Answer:
68,400
Explanation:
Which category is our Sun located?
Question 2 options:
White Dwarfs
Supergiants
Giants
Main Sequence
Answer:
main sequence is the correct answer of your question
The sun is located in the main sequence in the solar system of the universe. Option D is correct.
What is a solar system?The solar system is a gravitational bound system that consists of some planets like the moon, earth, Neptune, venus, mars, mercury, Saturn, and Uranus these revolve around on the orbit of space.
The sun is the center of all the planets that is all planets revolve around the sun only as it is the biggest star for all the planets and the majority of the mass of the planet is the sun only.
Therefore, Option D is the correct sun located in the main sequence in the solar system of the universe.
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What is the percent yield of LiCl if I produced 30.85g LiCl and my theoretical yield was calculated to be 35.40g LiCl?
Answer:
87.15%
Explanation:
To find percent yield, we can use this simple equation
[tex]\frac{Actual}{Theoretical} *100[/tex]
Where "Actual" is the amount in grams actually collected from the reaction, and "Theoretical" is, well, the theoretical amount that should have been produced.
They give us these values, so to find the percent yield, just plug the numbers in.
[tex]\frac{30.85}{35.40} *100\\\\ =87.15[/tex]
So, the percent yield is 87.15%
An easy trick to remember how to do this is just to divide the smaller number by the bigger number and move the decimal back two places. If you have a percent yield greater than 100%, something is wrong in the reaction.
What will happen if you heat aliquid to high temperatures?
Answer:
An increase in the temperature of a liquid causes an increase in the average speed of its molecules. As the temperature of a liquid increases, the molecules move faster thereby increasing the liquid's kinetic energy.
Ecosystems are self-sustaining. They naturally recycle resources without human intervention. Do you think this is true for a pop- bottle biome?
Answer:
yes. For a pop bottle biome to be self sustaining it needs a water cycle, mineral cycle, solar energy flow, and a balance.
Explanation:
hope this helps
Answer:
I would say no because you have to add water and other recourses for it to grow and work
Explanation:
What part of the food. chain is a pine?
a:primary consumer
b:secondary consumer
c:herbivore
d:producer
Answer:
producer
Explanation:
the exact position of the electrons of an atom cannot be determined because they are in constant ___
A gas has a volume of 590 mL at a temperature of –55.0°C. What The temperature be if the volume expands to 15L at constant pressure?
Answer:
5542.37 K
Explanation:
Given that,
Initial volume, V₁ = 590 mL
Initial temperature, T₁ = -55°C = -55 + 273 = 218 K
Final volume, V₂ = 15 L
We need to find the final temperature of the gas. The relation between the volume and the temperature is given by :
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Where
T₂ is final volume of the gas
Put all the values in above relation,
[tex]T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{15\ L\times 218\ K}{590\times 10^{-3}\ L}\\\\T_2=5542.37\ K[/tex]
So, the required temperature is equal to 5542.37 K.
15 points will mark brainliest
Photosynthesis in a plant is an example of which characteristic of living things?
1. Reproduction
2. Response to the environment
3. Growth and development
4. Ability to obtain and use energy
Answer:
4. Ability to obtain and use energyHow many moles of Ag can be obtained from 2.77 moles Cu using the following
balanced reaction?
2AgNO3
+ Cu
Cu(NO3)2
+ 2Ag
Answer:
2.77×2= 5.4 mol Ag can be obtained
Choose the larger atom from each of the following pairs.
a. Between Se and Te, the larger atom is __________
b. Between I and Kr, the larger atom is ________
c. Between P and Pb, the larger atom is _______
d. Between Ge and Br, the larger atom is___________
e. Between G e and B r, the larger atom is _________
1. Se
2. Kr
3. S
4. C
Answer:
C, between P and Pb, largest atom is Pb
The larger atom from each of the following pairs is as,
a. Between Se and Te, the larger atom is Te .
b. Between I and Kr, the larger atom is I .
c. Between P and Pb, the larger atom is Pb .
d. Between Ge and Br, the larger atom is Ge .
e. Between G e and B r, the larger atom is Ge .
How atomic size of elements vary in periodic table?In periodic table, on moving from top to bottom in a group the atomic size of elements increases while on moving left to right in a period the atomic size of elements decreases.
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If you are given 64.0 grams of CH4, how many grams of H2O are made
Answer:
144 g of H₂O.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CH₄ + 2O₂ —> CO₂ + 2H₂O
Next, we shall determine the mass of CH₄ that reacted and the mass of H₂O produced from the balanced equation. This can be obtained as follow:
Molar mass of CH₄ = 12 + (4×1)
= 12 + 4 = 16 g/mol
Mass of CH₄ from the balanced equation = 1 × 16 = 16 g
Molar mass of H₂O = (2×1) + 16
= 2 + 16 = 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Finally, we shall determine the mass of H₂O produced by the reaction of 64 g of CH₄. This can be obtained as follow:
From the balanced equation above,
16 g of CH₄ reacted to produce 36 g of H₂O.
Therefore, 64 g of CH₄ will react to produce = (64 × 36)/16 = 144 g of H₂O.
Thus, 144 g of H₂O were obtained from the reaction.
Help please
Lunar eclipses happen when the _____.
moon passes between the Earth and the sun
Earth passes between the sun and the moon
sun passes between the Earth and the moon
Answer:
mook passes between the earth and sun
Determine the number of atoms in 3.14 g gold
Helpppp me pleaseeee now I’ve been struggling so bad w this
Answer:
I don't know what the passage says, but I feel like the most logical conclusion is D or the last one.
Explanation:
Answer:
D! Hope this helps! Figured id help with all of ur questions!
Explanation:
Im a wiz at science! ;)
Conduct an experiment to determine the specific heat, c, for unknown metal #1 (under solids tab). Use the formula: c = (q)/(m)(T) where q = heat the metal lost; m = mass of the metal; and T = the change in temperature of the metal (metal and water end at same temperature value). (Note: An assumption in this type of calorimetry problem is that in an ideal system the heat the metal lost = heat the water gained.) Use a set up like you did in the experiment in #2 above to determine how much heat, q, the WATER GAINED and use this value for “q” of the metal, that is, the heat the METAL LOST. Be sure to briefly describe your experiment, record all measurements made, and to show all calculations for determining the specific heat of the metal.
Answer:
The sand and water end up at the same temperature. The sand consists of material that all has the same specific heat. The relations between temperature change and heat lost by the water and gained by the sand can be written separately as: (1) where and are the specific heats of water and sand, respectively. By assumption, the heat gained
Explanation:
What is the relationship between radius and diameter
Answer:
the radius is half the diameter
The radius of a circle is equal to half the diameter.
plz someone help me i dont get this and i need to finish this
Answer:
The height of A is 900
Explanation: Beside A, there is a number which explains what the height is so the answer is A.
A word which describes a solution which is more dilute than cytoplasm and would cause a cell to swell with water
Answer:
A hypertonic solution has increased solute, and a net movement of water outside causing the cell to shrink. A hypotonic solution has decreased solute concentration, and a net movement of water inside the cell, causing swelling or breakage.
Explanation: hope this helps :) sorry if it's wrong :(
Hydrazine (N2H4) and dinitrogen tetroxide (N2O4) form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. Part A Write a balanced chemical equation for this reaction. Express your answer as a chemical equation. nothing A chemical reaction does not occur for this question. Request Answer Part B What is being oxidized, and what is being reduced
Answer:
2N₂H₄+N₂O₄→3N₂+4H₂O; N₂H₄ gets oxidized, N₂O₄ gets reduced.
Explanation:
Part AThey tell us what substances react to form what products, so we can write an unbalanced chemical equation from those substances.
N₂H₄+N₂O₄→N₂+H₂O
To balance this equation, we need to make it so there is an even amount of each element on both sides of the reaction. We can do this by multiplying the amount of each substance by adding a coefficient in front of it.
2N₂H₄+N₂O₄→3N₂+4H₂O
Part BTo identify what is being oxidized and what is being reduced, look at the oxidation charges of each element.
N₂H₄ gets oxidized, N₂O₄ gets reduced.
what is elimination reaction
Ellie started her reaction between the KMnO4 and malonic acid by first heating the two solutions in the hot water bath. She then removed the test tubes from the water bath and poured the KMnO4 into the 75-mL test tube containing the malonic acid. She mixed the solution, placed it back into the water bath, then started the timer. For the data collected at 75 oC, indicate how the process explained above impacts the reaction time.a. The time recorded in the lab notebook is the true reaction time because the reaction only starts after the timer is started b. The time recorded in the lab notebook is longer than the true reaction time because the reaction starts the moment the two solutions were mixed c. The time recorded in the lab notebook is the true reaction time because the reaction only starts after the mixture is placed back into the hot water bath d. The time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed
Answer:
The time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed
Explanation:
A chemical reaction is "a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction" (Oxford dictionary).
A chemical reaction begins immediately the reactants are mixed together in a reaction vessel because the particles of the reactants immediately begin to collide with each other. There is no lost time before reactions begins!
This implies that, the time recorded in the lab notebook is shorter than the true reaction time because the reaction starts the moment the two solutions were mixed.
Answer:
the first one is B. and E. and the second is A., B., and D. on edge 2023
Explanation:
Hydrogen burns exothermically in oxygen
What is the energy given out during the reaction: 2H2 + O2 -> 2H2O?
Given:
H-H bond: 436 kJ/mol
O=O double bond: 498 kJ/mol
O-H bond: 464 kJ/mol
A. -3226 kJ/mol
B. -884 kJ/mol
C. -486 kJ/mol
D. -442 kJ/mol
Answer:
C. -486 kJ/mol
Explanation:
Enthalpy change equals bonds broken (reactants) minus bonds formed (products)
Bonds broken = 2 H-H bonds + 1 O=O double bond = 2(436) +498 = 1,370 kJ/mol
Bonds formed = 4 O-H bonds = 4(464) = 1,856 kJ/mol
Bonds broken - bonds formed = 1,370 - 1,856 = -486 kJ/mol
What is the molarity of ZnCl, that forms when 20.0 g of zinc completely reacts with CuCl2, according to the following reaction? Assume a final
volume of 285 mL
Zn(s) + CuCl2(aq) → ZnCl2(aq) + Cu(s)
What evidence can be used to explain the type of mutualistic relationship present between the water buffalo and frog?
how many moles are in 83 particles of sodium chloride?
Answer:
there are 1.4201927800478769 moles in 83 particles of sodium chloride. or 1.42 for short.
Explanation:
Arrange the following in order of increasing bond strength of the carbon oxygen bond: Group of answer choices Carbon monoxide < carbon dioxide < carbonate ion Carbonate ion < carbon monoxide < carbon dioxide Carbon dioxide < carbon monoxide < carbonate ion Carbon dioxide < carbonate ion < carbon monoxide carbonate ion < carbon dioxide < carbon monoxide Carbon monoxide < carbonate ion < carbon dioxide Carbonate ion < carbon monoxide < carbon dioxide
Answer:
carbonate ion < carbon dioxide < carbon monoxide
Explanation:
Bond strength depends on the bond order of a bond. The higher the bond order, the greater the bond strength since shorter bonds are stronger than longer bonds.
The carbonate ion has a bond order of 1.33, carbon dioxide has a bond order of 2 while carbon monoxide has a bond order of 3.
Since the compound with the highest C-O bond order has the strongest C-O bond, then carbon monoxide possesses the strongest C-O bond.
Answer: carbonate ion < carbon dioxide < carbon monoxide
Explanation: Carbon dioxide (chemical formula CO2) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature, and as the source of available carbon in the carbon cycle, atmospheric CO2 is the primary carbon source for life on Earth. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. Carbon dioxide is soluble in water and is found in groundwater, lakes, ice caps, and seawater. When carbon dioxide dissolves in water, it forms carbonate and mainly bicarbonate (HCO−3), which causes ocean acidification as atmospheric CO2 levels increase. Bond strength depends on the bond order of a bond. The higher the bond order, the greater the bond strength since shorter bonds are stronger than longer bonds. The carbonate ion has a bond order of 1.33, carbon dioxide has a bond order of 2 while carbon monoxide has a bond order of 3. Since the compound with the highest C-O bond order has the strongest C-O bond, then carbon monoxide possesses the strongest C-O bond. It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.04% by volume (as of May 2022), having risen from pre-industrial levels of 280 ppm. Burning fossil fuels is the primary cause of these increased CO2 concentrations and also the primary cause of climate change.
help me please i beg u
Answer:
none of the above
Explanation:
Please please help me
Answer:
I agree with Omar because it depends on what the charge of the object and magnet is. If the magnet is negative and the object is positive, they will pull together. If the magnet is negative and the object is negative then they will pull apart.
Explanation:
If 8 moles of magnesium chloride react with enough aluminum, how many moles
of aluminum chloride are produced?
If 8 moles of magnesium chloride react with enough aluminum then the amount of aluminum chloride produced is 5.3 mole.
What is aluminum?Aluminum is defined as a chemical substance with the atomic number 13 and the symbol Al. Aluminum has a density that is around one third that of steel, which is lower than that of most common metals. It has a strong affinity for oxygen, and when exposed to air, creates a protective oxide coating on the surface.
3 moles MgCl2and 2 moles Al will produce 3 moles Mg and 2 moles AlCl3.Therefore, if 8.0 moles of MgCl₂ react, the amount of ammonium chloride that may hypothetically be created can be calculated using the mole ratio between MgCl₂ and AlCl₃ .
8.0 mole MgCl₂ x 2 mole AlCl₃ / 3mol MgCl₂
= 5.3 mole AlCl3
Thus, if 8 moles of magnesium chloride react with enough aluminum then the amount of aluminum chloride produced is 5.3 mole.
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