Answer:
The vegetative parts includes the roots, stems,leaves and the reproductive parts include flowers. ... The vegetative parts can reproduce new plants by the process of vegetative propagation but the reproductive parts cannot produce new plants directly instead they produce precursor of new plants that are seeds or fruits.
Which of these correctly describes the layer of Earth that has the highest temperatures?
The crust is the hottest because it is closest to the Sun.
The mantle is the hottest because it is the thickest layer.
The outer core is the hottest because it is composed of liquid rock.
The inner core is the hottest because it is under the most pressure.
Please English
Thank you:)
Answer:
The inner core is the hottest because it is under the most pressure.
Explanation:
brainliest please. . .
Who created the planetary model of the atom?
Question 1 options:
Democritus
Dalton
Rutherford
Bohr
How to create a good statement of the problem?
Americans drink 5,604,000 gallons of sweet tea each day. How many liters is
that? (1 gal = 3.79 L)
5604000gallon =21239160 liters
The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. All modern fertilizers use PO43- as a source of phosphorus. Use your knowledge of the old methods to determine the moles of phosphorus found in 10.0 grams of (15-35-15)?
The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. Using the knowledge of the old methods, the number of moles of phosphorus found in 10.0 grams of phosphorus is 0.05 mole.
The (15-35-15) number on the bag of fertilizer is used for:
Nitrogen 15 : Phosphorus pentoxide 35: potassium oxide 15Thus, in a 100-gram bag of fertilizer, there are 35 grams of phosphorus pentoxide P₂O₅.
∴
To determine the number of moles of 10 grams of phosphorus pentoxide in (15-35-15) bag of fertilizer, we have:
[tex]\mathbf{=10 \times \dfrac{35}{100} \ grams \ of \ P_2O_5}[/tex]
= 3.5 grams of P₂O₅
Recall that:
[tex]\mathbf{Number of moles = \dfrac{mass}{molar \ mass}}[/tex]
the molar mass of P₂O₅ = 142 g/mol∴
[tex]\mathbf{Number of moles = \dfrac{3.5\ g}{ 142 \ g/mol}}[/tex]
[tex]\mathbf{Number of moles = 0.0246 \ mol}[/tex]
Provided that 1 mole of P₂O₅ harbors 2 moles of phosphorus;
Then;
The number of phosphorus present in 10.0 grams of (15-35-15) fertilizer is:
= 0.0246 moles × 2
= 0.0492 moles
≅ 0.05 moles
Therefore, we can conclude that the number of moles of phosphorus found in 10.0 grams of (15-35-15) bag of fertilizer is 0.05 moles.
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Using value of 1.1×10−10 for the Ksp, calculate how many milligrams of Ag2CrO4 will dissolve in 11.5 mL of H2O
Answer:
i think it might be 3.8 milligrams but to be honest i dont know im just trying to help
Explanation:
Using value of 1.1×10−10 for the Ksp, 1.0 milligrams of Ag₂CrO₄ will dissolve in 11.5 mL of H₂O.
What is mass?Mass is defined as the quantity of material that makes up a thing, whereas weight is the force that an object produces. A particle's or an object's mass is a dimensionless number that indicates how much matter is present. Gravity and inertia, which are the two main forces influencing how objects move in space, make mass crucial.
Ag2CrO4 dissociates to form Ag2CrO4 (s). aq 2Ag+ + crO4 (aq)
Ksp = [2Ag+] is an expression for the solubility product constant.
[Ag+] = 2x & [CrO4-] = x 1.1 10 10 = 2[CrO4-] (2x)
2(x) = 4x3 / x = [(1.1×10−10)/4]
1/3 = 3.02 x 10-4 M
Determine the number of CrO4- moles dissolved in 10 ml of water.
Molarity of CrO4- is equal to the number of moles of CrO4- divided by the volume in liters (3.02 x 10-4 M) (10 x 10-3 L)
Number of CrO4- moles equals (3.02 x 10-4)(10 x 10-3) = 3.02 x 10-6 mole.
Number of CrO4- = Number of Ag2CrO4 moles
= 3.02 x 10-6 mole
Ag2CrO4's molar mass = 331.73 g/mole.
3.02 x 10-6 mole of dissolved Ag2CrO4 in water
= 0.0010 g,
= 1.0 milligram.
Thus, using value of 1.1×10−10 for the Ksp, 1.0 milligrams of Ag₂CrO₄ will dissolve in 11.5 mL of H₂O.
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What is the molar concentration of a solution prepared by dissolving 8.63 g of Ba(NO3)2 (molar mass = 261.35 g/mol) to a total volume of 250.0 mL?
What is the molar concentration of a solution prepared by diluting 10.0 mL of the solution in Question #1 to a total volume of 50.00 mL?
The concentration of the solution is 0.132 M, the concentration of the diluted solution is 0.026 M.
Given that;
number of moles = concentration × Volume
Concentration = number of moles/volume
But number of moles = mass/molar mass
mass = 8.63 g
Molar mass = 261.35 g/mol
Hence, number of moles = 8.63 g/261.35 g/mol = 0.033 moles
volume = 250.0 mL or 0.25 L
concentration = 0.033 moles/0.25 L = 0.132 M
For the second part of the question;
Using the dilution formula, C1V1 =C2V2
C1 = initial concentration = 0.132 M
V1 = initial volume = 10.0 mL
C2 = Final concentration = ?
V2 = Final volume = 50.00 mL
C2 = 0.132 M × 10.0 mL/ 50.00 mL
C2 = 0.026 M
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Fill in words that correctly complete this sentence. Anna looks around the skating rink and notices many examples of the movement of thermal energy. For example, she sees her friend holding a cup of hot chocolate in the cold rink. Thermal energy flows from ( ) matter to ( ) matter.
Answer:
hot to cold matter
9. Imagine that one of your kitchen workers tells you that he believes your kitchen has a pest problem and
might be facing an infestation. While you trust this employee, you want to see for yourself. What would you
look for in trying to determine if you have a pest problem or not? Describe the key signs that you would look
for and what you would do if you determined that you were suffering from a pest problem.
Answer:
well there are many ways to prevent a pest infestation ..... as we all know ... insects such as ants love leftovers, so store food in airtight containers like Tupperware or jars with rubber seals on the lids.
Keep a tight lid on your trash can at all times and move the trash to an outside dumpster as soon as possible.
Clean your counter tops, tables, and floors on a regular basis to prevent crumbs or food buildup
Explanation:
Hope this helps:)
Part A
Enter an equation for the precipitation reaction that occurs (if any) when solutions of ammonium chloride and calcium nitrate are mixed.
Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if no precipitate is formed.
ΑΣΦ
?
2NH, Cl(aq) + Ca(NO3)2 (aq) +CaCl, (s) + 2N, O(g) + 4H, O(g)
DA chemical reaction does not occur for this question
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The equation of reacting ammonium chloride with calcium nitrate will be: [tex]Ca(NO3)_2(s) + 2NH_4CI(s) --- > 2N_2O(g) + CaCl_2(s) + 4H_2O(g)[/tex]
What are chemical reactions?They are reactions involving chemical reactants.
Ammonium chloride, in solid form, will react with calcium nitrate, also in solid form to produce dinitrogen oxide gas, solid calcium chloride, and water vapor.
The equation of the reaction is represented as follows:
[tex]Ca(NO3)_2(s) + 2NH_4CI(s) --- > 2N_2O(g) + CaCl_2(s) + 4H_2O(g)[/tex]
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Draw a Lewis structure for the following molecules on scratch paper. Then give the number of bonds between the C and N in each.
CH5N
CH3N
HCN
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What does Newton's first law of motion state?
Every action has an equal and opposite reaction.
A body at rest will stay at rest until it is acted upon by another object.
The amount of force acting on an object is equal to its mass times its acceleration.
All objects that have mass attract each other with a force that depends on their mass.
Answer:
B. A body at rest will stay at rest until it is acted upon by another object
Explanation:
Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
TRUE OR FALSE:The basic atom has a neutral charge.
true because I already foresighted a whole lot of things that I was not able to
Answer:
True
Explanation:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.
;D
What is the weakness of particle theory?
Answer:
The particle model does not take into account: the size and shape of particles. the space between particles.
The weakness of particle theory are:
matter is very small in size which are continuously moving. most of the particle are not spherical.particles are not solid because atoms are having empty space.What is particle theory?it is a part of kinetic theory which states that all matter consists of very small particles which are constantly moving or in a continual state of motion.
Therefore, lack of space between particles and size of particles are the limitations of particle theory.
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PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . NUMBER 6
Answer:
3 mass instincts. If you look at the scale you can they evenly sometimes line up with a line. Whenever a huge instinct occurred the lines were really high, but whenever they were little instincts on the scale the lines would go down
Explanation:
What is the goal of the metric system
Answer:
One goal of the metric system is to have a single unit for any physical quantity; a second important goal is to minimize the use of conversion factors when making calculations with physical quantities.
Explanation:
Hope this helps.
A spoonful of table salt dissolve in a bowl of soup is what change?
Answer:
Dissolving a solid in liquid, such as table salt in water, is a physical change because only the state of the matter has changed.
Explanation:
When a spoonful of table salt (sodium chloride, NaCl) dissolves in a bowl of soup, a physical change occurs because, the chemical composition of the salt (sodium chloride) remains the same; it's just dispersed in the liquid. This change is known as dissolution or dissolving.
Here's what happens;
Physical Mixing: When you add the salt to the soup, the salt crystals mix with the liquid soup. The salt particles spread out and become evenly distributed throughout the soup.
Solute and Solvent: In this process, the salt is the solute, and the soup is the solvent. The solute is the substance being dissolved (salt), and the solvent is the substance that does the dissolving (soup).
Ion Formation: As the salt crystals dissolve, the sodium (Na+) and chloride (Cl-) ions that make up the salt separate from each other. The water molecules in the soup surround and interact with these ions, helping to pull them apart from the crystal structure.
Ionic Interaction: The charged ions from the salt interact with the polar molecules in the soup, particularly the water molecules. This interaction forms a solution, where the salt ions are evenly dispersed throughout the liquid.
Homogeneity: The resulting mixture appears uniform and homogeneous. You can't easily distinguish the salt from the soup, and the taste of the soup becomes salty due to the presence of dissolved salt ions.
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A car moves on the road and a rock falls off a cliff.
Which statement is correct?
Both car and rock have kinetic energy.
Both car and rock have only potential energy.
The car has only kinetic energy and the rock has only potential energy.
The car has zero potential energy and the rock has zero kinetic energy.
Answer:
3rd choice
Explanation:
Answer:
they both have kinetic energy
Explanation:
because they are both in motion
In which of Earth's layers are the convection currents?
crust
mantle
inner core
lithosphere
which of the following terms completes the sentence below? to fill out a sign chart, you will need to use test numbers before and after each of the functions zeros and ___? A asympototes B expressions C proportions D values
How are Fahrenheit temperatures converted to Celsius temperatures?
subtract 273 from the original number
multiply the number by 95 and then add 32
subtract 32 and then multiply that number by 59
add 273 to the original number
Answer:
subtract 32 and then multiply that number by 5/9
Explanation:
i took the test on k12
Answer:
multiply the number by 95 and then add 32
Explanation:
i took the test
A 300 milliliter container that is filled with 100 milliliters of oxygen and 200 mL of hydrogen has a total pressure of 750 milliliters of mercury. What is the partial pressure of the oxygen
Which statement is true concerning visible light and the electromagnetic spectrum?
A.
Visible light is a large portion of the electromagnetic spectrum.
B.
Visible light is a small portion of the electromagnetic spectrum.
C.
All electromagnetic radiation is considered to be visible.
Answer:
The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.
The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from Hz to Hz are:
gamma rays
X-rays
ultraviolet radiation
visible light
infrared radiation
radio waves.
The visible light is the very small part of the electromagnetic spectrum that ranges from the to, Visible light is the light that the human eye can see.
Thus, the correct answer is- option d.
Learn more about visible light:
Explanation:
i did this
Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 10 neutrons. Click on the “Templates” button template button and make use of the "stacked super/subscript" button button for entering stackes super/subscripts for entering the mass number and atomic number of the isotope.
Answer:
8 electróns
Explanation:
because the Last protons
What happens if an atom has a different amount of electrons than protons? (Select all that apply) A: The particle is no longer an atom. B: The particle becomes a different element. C: The particle has a charge. D: The particle is considered an ion.
What will happen in a case there is different number of electrons compare to protons is D: The particle is considered an ion.
An ion can be regarded as atom or molecule which posses some amount of electron more than amount of protons and vice versa. It can be regarded as molecules that has a charge. i.e ( -ve or +ve)When the number of electron in this molecules or atom is more that that of the present protons, then the ion is negatively charged ion.When a particles posses less electron compare to the present protons then the ion is positively charged.
Therefore, an ion can be charged positively and it can be charged negatively
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A basketball weighing 0.5 kg is flying through the air at 10
m/s. What is its kinetic energy?
Enter the answer
Check it
Improve this questio
Answer:
25J
Explanation:
Kinetic energy = (mv^2)/2. So (.5)(10^2)/2 = 25 J
Explain why you would want to keep some, but not all, receipts as part of your financial records.
Answer:
Explanation:
Let's try and figure out the ones you don't keep.
Receipts from the dollar tree. You can't return what you bought and you only paid a dollar. It's not worth it.
Food receipts. You can't return it and unless you want to itemize what you spend / month and on what, they don't serve any purpose.
Now figure out which ones you would want to keep
1. Anything pertaining to medical perscriptions. I don't know how it works in the United States, but in Canada we are allowed to deduct only medications with a DIN number.
2 Anything that you would use for travelling that is not for pleasure (ie it is a business expense). So if you are a salesman and your territory is from A to B you would deduct meals, mileages, motels if you must stay away from home
3 In the states some tax receipts are deductible, so you might want to save those.
What particles would you find in a nucleus of an atom
Answer:
The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus.
Planets, asteroids, and comets orbit the Sun in our solar system because the Sun is the__________
Strongest magnetic field in the solar system
Most massive object in the solar system
Answer:
strongest magenetic field in the solar system
Explanation:
Write the chemical formula for the ionic compound formed by lithium and fluorine.
Answer:
→ LiF
Explanation:
[tex]{ \rm{2Li _{(s)} + F _{2(g)} \dashrightarrow \: 2LiF _{(s)} }}[/tex]
Answer:
[tex]Lithium⟼Li+Fluorine⟼F=LiF[/tex]