I'll give brainiest a person who answers first correctly :) I promise



What is the stored energy of an object called?

Kinetic energy
Mechanical energy
Potential energy
Translational energy

Answers

Answer 1

Answer: Potential energy

Explanation:

Answer 2
the answer is potential energy !.

Related Questions

Which of the following is not a good safety practice in the kitchen?


A
keep cleaning agents in a safe place away from food supplies

B
keep household cleaners and other hazardous chemicals in their original container

C
mix household cleaners to get a stronger cleaning product

D
keep the phone number for the poison control hotline next to the phone

Answers

Answer:

C. Mix household cleaners to get a stronger cleaning product

Explanation:

dont ever try that

C. Mix household cleaners to get a stronger product.

This is not safe because mixing chemicals may cause a toxic gas to form. This gas is toxic to people and can cause health issues.

I'm really sorry it took so long the school Wifi cut off while i was writing it lol

strength, sickness, Stretchiness, and color are all different
1:Traits
2:Futures
3:None of the above

Answers

Answer:

1) Traits

Explanation:

Strength, sickness, Stretchiness, and color are all different because they result in a different body part and there all traits of the body

What are in the energy levels that surround the nucleus of an atom?

Answers

electrons are the thing in the outer energy levels

how many grams is 26.17 L Xe at STP​

Answers

Answer:

Mass = 157.56 g

Explanation:

Given data:

Mass of Xe in gram = ?

Volume = 26.17 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Solution:

we will calculate the number of moles first.

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

1 atm ×26.17 L = n×0.0821 atm.L/ mol.K  × 273.15 K

26.17 atm.L = n× 22.43 atm.L/ mol

n = 26.17 atm.L / 22.43 atm.L/ mol

n = 1.2 mol

Mass of Xe:

Mass = number of moles × molar mass

Mass = 1.2 mol × 131.3 g/mol

Mass = 157.56 g

A student dissolves of styrene in of a solvent with a density of . The student notices that the volume of the solvent does not change when the styrene dissolves in it. Calculate the molarity and molality of the student's solution. Be sure each of your answer entries has the correct number of significant digits.

Answers

Answer:

0.576M and 0.655m

Explanation:

...Dissolves 15.0g of styrene (C₈H₈) in 250.mL of a solvent with a density of 0.88g/mL...

Molarity is defined as moles of solute (Styrene in this case) per liter of solution whereas molality is the moles of solute per kg of solvent. Thus, we need to find the moles of styrene, the volume in liters of the solution and the mass in kg of the solvent as follows:

Moles styrene:

Molar mass C₈H₈:

8C = 12.01g/mol*8 = 96.08g/mol

8H = 1.005g/mol* 8 = 8.04g/mol

96.08g/mol + 8.04g/mol = 104.12g/mol

Moles of 15.0g of styrene are:

15.0g * (1mol / 104.12g) = 0.144 moles of styrene

Liters solution:

250mL * (1L / 1000mL) = 0.250L

kg solvent:

250mL * (0.88g/mL) * (1kg / 1000g) = 0.220kg

Molarity is:

0.144 moles / 0.250L =

0.576M

Molality is:

0.144 moles / 0.220kg =

0.655m

A chemist measures the amount of chlorine gas produced during an experiment. He finds that 98.2 of chlorine gas is produced. Calculate the number of moles of chlorine gas produced.

Answers

Answer:

[tex]1.385\ \text{moles}[/tex]

Explanation:

[tex]m[/tex] = Mass of chlorine gas produced = [tex]98.2\ \text{g}[/tex]

[tex]M[/tex] = Molar mass of chlorine gas [tex]Cl_2[/tex] = [tex]70.9\ \text{g/mol}[/tex]

Number of moles is given by

[tex]n=\dfrac{m}{M}[/tex]

[tex]\Rightarrow n=\dfrac{98.2}{70.9}[/tex]

[tex]\Rightarrow n=1.385\ \text{moles}[/tex]

Number of moles of chlorine gas produced is [tex]1.385\ \text{moles}[/tex].

henry moseley showed how the periodic table could be

Answers

Answer: Moseley's experiments in X-ray spectroscopy showed directly from their physics that cobalt and nickel have the different atomic numbers, 27 and 28, and that they are placed in the Periodic Table correctly by Moseley's objective measurements of their atomic numbers.

Explanation:

On June 21st which location below will experience the longest amount of daylight?

1. Equator

2. North pole

3. Tropic of Capricorn

Answers

Answer:

2. North pole

Number of moles in 9.04 x 1023 molecules of H2O?

Answers

Answer:

44x+7y

Explanation:

The number of molecules in one mole of water is 6.02 × 10²³. Therefore, the number of moles of carbon dioxide which contains 9.04 × 10²³ molecules is 1.50.

What is Avogadro number ?

The number of atoms that constitutes one mole of a substance is called Avogadro number. It is equal to  6.02 × 10²³. Thus, one mole of every elements contains Avogadro number of atoms.

Similarly, one mole of a compound contains  6.02 × 10²³ number of molecules. Thus, one mole of carbon dioxide contains these much molecules.

Given the number of molecules of water = 9.04 × 10²³

Then, no.of moles = number of molecules/ Avogadro number.

no.of moles =9.04× 10²³ /6.022 × 10²³  = 0.68.

Therefore, the number of moles of H₂O that contains 9.04 × 10²³molecules is 1.50

Find more on Avogadro number:

http://brainly.com/question/28834341

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What is the source of thermal energy for Earth's mantle?


A Earth's core

B. global warming

C. mantle downwelling

D. radiation from the sun

Answers

Answer:

D. Radiation from the sun

Explanation:

The main source of thermal energy for the earth is Sun. The sun is major source which provide heat energy and light energy to the earth. The sun converts almost 4 million tons of energy into electromagnetic radiations which is a source of thermal energy for Earth's Mantle.

An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.81 amu. What is the percent abundance of ¹²²X?

Answers

Answer:

40.5%  is abundance of X-122

Explanation:

we know there are two naturally occurring isotopes of X, X-120  and X-122.

First of all we will set the fraction for both isotopes

X for the isotopes having mass 122

1-x for isotopes having mass 12 0

The average atomic mass of X is 120.81 amu

we will use the following equation,

122x + 120 (1-x) = 120.81

122x + 120 - 120x = 120.81

122x- 120x = 120.81 -120

2x = 0.81

x= 0.81/2

x= 0.405

0.405 × 100 = 40.5%

40.5%  is abundance of X-122 because we solve the fraction x.

now we will calculate the abundance of X-120.

(1-x)

1 - 0.405 = 0.595

0.595  × 100 = 59.5 %

59.5 %  for X-120.

A sample of crude oil contains 3.09 mM naphthalene, 10.0 mM methylnaphthalene, 23.2 mM dimethylnaphthalene, and 14.4 mM trimethylnaphthalene. What is the total number of moles of all naphthalene compounds combined in 100.0 mL of the oil

Answers

Answer: 0.00507 moles

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute

[tex]V_s[/tex] = volume of solution in ml

1. moles of napthalene = [tex]\frac{3.09\times 0.001\times 100.0}{100}=0.000309moles[/tex]

2. moles of methyl napthalene = [tex]\frac{10.0\times 0.001\times 100.0}{1000}=0.001mole[/tex]

3. moles of dimethyl napthalene = [tex]\frac{23.2\times 0.001\times 100.0}{1000}=0.00232moles[/tex]

4. moles of trimethyl napthalene = [tex]\frac{14.4\times 0.001\times 100.0}{1000}=0.00144moles[/tex]

Thus total moles of all naphthalene compounds combined is (0.000309+0.001+0.00232+0.00144) = 0.00507.

According to VSEPR theory, if there are three electron domains in the valence shell of an atom, they will be arranged in a(n) __________ geometry.A. linearB. trigonal planarC. octahedralD. trigonal bipyramidalE. tetrahedral

Answers

Answer:  B. trigonal planar

Explanation:

Valence Shell Electron Pair Repulsion Theory (VSEPR) is a model to predict the geometry of the atoms making up a molecule where atoms are arranged such that the forces of repulsion are minimum.

If a central atom is bound to three electron domains ,the number of electron pairs is 3, that means the hybridization will be [tex]sp^2[/tex] and the electronic geometry of the molecule will be trigonal planar as the electron pairs will repel each other and attain a position which is most stable.

Example: [tex]BCl_3[/tex] with 3 electron domains has trigonal planar geometry.

Scientists describe the motion of an object in relation to which of the following? A)Gravitational pull
B)[Force
C)Another object
D)Its mass

Answers

Answer:

A) Gravitational Pull

Explanation:

Objects on Earth are pulled toward the center of Earth. The force of gravity, like all other forces, can cause changes in the speed of objects.

Answer:

c

Explanation:

Classify each of the following as a Strong acid (sa) or a Weak acid (wa) and indicate how each should be written in aqueous solution. Classify ... In solution this acid should be written as: fill in the blank 1 1. nitric acid fill in the blank 3 2. perchloric acid fill in the blank 5 3. hydrofluoric acid

Answers

Answer:

1. nitric acid: sa

2. perchloric acid: sa

3. hydrofluoric acid: wa

Explanation:

A strong acid (sa) is the one that is completely dissociated into ions in water. Conversely, a weak acid (wa) is not completely dissociated in water.

From the options, the strong acids are:

1. nitric acid (HNO₃). It dissociates completely into ions when is dissolved in water, as follows:

HNO₃ → H⁺ + NO₃⁻

2. perchloric acid (HClO₄). It is completely dissociated in water as follows:

HClO₄ → H⁺ + ClO₄⁻

The weak acid is hydrofluoric acid (HF). In water, only a small proportion is dissociated into ions. The proportion of ions formed is given by the equilibrium constant Ka. The dissociation is written by using double arrows:

HF ⇄ H⁺ + F⁻

In the nitrogen cycle, plants use nitrogen compounds to produce *

Answers

Answer: Once nitrogen is converted into compounds like ammonium and nitrate, these can be taken up from soils by plants and then the nitrogen can be used to form macromolecules like proteins and nucleic acids (DNA and RNA).

The answer is proteins

Which reservoir is found underground in the cracks and spaces in the soil, sand, and rock?

Glaciers
Ground water
Polar ice caps
Rivers

Answers

Answer:

Ground water

Explanation:

The ground water reservoir is found underground in cracks and spaces in the soil, sand and rock.

Ground water is a very important portion of the water cycle where water is stored in an aquifer.

Aquifers are porous and permeable formations that stores ground water within them.

In this manner, ground water system is recharged by infiltration of water from the surface. Water percolates and collects inside an aquifer in this manner.

Answer:

Ground Water

Explanation:

Please help me answer this question

Answers

You are right, ,,,, the electromagnetic spectrum is radio waves, microwaves, infrared radiation , visible light, ultra violet, x rays , gamma rays

Calculate the number of vacancies in gold per cubic centimeter at 1000 K, where the density and atomic weight for gold at are 18.63 g/cm3 and 196.9 g/mol, respectively, at 1000 K. The energy for vacancy formation in gold is 0.98 eV / atom. (Please express scientific notation using E to indicate the exponent - for example, 2.5E3

Answers

Answer:

autom is 18.63 g

Explanation:

there

Which element is an alkali metal?
A.
Sodium
B.
Calcium
C.
Hydrogen
D.
Zinc

Answers

It’s going to be A sodium, that’s an alkali metal
Sodium is an alkali, your answer is A.



How many moles of Fluorine (F2) are

needed to completely react 8.0

moles of NF3?

Answers

Answer:

12 moles of F₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

N₂ + 3F₂ —> 2NF₃

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Finally, we shall determine the number of mole of F₂ needed to produce 8 moles of NF₃. This can be obtained as illustrated below:

From the balanced equation above,

3 moles of F₂ reacted to produce 2 moles of NF₃.

Therefore, Xmol of F₂ will react to produce 8 moles of NF₃ i.e

Xmol of F₂ = (3 × 8)/2

Xmol of F₂ = 12 moles

Thus, 12 moles of F₂ is needed for the reaction.

HELP PLEASE
Which of these is measured in meter per second per second?

•speed
•velocity
•acceleration
•displacement ​

Answers

IM NOT SURE IF MY ANSWERS RIGHT SO IM NOT POSITIVE SORRY

Xavier used a chart to list the roles of two different molecules in protein production.



Which headings best complete the chart?

Y: DNA
Z: tRNA
Y: tRNA
Z: DNA
Y: mRNA
Z: tRNA
Y: tRNA
Z: mRNA

Answers

Answer:

Y: tRNA

Z: DNA

Explanation:

This question involves two different nucleic acid molecules that are involved in protein production. Xavier used a chart to highlight the functions these nucleic acids perform during protein synthesis.

- Transfer RNA known as tRNA is a type of RNA molecule found in the ribosomes. It functions to read the mRNA codon and carry corresponding amino acid to the ribosomes for linking with one another. Based on this, "Y" on the chart is a tRNA molecule.

- Deoxyribonucleic acid, also known as DNA, is a molecule found in the NUCLEUS whose function is to store the genetic information in the cell. DNA carries the information needed for the synthesis of protein. Based on this, Z is a DNA molecule.

Answer:

The guy above is right! I got 100 on my test :]

which of the following is required for a reaction to occur?
a. energy
b. collisions
c. activation energy
d. all of the above

Answers

I WOULD SAY d. ALL OF ABOVE

analysis shows the presence of 203 ug of cholesterol. what is the correct set up for conversion of mcg to kg

Answers

Answer:

The answer to your question is given below

Explanation:

From the question given above, the following data were obtained:

Mass of cholesterol (in μg) = 203 μg

Mass of cholesterol (in Kg) =?

The following conversion scale can be used to convert micro grams (μg) to kilogram (kg).

1 μg = 1×10¯⁹ Kg

Therefore,

203 μg = 203 μg × 1×10¯⁹ Kg / 1 μg

203 μg = 2.03×10¯⁷ Kg

Thus, 203 μg is equivalent to 2.03×10¯⁷ Kg

If you start with 8.95 g of crude sulfanilamide and recrystallize it from ethanol to recover 7.20 g of pure sulfanilamide, what is the percent recovery

Answers

Answer:

[tex]\% rec=80.4\%[/tex]

Explanation:

Hello!

In this case, since the percent recovery for this crystallization operation is computed as shown below:

[tex]\% rec=\frac{m_{recovered}}{m_{initial}} *100\%[/tex]

Thus, by plugging in the initial 8.95 g and the recovered 7.20 g, we obtain:

[tex]\% rec=\frac{7.20g}{8.95g} *100\%\\\\\% rec=80.4\%[/tex]

Best regards!

As an electron in an atom moves from a higher energy state to a lower energy state, the atom does what?

Answers

Answer: absorbs energy

Explanation:

Answer:

releases energy

Explanation:

Drag the tiles to the correct boxes to complete the pairs.
Match the natural resources to their uses.
water
forests
wetlands
parks
paper
preserving aesthetic value
irrigation
trapping sediments

Answers

Answer:

water - irrigation

forests - paper

wetlands - trapping sediments

parks - preserving aesthetic value

Explanation:

One important use of water is for the irrigation of farmlands. Irrigation makes it possible for farming activities to continue all year round.

The papers yield pulp which is used to produce paper. This implies that paper is important product obtained from the forest.

The wetlands trap sediments and retain particulates from both onsite and offsite sources(blue earth county).

A park serves to preserve aesthetic value. This is a primary importance of the parks.


Zinc chloride is soluble.

Give the name of a soluble carbonate.
Give the name and formula of the precipitate formed when zinc chloride reacts with the
carbonate in a.

4 a Give the names of two solutions that would react together to form a precipitate of lead
chloride.
b Give the name and formula of the soluble product of this reaction.
Write the word equation for this reaction.

5 Copy and balance the following equations and add state symbols. Then write a word equation for
each.
a NaOH + CuCl2-NaCl + Cu(OH)2
b Ca(NO3)2 + Na2CO3 - CaCO3 + NaNO3
(NH4)2SO4 + Pb(NO3)
2NH4NO3 + PbSO4
с

Answers

Sodium Carbonate is Soluble

-

Lead Iodide and Sodium Chloride

PbCl2 + NaI

Lead Iodide + Sodium Chloride —> Lead Chloride + Sodium Iodide


2NaOH + CuCl2 —> 2NaCl + Cu(OH)2
Sodium Hydroxide + Copper Chloride —> Sodium Chloride + Copper Hydroxide

Ca(NO3)2 + Na2CO3 —> CaCO3 + 2NaNO3
Copper Nitrate + Sodium Carbonate—> Calcium Carbonate + Sodium Nitrate

(NH4)2SO4 + Pb(NO3)2 —-> 2NH4NO3 + PbSO4

Why does a mixture of hydrogen and oxygen in a balloon not spontaneously explode at room temperature

Answers

Answer:

Because the molecules of the mixture would be compact or bond together at room temperature. In this case, both gases will condense to form water (or ice, if the room temperature is prolonged) and such droplets of water will not cause a balloon to spontaneously explode at room temperature.

Explanation:

A mixture of hydrogen and oxygen will form water. Recall that the chemical formula for water is H₂O, where H represents Hydrogen and O represents Oxygen.

A balloon is a light (not thick) solid substance with a thin membrane when blown or filled with some elements or gases.

Room Temperature means cool or cold temperature. You already know that generally at room temperature, the molecules of any substance will stick together or will become less mobile (less spontaneous).

In this case, hydrogen gas and oxygen gas will go through a process called condensation - to form water - and then through the process called freezing - to form ice.

At room temperature, the gases will first change state (state of matter) from gaseous to liquid and then from liquid to solid.

This is why the balloon will NOT spontaneously explode.

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