Explanation:
[tex]n=\frac{m}{M}[/tex]
Where:
n = Moles of the compound
m= Given mass of the compound
M = Molar mass of the compound
Mass of the calcium hydroxide, m = 3.5 kg = 3500 g (1kg = 1000 g)
Molar mass of the calcium hydroxide = M = 74 g/mol
Moles of calcium hydroxide = n
[tex]n=\frac{3500 g}{74 g/mol}=47.297 mol\approx 47.3 mol[/tex]
47.3 moles of [tex]Ca(OH)_2[/tex] are in 3.5 kilograms of [tex]Ca(OH)_2[/tex].
Explain why the following statements are true:
1) All matter is made up of atoms.
2) An electron with a proton equals a neutral charge.
3) All atoms are in constant motion.
please explain using complete sentences and will give brainliest to the best answer
PLEASE EXPLAIN ALL OF THE CHOICES!!!!! THX
which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?
Answer:
Mithocondria
Explanation:
Mitochondrias are cellular organelles responsible for supplying most of the energy necessary for cellular activity. They synthesize ATP from nutrients such as glucose, fatty acids and amino acids.
ATP (adenosine triphosphate) is the main source of energy for most cellular functions. It is composed of a nitrogenous base attached a pentose type sugar and three phosphate groups.
A molecule contains 24.36g of N and 62.64 g of Ag. What is its empirical formula
Answer:
AgN3
Explanation:
how many liters of laughing gas are in 0.98 moles stp
3H2 + N2 ===> 2NH3
GIVEN: 44.8 L of H2 at STP.
answer: mols of N2.
By applying ideal gas equation,
[tex]P\times V=n\times R\times T[\tex]
Where, P= pressure of gas
V=volume of gas
R=Gas constant
n=Number of moles of gas
T=Temperature
At STP, each gas has a defined value of pressure, volume and temperature.
P= 1 atm
R=0.0821 L atm mol⁻¹ K⁻¹
T= 0°C or 273 K
Putting all the values in the equation will give:
[tex]1\times V=0.98\times 0.0821\times 273[\tex]
V = 22 L
So the answer is 22 L.
What device used to measure the heat transferred from one substance to another?
A What does the data tell us? Using the storm data and the computer model, check all statements that are true.
B The majority of hurricanes originate around the equator.
C A valid hypothesis for the research would be: As sea surface temperatures increase hurricane intensity.
D Although the number of hurricanes in the West Pacific Ocean has declined over the years, the intensity of the hurricanes has increased.
E According to the scientists' future projections, the frequency of hurricanes will increase throughout the world.
It has to be more than 1 i thank it has to be 2 or 3 please help me someone thank you:)
It's A, B, and D. This question was also in my homework.
How many grams of He are present in 8.0 L of gas at STP
As part of a science experiment, Jose did a test for starch on a slice of apple and a slice of potato. The yellow-orange iodine solution stayed the same color when it was put on the apple, but it became black on the potato. Why did the iodine solution change color on the potato? A. The iodine evaporated into a gas. B. The iodine mixed with the colors of the potato so it looked black. C. The iodine burned the potato and turned it to ash. D. The iodine reacted with the potato to form a new substance.
Answer:
The iodine reacted with the potato to form a new substance.
Explanation:
Which statement describes the valence electrons in metallic bonds?
Answer:
They are shared among many atoms.
Explanation:
In metallic bonds, the valence electrons of interacting metal atoms from s and p orbitals are delocalized. Therefore, instead of revolving their respective metal atoms they form a sea of electrons.
Therefore, the positively charged atomic nuclei of the interacting metal ions gets surrounded by this sea of electrons.
Hence, we can conclude that the valence electrons in metallic bonds are shared among many atoms.
Final answer:
Valence electrons in metallic bonds are delocalized, allowing them to move freely and contribute to properties like conductivity and malleability. The metallic bond consists of the attraction between cations and a 'sea of electrons,' resulting in varying strengths and melting points for different metals.
Explanation:
The valence electrons in metallic bonds are delocalized, which means that they do not belong to any one atom but are free to move about the entire metal structure. The metallic bond is characterized by an electrostatic attraction between the positively charged nuclei, known as cations, and these free-moving, or delocalized, valence electrons. This forms a 'sea of electrons' that is responsible for many properties of metals such as conductivity, malleability, and ductility.
In solid metals, these valence electrons can move relatively easily throughout the crystalline lattice, forming an attraction with positive ions. The strength of these bonds varies, but typically metallic bonds are weaker than ionic or covalent bonds, with dissociation energies ranging from 1 to 3 eV. Some metals have very high melting points and are hard, while others are softer and have lower melting points, primarily depending on the number of delocalized electrons.
Helpp pleaseeeeeeeee
Answer:
The Sarah will arrive at 5.00 P.M..
Explanation:
Distance covered by Sarah = D = 30 miles
Time taken by Sarah to travel 30 miles = T
Speed by which Sarah cycling = S = 10 mile/hr
[tex]Speed=\frac{Distance}{Time}[/tex]
[tex]Time = \frac{Distance}{Speed}[/tex]
[tex]T=\frac{30 mile}{10 mile/hr}=3 hr[/tex]
Sarah will reach her grandmother's house in 3 hours.
If she leaves the home at 2.00 P.M. ,then she will reach at her grandmother's house by 5.00 P.M..
Through which of the following processes is carbon directly transferred between living organisms and the environment?
Answer:
The answer is carbon cycle.
Explanation:
The carbon cycle is an important process for living organisms. As plants prepare their food through photosynthesis and is also an important source of fossil fuels for human activities.
Therefore carbon atoms are regenerated again and again in the carbon cycle process. This recycling process takes place between livings and nonliving things in the environment and also within the earth biosphere.
Abundance supply of carbon is necessary to carry out the biological processes. The entire carbon cycle is actually made up of sourced and sinks elements.
Solar Nebula definition
The solar nebula is the original rotating cloud of gas and dust that formed the solar system, which under its gravity collapsed to form the Sun at its center, with the remaining materials eventually forming the planets and other celestial bodies.
Explanation:Definition of Solar Nebula
The term solar nebula refers to the vast, rotating cloud of gas and dust from which the solar system was formed about 4.5 billion years ago. This flattened cloud of cosmic raw material is the precursor to the sun and the planets in our solar system. As gravity caused the solar nebula to collapse, it became hotter and denser at its center, forming the Sun. The remaining material then coalesced into the planets, moons, and other bodies that orbit the Sun. Similarly, the Orion Nebula is a current example of a stellar nursery, where new stars and planets are being formed, likened to a contemporary analog of our own early solar nebula. Unlike the solar nebula which has completed its lifecycle, many young stellar nebulas or circumstellar disks can be observed today, reflecting various stages in the planetary formation process.
6.24 x 10^24 atoms Na to moles Na
Sunlight is energy that comes from the sun. How is that energy produced?
A. Molecules break down, releasing chemical energy.
B. Uranium atoms split apart, releasing nuclear energy.
C. Hydrogen atoms fuse together into Helium, releasing nuclear energy
D. Molecules are created, releasing chemical energy
I'm pretty sure its C but I want to get a second opinion.
Answer:
the answer is C
Explanation:
this is the reaction that happens inside the sun: every four Hydrogen Ions fuse together forming on Helium Ione and the difference in mass between the four Hydrogen Ions and the one Helium Ione is converted into nuclear energy.
How many moles of BaSO4 are formed if 0.5 moles of Na2 SO4 react with 60 g of BaCl2? Na2 SO4 + BaCl2 → BaSO4 + 2NaCl
Answer: 0.29
Explanation:
[tex]Na_2SO_4+BaCl_2\rightarrow BaSO_4+2NaCl[/tex]
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\textMolar mass}}[/tex]
Putting values in above equation, we get:
[tex]\text{Moles of}BaCl_2}=\frac{60g}{208g/mol}=0.29mol[/tex]
Moles of [tex]Na_2SO_4[/tex] = 0.5 moles
According to stochiometry, 1 mole of [tex]BaCl_2[/tex] reacts with 1 mole of [tex]Na_2SO_4[/tex]
Thus 0.29 moles of [tex]BaCl_2[/tex] will react with 0.29 moles of [tex]Na_2SO_4[/tex]
Thus [tex]BaCl_2[/tex] is the limiting reagent as it limits the formation of products and [tex]Na_2SO_4[/tex] is the excess reagent.
1 mole of [tex]BaCl_2[/tex] produces = 1 mole of [tex]BaSO_4[/tex]
0.29 moles of [tex]BaCl_2[/tex] will produce= 0.29 moles of [tex]BaSO_4[/tex]
What is a type of mineral
Will mark as Brainliest.
Which of the following is an exothermic reaction?
melting ice
dissolving ammonium nitrate in water to cool the water
dissolving sugar in water
condensation
which of these are the largest? asteroids, comets, meteors, or are they all the same size?
Answer:
most likly comets but could be asteroids
Explanation:
hope it helps sorry the there wrong depeest apologise thanks
How many atoms are In B2H4
What are ways that we can respond to eliminate an invasive species? Choose all that apply.
biological control by using other living organisms to rid of invasive species
chemical control by use of chemicals
sun control
physical control by physically removing the speicies
The ways by which we can respond to eliminate an invasive species can be of a biological control, or by any physical hindrance or chemical control.
What are invasive species?The organisms which are migrating to an area which is not its habitat but becoming threat to the organisms which are inhabitants there. These kind of organisms might destroy other small organisms or their resources of shelter and food.
The invasive species can be controlled by physical means such as putting some barriers or making some cages or related strategies to trap them. Other ways is that allotting other living organisms to get rid of the invasive species.
We can use some chemical controls as well, where the chemical used must be non-toxic and cause no more threat to nature. Therefore, except sun control, all other methods can be used.
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the gas left in an used aerosol can is at a pressure of 103 kPa at 25 degrees celsius if this can be thrown into fire what is the pressure of gas when it's temperature reaches 928 degrees Celsius
Answer:
415.11 kPa
Explanation:
The gas law to be applied here is Gay-Lussac's law. Gay-Lussac's law states that the pressure of a given mass of gas is directly proportional to it's temperature (in kelvin) provided volume remains constant.
The formula for the law is
P₁/T₁ = P₂/T₂
where P₁ is initial pressure (103 kPa)
P₂ is final pressure (unknown)
T₁ is initial temperature (25°C + 273 = 298K)
T₂ is final temperature (928°C + 273 = 1201K)
From the formula,
103/298 = P₂/1201
P₂ = [tex]\frac{103 * 1201}{298}[/tex]
P₂ = 415.11 kPa
415.11 kPa is the pressure of the gas when it temperature reaches 928°C.
Can you please answer number 8 thanks
Which is most likely to dissolve fastest in water? A. sugar cube B. powdered sugar
The powered sugar will easily dissolve in water than the sugar cube. Because, as the surface area of the substance increases, the more they can interact with water and dissolve easily.
What is solubility ?Solubility of a substance is the fraction of its concentration that can be dissolved in a particular solvent at a specified temperature. Solubility of a substance depends on the bond type, molecular mass, temperature, pressure etc.
As the surface area of the solute increases, its solubility in a solvent also increases. Its because, as the surface area increases, the substance is more exposed to the solvent.
The powdered sugar have the higher surface area and it easily interact with water , which can be fastly dissolved in water than a sugar cube do. The inner part of the cube is not get wet and it takes time to dissolve.
Find more on solubility;
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