The potential energy of the rocket when it reaches its maximum height is 13.5 J.
What is potential energy?Potential energy is the energy of a body by virtue of its position in the gravitational field.
To calculate the potential energy it will have at the maximum height, we use the formula below
Formula:
P.E = mv²/2............. Equation 1Where:
P.E = Potential energy of the toy rocketm = mass of the toyv = velocity of the toyFrom the question,
Given:
m = 3 kgv = 3 m/sSubstitute these values into equation 1
P.E = (3×3²)/2P.E = 13.5 JHence, The potential energy of the rocket when it reaches its maximum height is 13.5 J.
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I need help with Chemistry: Mole Conversion
It must be answered in complete detail
Answer:
As Per Given Information
Given mass of H₂O₂ ( Hydrogen Peroxide) 4.0 gm
We've been asked to find the number of moles in Hydrogen Peroxide .
First we calculate molecular mass of Hydrogen Peroxide .
Molecular mass of H₂O₂ = 1×2 + 16 × 2
Molecular mass of H₂O₂ = 2 + 32
Molecular mass of H₂O₂ = 34 gm
Now find the number of moles in given hydrogen peroxide .
[tex] \diamond{\boxed{\blue{\bf{Number \: of \: moles \: = \frac{Given \: mass}{Molecular \: mass} }}}} [/tex]
Put the given value we obtain
[tex] \sf \twoheadrightarrow \: Number \: of \: moles \: = \frac{4}{34} \\ \\ \sf \twoheadrightarrow \: Number \: of \: moles \: =0.117[/tex]
So, the number of moles is 0.117 .
Molar mass of Hydrogen peroxide
2(1)+2(16)34g/molNo of moles
Given mass/Molar mass4/340.117molwe can smell because we have nose
yes it's true.
we can smell cause we have nose have smelling sense.
Answer:
Really? I thought we had noses to poke in other people's business
What can change the number of births in a population?
Answer:
An increased population in younger women. Studies show that younger women may have more children.
I can't put too much complex information or brainly will delete this.
I hope this answers your question! Thanks, and have a wonderful day.
In an ecosystem with an increase in population of young women there can be an increase in the number of births.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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What happens when a hydrogen atom acts like a nonmetal in a chemical reaction?
a.It gains an electron
b.It loses an electron.
c.It loses a neutron.
d. It gains a neutron.
Answer:
B
Explanation:
Since hydrogen has only one valence electron, it tends to lose or share with non-metals like chlorine to obtain a stable state.
What mass of iron (III) chloride contains 2.35 x [tex]10^{23}[/tex] chloride ions?
Answer:
I hope it's help you that I knowthe respect given to all kind of labour
give one word answer
please help me fast
Answer:
dignity
Explanation:
it is called the dignity of labour
The substance which is dissolved in a solution is called a:
solute
solvent
precipitant
colloid
Answer:
solute
A solute is a component in a solution that will be dissolved in the solvent.
Hope this helps. Have a wonderful day.
Answer:
solute
Explanation:
When aluminum oxidizes in air, it forms aluminum oxide (Al2O3):
4Al(s)+3O2(g)→2Al2O3(s)
A 102 g sheet of aluminum oxide formed completely in excess oxygen.
How many grams of aluminum were oxidized?
27 g
51 g
54 g
102 g
Answer:
54g
Explanation:
al= 27gmol-1
al 2mol=54g
Answer: 54 g
Explanation:
is my answer right? i have a feeling its not correct
Temperature is usually defined as a measure of the warmth or coldness of an object or substance. Your answer is, correct do not worry.
why can't soild particles move freely
Answer:
Ionic, atomic, and molecular particles (ions, atoms, and molecules) As a result of strong inter-particle forces, the particles are only able to vibrate rather than move freely. This results in solids having a stable, distinct shape as well as a distinct volume. Solids can only be broken or cut by an outside force.
I hope this helps you
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3. A woman has 7.9 * 10-3 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many grams of hemoglobin does she have in her blood?
The woman that has 7.9 * 10-3 mol of hemoglobin in her blood has 509.20 grams of hemoglobin in her blood.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass. That is;
mass = no. of moles × molar mass
According to this question, a woman has 7.9 × 10-³ mol of hemoglobin in her blood. The mass of hemoglobin in her blood is as follows:
mass = 7.9 × 10-³ × 64,456 g/mol
mass = 509.2grams.
Therefore, the woman that has 7.9 * 10-3 mol of hemoglobin in her blood has 509.20 grams of hemoglobin in her blood.
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Write the balanced equation for the dissolution of NH4NO3 in water. If 3.5 mol NH4NO3 are dissolved, how many moles of each type of ion are produced? How many total moles of ions are produced?
Answer:
According to the balanced equation TWO moles ammonium nitrate produces FOUR moles of water. It’s a simple proportion. You get twice as many moles of water as you have ammonium nitrate.
Explanation:
Pepto-Bismol, an antacid and antidiarraheal, contains bismuth subsalicylate, C-H3O.Bi. Some
users of this product can experience a condition known as "black tongue,” which is caused by the reaction of bismuth(III) ions with trace amounts of sulfide ions (S2) in saliva to form a black
precipitate. Write the balanced complete and net ionic equations for this precipitation reaction,
include phase for each substance.
Include both Complete Ionic and Net Ionic.
The net ionic reaction for the precipitation of the product is 2Bi^3+(aq) + 3S^2-(aq) ------>Bi2S3(s)
What is precipitation?Precipitation is a reaction between two aqueous species which yields an insoluble product or a precipitate. The precipitate occurs as a solid mass in the reaction vessel.
Now, the reaction occurs as follows;
2Bi^3+(aq) + 3S^2-(aq) ------>Bi2S3(s)
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How do Earth's plates move?
Don't give a copied answer
Answer:
Plates on Earth's surface shift as a result of strong heat in the Earth's core, which causes molten rock in the mantle layer to move. It flows in a pattern known as a convection cell, which formed as heated material rises, cools, and then sinks. As the cooled material lowers, it heats up and rises again.
Explanation:
Question 22 of 25
What is one difference between using nuclear energy and biomass energy?
A. Nuclear energy does not produce carbon dioxide.
B. Nuclear energy cannot be used to make electricity.
C. Nuclear energy can only be used in sunny areas.
D Nuclear energy does not produce any waste products.
Nuclear and Biomass energy are the type of energies that differs from each other in producing carbon dioxide. Thus, option A is accurate.
What are nuclear and biomass energy?Nuclear energy is nonrenewable energy that concerns nuclear reactions to produce electricity. It includes the nuclear fission of the atoms to release energy.
Biomass energy is a renewable source of energy that utilizes and employs living and nonliving biomaterials to generate energy in the form of fuel and electricity. It also produces carbon dioxide as a by-product.
Therefore, option A. the release of carbon dioxide differs nuclear energy from biomass energy.
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Transverse and longitudinal waves can combine. Describe what kind of wave is formed and how such a wave can modeled in a lab?
Answer:
rotational
Explanation:
when something is move
How is Helium-3 different from the most common nuclear fuel- Uranium ?
Answer:
demonely it was different
If beaker A has 50 ml of fluid and Beaker B has 53 ml of fluid (which includes a key), what is the volume of the key?
Axel decided to start working out three times a week to stay healthy. Which type of disease prevention is being described?
Answer:
A
Explanation:
behavior modification
Which factor
was most important in Pizarro's
conquest of the Incas?
O The Incan Empire had been weakened by a long civil
•
The Spanish were able to capture most of the Incas' artillery.
O Pizarro brought his vast personal wealth with him from Spain.
•
Pizarro's army engaged in guerilla warfare.
Answer:
A. The Incan Empire had been weakened by a long civil war.
Answer:
The correct answer is A. The Incan Empire had been weakened by a long civil war
Explanation:
I took the Test
Explain the oxidation of saturated fatty acids
Answer:
Fatty acids, obtained from the breakdown of triglycerides and other lipids, are oxidized through a series of reactions known as β-oxidation. In each round of β-oxidation, 1 molecule of acetyl-CoA, 1 molecule of NADH, and 1 molecule of FADH2 are produced.
The temperature of a sample of iron increased by 23.1 °C when 267 J of heat was applied. What is the mass of the sample?
Answer:
25
Explanation:
go answer my question pls
Q = mcΔt
c iron = 0.449 (from table)
m = Q/cΔt
m = 267 /(0.449 x 23.1)
m = 25.74 g
Calculate the solubility of Hg2Cl2 given that its ksp is 1.1*10^-18?
What is the period of a water wave with a frequency of 0.5 Hz?
HELP ASAP WHICH ONE IS THE ANSWE A OR B OR C OR D ???? ! !!!
Answer:
1. C
2.B
Explanation:
is each of the following in a state of equilibrium? Explain.
5. Ice cubes are melting in a glass of water with a lid on it …
Because ...
6. Crystals of potassium dichromate were dissolved in water, and now the water is a uniform orange color with a small amount of crystal left in the closed container. …
Because ...
7. An apple that is left on the counter for a few days, it dries out and turns brown …
Because ...
Answer:
the correct answer is number 7
3. Suppose that a gas originally at standard temperature and pressure undergoes a change in which its pressure is quadrupled
What will be the temperature?
Let's see
Let
Pressure be PTemperature be TAccording to Amonton's or Gay Lussacs law
[tex]\\ \rm\Rrightarrow P\propto T[/tex]
So if pressure is quadrupled then temperature will be also quadrupled.
Label the equivalence point on the graph of pH versus volume of the titration of a strong acid
and strong base shown below.
a. What volume of base was needed to neutralize the acid?
b. What is the pH at the equivalence point?
c. how does the number of moles of hydro i um ions and hydroxide ions compare at the equivalence point?
Based on the titration curve, the titration is of a strong acid strong base and pH at equivalence point is 7.
What is equivalence point?The equivalence point in an acid-base titration is the point at which equal amount of acid and base have reacted.
The equivalence point in a strong acid-strong base titration is at pH 7.
In a weak acid-strong base titration, the pH is greater than 7 at the equivalence point.
In a weak base-strong acid titration, the pH is less than 7 at the equivalence point.
From the titration curve;
volume of base was needed to neutralize the acid is 50 mL pH at the equivalence point is 7the number of moles of hydronium ions and hydroxide ions at the equivalence point are equal.Therefore, the titration curve is of a strong acid strong base.
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Cuánto equivale.1022 átomos de carbono en moles
Answer:
I don't understand your language sirWhat is the only way to confirm that a chemical change has taken place?
O A. You can observe a color change.
B. You can see that the mass of material has changed.
C. You can record a temperature change.
D. You can tell that a new substance has formed.