Ans: C
Temperature can be expressed in terms of :
Kelvin (K), Celsius (C) or Fahrenheit (F)
The three units are interchangeable.
1) Kelvin(K) and Celsius(C)
K = 273 + C ----(1)
2) Celsius(C) and Fahrenheit(F)
F = (C*9/5) + 32 ---(2)
Option C is correct because:
From eq(1), when C = 100
K = 273 + 100 = 373
From eq(2), when C = 100
F = (100*9/5)+32 = 212
In addition to resembling One another, what other criteria of organisms to be grouped in the same species
Answer:
The answer is they reproduce with only one another.
Explanation:
In biology, species is a term that can be defined as a group of organisms that can reproduce with one another and give birth to fertile offspring. In other words, the organisms in one species cannot reproduce with organisms in another species. So, to be considered as part of the species, this criteria is very important.
1. TNT, (C7H5N3O6) reacts explosively with oxygen gas (O2) to produce CO2 gas, water vapor, and N2 gas. If James weighs out 0.853 g of TNT, answer the following question: How many mg of O2 will react with the TNT?
Answer:
631.3 milligrams of oxygen gas will react with the TNT.
Explanation:
[tex]4C_7H_5N_3O_6+21O_2\rightarrow 28CO_2+10H_2O+6N_2[/tex]
Moles of TNT = [tex]\frac{0.853 g}{227 g/mol}=0.003758 mol[/tex]
According to reaction , 4 moles of tNT react with 21 moles of oxygen gas.
Then 0.003758 moles of TNT will react with:
[tex]\frac{21}{4}\times 0.003758 mol=0.01973 mol[/tex]
Mass of 0.01973 moles of oxygen ;
[tex]0.01973 mol\times 32 g/mol=0.6313 g=631.3 mg[/tex]
( 1 g = 1000 mg)
631.3 milligrams of oxygen gas will react with the TNT.
how many moles are in 1.5 x 10^20 molecules of NH3?
.249 moles are in 1.5 x 10^20 molecules of [tex]NH_3[/tex].
What is a mole?A mole is a very important unit of measurement that chemists use. A mole of something means you have 602,214,076,000,000,000,000,000 of that thing, like how having a dozen eggs means you have twelve eggs.
To solve this equation, you will use Avogadro's constant (6.02 x 10^23) to convert the number of molecules to moles. we need to divide the molecules given by this constant:
[tex]\frac{1.50 X 10^2^3}{6.02 X 10^2^3}[/tex] = .249
So, the answer is .249 moles.
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Heat energy can be produced in many ways. Which of the following sources can produce heat energy? A. the Sun B. electricity C. burning wood D. all of these
The answer is D. all of these
Kim described two subatomic particles below:
Particle P: Has the least mass
Particle Q: A more massive particle with a charge
Which of the following statements is correct based on the descriptions of each particle?
Particle P repels Particle Q.
Particle P attracts Particle Q.
Particle P is a neutron and Particle Q is a proton.
Particle P is a proton and Particle Q is an electron.
Answer:
#2
Explanation:
REDOX WS1
Identify the species being oxidized and reduced in each of the following reactions
a. Cr+1 + Sn+4 Cr+3 + Sn+2
b. 3Hg+2 + 2Fe 3Hg + 2Fe+3
c. 2As + 3Cl2 AsCl3
d. NaBr + Cl2 NaCl + Br2
e. Fe2O3 + 3CO 2Fe + 3CO2
Which of the following threats to biodiversity is a result of over-fishing?
Global Climate Change
Habitat Loss
Human Impact
Invasive Species
Over-fishing is a threat to biodiversity resulting from human impact, specifically through unsustainable resource exploitation. Thus option C) 'Human Impact' is correct.
The correct answer to the question is Human Impact.
Over-fishing is a form of overexploitation, which is one of the main threats to biodiversity resulting from human activity. Over-fishing depletes fish populations faster than they can reproduce, leading to a reduction in biodiversity and the disruption of marine ecosystems.While global climate change and habitat loss are significant threats to biodiversity, they are typically not the direct result of over-fishing. Instead, over-fishing directly exemplifies how human impact on the environment can lead to unsustainable resource use and endanger species.
Complete question: Which of the following threats to biodiversity is a result of over-fishing?
A)Global Climate Change
B)Habitat Loss
C)Human Impact
D)Invasive Species
Correct option: C) Human impact
Describe the acceleration of your bicycle as you ride it from your home to the stoe
The acceleration of your bicycle can vary depending on the situation. If you are riding at a constant speed, your acceleration would be zero. However, if you are starting from rest or changing your speed, you would have a non-zero acceleration.
Explanation:The acceleration of your bicycle as you ride it from your home to the store can vary depending on the situation. If you are riding at a constant speed, your acceleration would be zero because acceleration is the rate of change of velocity, and constant speed means there is no change in velocity. However, if you are starting from rest and gradually speeding up or slowing down, then you would have a non-zero acceleration.
For example, if you start from rest at your home and gradually increase your speed as you ride to the store, your acceleration would be positive. On the other hand, if you start at a high speed and gradually slow down as you approach the store, your acceleration would be negative.
It's important to note that acceleration is a vector quantity, meaning it has both magnitude and direction. So, depending on the direction of your motion, the acceleration could be positive or negative.
which of the following equations does not demonstrate the law of conservation of mass
The equation P4 + SO2 → 2P4O10 does not demonstrate the law of conservation of mass.
What is law of conservation of mass?According to law of conservation of matter, "the mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another."The law of conservation of matter is a general law in chemistry applicable for any system closed to all transfers of matter and energy.According to this law, the mass of a substance or an object never changes over time, no matter how the constituent parts rearrange themselves. To put it in simple words, the mass can neither be created nor be destroyed.In equation P4 + SO2 → 2P4O10, the mass of the reactants are not equal to the mass of the products. Therefore, this equation does not obey the law of conservation of mass.
Hence, we can conclude that option C is the answer.
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THE BOAT WAS MOORED ON THE BANK WHICH SENTENCE USES THE WORD BANK IN THE SAME CONTEXT AS THE EXAMPLE SENTENCE A a row of cypress trees lined the bank B i deposited my check in the bank C the information was stored in the computer memory bank D the biplane had to bank right
A row of cypress trees lined the bank uses the word bank in the same context as the example sentence. Therefore, the correct option is option A.
What is reference to context?
Context in writing is information that aids readers in correctly interpreting a text's meaning. Context can take many different forms, such as background information or specifics of the events, setting, or period of time in which a work is set. Context is characterised by its ability to make a written work's meaning more clear.
The circumstances whereby a specific piece of writing is produced are referred to as the rhetorical context. It takes into account things like the author's background, the situation or purpose for the writing, as well as the intended readership. A literary work is made richer by context, which also aids in drawing readers fully into the narrative. For both writers and readers, context is crucial. A row of cypress trees lined the bank uses the word bank in the same context as the example sentence.
Therefore, the correct option is option A.
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According to the question the correct answer is: A. a row of cypress trees lined the bank.
The sentence that uses "bank" in the same context as the example is: 'a row of cypress trees lined the bank'. Here, 'bank' refers to the land beside a river or body of water.
In this context, the word "bank" refers to the land alongside a river or body of water, similar to the example sentence where the boat was moored on the bank (the edge of a river).
What kind of energy is required for photosynthesis to occur?
A. Solar energy
B. Energy from nutrients in the ground
C. Energy stored in chemical bonds
D. Thermal energy
A, Solar energy
Hope it helps :)
What most likely happens when water loses heat?
A chemist wants to make 5.5 L of a 0.250 M CaCl2 solution, find the mass
What type of star has an absolute brightness of 1 and a surface temperature around 7,500 ∞C
Supergiant
Giant
Main sequence
Dwarf
Answer:
It's supergiant.
Explanation:
I took the test.
Which term names the underground region between where water saturates pores and where it does not? A. water zone B. water table C. aqua zone D. porous zone
Water table is the underground region between where water saturates pores and where it does not.
Answer: B
Explanation
It is known that water is present below the ground. The rocky terrain inside the ground contains water and the water will be filled in the pores between the rocks.
The water filled in the saturated region below the ground is separated from the unsaturated region which is the region above the ground by a surface termed as water table.
The unsaturated region is the soil above the ground and the plants get water from this region.
The water is present in unsaturated region occupy between the pores of rocks and soils but they are loosely filled so that plants can extract water from them.
Then below the ground water table region will be present and below the water table the saturated water region is present.
So water table is the region dividing the saturated and unsaturated water pore regions.
What pressure will be exerted by 0.650 mol of a gas at 30.0°C if it is contained in a 0.700L vessel? A) 2340kPa B) 2340atm C) 231kPa D) 231atm
Describe three signs that a chemical reaction has taken place and give an example of each sign
Change in state, change in color, and change in odor are three signs that a chemical reaction has taken place.
What is a chemical reaction?A chemical reaction is a process in which the atoms or molecules of one or more substances (known as reactants) are rearranged to form one or more different substances (known as products).
During a chemical reaction, chemical bonds between atoms are broken and new bonds are formed between different atoms. It results in the creation of new chemical compounds with unique properties.
Chemical reactions can be represented by chemical equations that show the reactants and products involved in the reaction. These reactions can be exothermic (releasing energy) or endothermic (requiring energy). They play a crucial role in various natural and industrial processes.
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What role do triglycerides serve in the human body?
A. Long term storage of energy
B. Enzymes that catalyze reactions
C. Protective coating for outer tissues
D. Information storage
Answer: Long term storage of energy
Explanation: Triglycerides are the fats or basically lipids which are found in the blood.
They are the source of the long term storage of energy.
They are primarily used as storage of the energy because the its oxidation will produce twice as much energy than the oxidation of the carbohydrates.
Thus it is better to store the energy which we take from the food to store as triglyceride.
When part of earths surface is tilted towards the sun what does it cause
Finish & balance the equation for the dissolution of sodium carbonate in water. This is a neutralization. 2HCl + Ca(OH)2 ---->
Explain the difference between commensalism,parasitism,and mutualism and give examples of each
Answer:
In commensalism one of the organisms benefits while the other receives no benefit but is unharmed. In mutualism, both organisms benefit.
Explanation:
The exact answer on Edg
the circulatory system in animals is similar to
(1) photosynthesis in plants
(2) vascular transport in plants
(3) transpiration in plants
(4) digestion is plants
A balloon with a volume of 0.851 L holds 0.783 mol He gas at a temperature of 150.0 K. The temperature then increases to 305 K, and the pressure is changed to 0.800 atm. The original pressure of the gas was ______ atm. The final volume of the balloon is _____ L.
Answer:
Original pressure = P1 = 11.3 atm
Final volume = V2 = 24.5 L
Explanation:
Given data:
Initial conditions:
Volume V1 = 0.851 L
Temperature T1 = 150.0 K
Moles of He n1 = 0.783
From ideal gas equation:
[tex]PV = nRT\\\\P = \frac{nRT}{V}[/tex]
Substituting the initial V, T and n using R = 0.0821 L.atm/mol-K we get:
[tex]P1 = \frac{0.783*0.0821*150.0}{0.851} = 11.33 atm[/tex]
Final conditions:
T2 = 305 K
P2 = 0.800 atm
Since the number of moles of He will remain constant we can write:
[tex]\frac{P1V1}{T1} = \frac{P2V2}{T2} \\\\V2 = \frac{P1*V1*T2}{T1*P2} = \frac{11.33*0.851*305}{150*0.800} =24.50 L[/tex]
**CHEMISTRY!! PLEASE HELP ASAP!!**
How many atoms of each element does calcium sulfate, CaSO4, contain?
Calcium = 1 atom, Sulfur = 4 atoms, Oxygen = 4 atoms
Calcium = 1 atom, Sulfur = 1 atom, Oxygen = 4 atoms
Calcium = 4 atoms, Sulfur = 4 atoms, Oxygen = 4 atoms
Calcium = 4 atoms, Sulfur = 1 atoms, Oxygen = 4 atoms
To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option B.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. In the given compound, Calcium = 1 atom, Sulfur = 1 atom, Oxygen = 4 atoms.
Therefore, the correct option is option B among all options.
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Which statements correctly define factors that contributed to the decline of the Roman Empire? Choose all answers that are correct. A. Rome could not grow enough food and maintain a large enough army to fend off barbarian tribes. B. Incompetent rulers placed huge tax burdens on the Roman citizens. C. A long period of peace throughout the empire led to a sense of overconfidence in Rome. D. The empire split into three separate units, each ruled by a consul.
Answer:
a and B I got an 100% and I'm getting a 99.7 in history k12
Explanation:
SOMEONE PLEASE HELP ME!!!
Explain, in terms of molecular structure or distribution of charge, why a molecule of methane, CH4 is nonpolar
Final answer:
A methane (CH4) molecule is nonpolar due to its symmetrical tetrahedral structure and equal sharing of electrons in non-polar covalent bonds, resulting in a balanced distribution of charge.
Explanation:
The molecule of methane, CH4, is nonpolar because its molecular structure is tetrahedral, with each of the four hydrogen atoms symmetrically arranged around the central carbon atom. This symmetrical arrangement allows the electrons to be shared equally among the C-H bonds, resulting in a molecule with no net dipole moment. The carbon and hydrogen atoms also have similar electronegativities, leading to non-polar covalent bonds. Thus, overall, the distribution of charge throughout the molecule is even, making methane nonpolar.
Furthermore, the tetrahedral geometry of methane ensures spatial symmetry, preventing any concentration of charge in a particular direction. This molecular symmetry, combined with the homogeneity of carbon-hydrogen bonds, results in a nonpolar molecule, underscoring the significance of both structural and electronegativity factors in determining the overall polarity of compounds. This molecular characteristic is vital in understanding methane's behavior in various chemical and physical interactions.
Identify what life celular process produces the waste products carbon dioxide and water?
Calculate the mass of aluminum in 500 g of Al(C2H3O2)3
The required mass of aluminum in 500g of [tex]Al(C_2H_3O_2)_3[/tex] is approximately 66.15 g.
To calculate the mass of aluminum in 500 g of [tex]Al(C_2H_3O_2)_3[/tex] (aluminum acetate), we need to follow these steps:
1. Molar Mass Calculation: Determine the molar mass of [tex]Al(C_2H_3O_2)_3[/tex] simply summing the atomic masses of each atom that makes up the molecule. The formula for aluminum acetate is [tex]Al(C_2H_3O_2)_3[/tex], which consists of 1 aluminum (Al), 6 carbon (C), 9 hydrogen (H), and 6 oxygen (O) atoms.
2. Atomic Masses from Periodic Table: Al = 26.98 g/mol, C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol
3. Molar Mass of [tex]Al(C_2H_3O_2)_3[/tex]:
[tex]1 Al: 1 \times 26.98\left g/mol = 26.98\left g/mol[/tex][tex]6 C: 6 \times 12.01\left g/mol = 72.06\left g/mol[/tex][tex]9 H: 9 \times 1.01\left g/mol = 9.09\left g/mol[/tex][tex]6 O: 6 \times 16.00\left g/mol = 96.00\left g/mol[/tex]Total molar mass = 204.13 g/mol
4. Determine Moles of [tex]Al(C_2H_3O_2)_3[/tex]:
Using the formula Moles = Mass / Molar Mass. For 500 g of [tex]Al(C_2H_3O_2)_3[/tex]: Moles = [tex](500\left g) /\left (204.13\left g/mol) \approx 2.45\left mol[/tex]5. Calculate Mass of Aluminum: Using the molar mass of aluminum (27.0 g/mol) and the calculated moles of [tex]Al(C_2H_3O_2)_3[/tex]:
Each mole of [tex]Al(C_2H_3O_2)_3[/tex] contains 1 mole of Al
Mass of Al = [tex]2.45\left mol \times 27.0\left g/mol = 66.15\left g[/tex]
The mass of aluminum in 500 g of [tex]Al(C_2H_3O_2)_3[/tex] is approximately 66.15 g.
Consider the balanced equation below.
3Fe+4H2O--->Fe3O4+4H2
What is the mole ratio of Fe3O4 to Fe?
A. 1:3
B. 1:4
C. 3:1
D. 4:3
C6h12(l)+9O2(g)->6CO2(g)+6h2O(g)
Yes, the reaction is balanced as shown
Since the same number of each type of atom occurs on both sides of the arrow, the reaction in the above chemical equation is balanced. Ensuring that the total mass of reactants and products is equal, the law of conservation of mass is respected.
One molecule of [tex]C_6H_{12[/tex] and nine molecules of oxygen (O₂) can be converted into six molecules of carbon dioxide (CO₂) and six molecules of water (H₂O) by varying the coefficients, resulting in a balanced chemical equation.
Missing parts;
Is the reaction; [tex]C_6H_{12}(l)+9O_2(g)- > 6CO_2(g)+6H_2O(g)[/tex] balanced