Chemistry High School

Does anyone know this?

Does Anyone Know This?

Answers

Answer 1

Answer:

Not balanced. There are different number of atoms on each side of equation.

Explanation:

Given balanced chemical equation:

Chemical equation:

3C₂H₄ + 3O₂    →       4CO₂ + 6H₂O

The equation is not balanced because  umber of moles of C, H and O are not balanced. It consist of six moles of C, 12 moles of H and six moles of oxygen on left side of equation while on right side there are 4 moles of C fourteen moles of oxygen and twelve moles of hydrogen present.

Balanced chemical equation:

C₂H₄ + 3O₂    →       2CO₂ + 2H₂O

Now the equation became balanced. There are two moles of carbon, four moles of hydrogen and six moles of oxygen are present on both side of equation.

Related Questions

If 23.17 g of beryllium (Be) reacts with water at standard temperature and pressure,
how many liters of hydrogen (H2) are produced?

Answers

Volume of H2 produced = 57.6576 L

Further explanation

Given

23.17 g Be

Required

Volume of H2

Solution

Reaction

Be(s)+H2O(g)→BeO(s)+H2(g)

mol Be :

= 23.17 g : 9 g/mol

= 2.574

From the equation, mol H2 : mol Be = 1 : 1, so mol H2 = 2.574

Volume H2(assumed at STP, 1 mol=22.4 L) :

= 2.574 x 22.4 L

= 57.6576 L

what is the barycenter of the moon and the earth​

Answers

Answer:

The barycenter is the point in space around which two objects orbit. For the Moon and Earth, that point is about 1000 miles (1700 km) beneath your feet, or about three-quarters of the way from the Earth's center to its surface.

Explanation:

Mechanical energy is the total amount of and energy in a system. science

Answers

Answer:

Hey do you know if "horsleyjaydyn" is a girl you commented once she was a guy so

Explanation:

plsss help ASAP!!!
BRAINLIEST

Answers

Answer:

-175.15

Explanation:

1.0 °C = 274.15 K

2.0 °C = 275.15 K

3.0 °C = 276.15 K

4.0 °C = 277.15 K

5.0 °C = 278.15 K

6.0 °C = 279.15 K

7.0 °C = 280.15 K

8.0 °C = 281.15 K

9.0 °C = 282.15 K

371.7 k hope this helps

PLEASE HELP ME ILL GIVE BRAINLIEST

Answers

Answer:

TRUE :)

Explanation:

blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.

Answer:

False

Explanation:

it takes it to tha lungs.

A bathtub is half full of warm water. How could the
thermal energy of the water be increased? Check
all that apply.

Answers

Answer: A. B and C

Explanation:

I'm pretty sure this is right....

Have a great day :)

Answer: It is A,B. and C.= Add hot water to the tub.

Heat the water in the tub without adding more water.

Add more water at the same temperature to the tub.

Explanation: I got it correct.

A 1.0-mole sample of potassium mass is?

Answers

Answer:

Here is your ans

Explanation:

potassium mass is 39.0983u

Tq

if you add 5 protons, 4 neutrons, and 3 electrons what is the net charge of the atom

Answers

The answer would be 2 protons because protons are positive and electrons are negative so 5-3=2 and neutrons are neutral they don’t do anything to the charge of the atom

A student uses eight chocolate sandwich cookies to model the Moon's phases. The student separates each cookie and removes frosting to show how the Moon looks at each phase. How would the student create the Waning Gibbous phase?

Answers

The link below is a picture of the "Waning gibbus" phase,  really hope that it helps you out :D

How would a flood impact an ecosystem?


Loss of life


Displacing organisms' habitats


Polluting bodies of water as the floodwater recedes


All answers are correct

UPDATE: Just took the quiz the answer is D. All of them.

Answers

Answer:

all of them

Explanation:

took test

Floods can cause soil erosion and sedimentation. It will destroy all the properties of human beings. All the options are correct. Thus the correct option is D.

What is Flood?

Flood is defined as a natural disaster which results from the overflow of water on land. It is mainly generated by the heavy rainfall, sudden snow melt, etc. It affect the ecosystem adversely.

The floods are mostly affected to the coastal regions. It is even a threat to life of people. The habitat of aquatic organisms are destructed by the floods. The ground water is found to be contaminated with pathogenic microbes and causes water borne diseases.

As a result of floods the life of small insects which play a primary role in the ecosystem of food chain is also affected. All fields like education, communication, transport, etc. of our state is affected by the floods.

The floods can cause loss of people, low water quality, destruction of habitats. Some times the effect of flood in our life will be long lasting.

Thus the correct option is D.

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What rule/principle States that electrons fill orbital from lowest energy to highest energy?
A: Aufbau principle
B: Hund's rule
C: Pauli exclusion principle ​

Answers

The aufbau principle, from the German Aufbauprinzip (building-up principle), also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

The orbital filling and electron configuration are based on various principles. The Aufbau principle states that electrons fill the orbital from lowest to highest energy levels. Thus, option A is correct.

What is the Aufbau principle?

The Aufbau principle is the rule that states about the filling of the electron in the various orbitals of an atom. It defines the filling of the lower atomic orbitals before the higher levels are filled.

This principle allows for determining the electronic configuration of the atom. The rule states that the electron first occupies the lowest energetically unrestricted orbits that can hold a certain number of electrons. The electron can only move to a higher level when the electron is filled in the previous subshell.

Therefore, option A. the Aufbau principle gave the filling of electrons in the lowest energy level.

Learn more about the Aufbau principle here:

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Which describes an example of ecological succession?​

Answers

Answer:

b. a meadow replacing a pond in it's flood plain

Explanation:

I'ts a secondary succession.

Does the following compound contain a polyatomic ion? NH4NO3

Answers

Answer:

Yes

Explanation:

HELP ASAP DUE IN 5 MINUTES

Answers

the second one i think, hope this helps

Answer:

 a

Explanation:

eseasdasdsadasdadasda
r

Answers

bdhejweisif djseuhehsbs sshsdjdjdle

Which of the following best describes what happens when hydrogen and oxygen to form water?
Atoms are changing place with other atoms
Hydrogen and oxygen are undergoing change of states.
Hydrogen and oxygen are stable condition
Atoms are combining to form molecules

Answers

Atoms are combining to form molecules

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Answers

the lungs. it travels to the lungs

Pls help!!!

Briefly describe how plasma TVs display colour.

Answers

When the electricity flows into a tube, gas atoms crash inside producing invisible ultraviolet rays. There is a white phosphor coating that turns the invisible rays into visible light. In a plasma tv the cells are like tiny cfls only coated in phonsophers that are rgb

Animals need various nutrients in order to live and grow. Nitrogen, for example, is a nutrient that is needed to form molecules found in genetic material. How do animals obtain nitrogen? A. They eat plants which have absorbed nitrogen from the soil. B. They create nitrogen in their bodies using other nutrients as building blocks. C. They breathe in and absorb nitrogen gas from the atmosphere. D. all of these

Answers

Answer:

It's A

Explanation:

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.

Does the temperature of the solvent (water) affect the rate of dissolving?​

Answers

Yes. Heating up the solvent gives the molecules more kinetic energy. The more rapid motion means that the solvent molecules collide with the solute with greater frequency and the collisions occur with more force. Both factors increase the rate at which the solute dissolves.

what is Radio Waves and its defonation

Answers

Answer:

radio waves are the sound waves that are produces by a radio

Explanation:

If Jorge wanted to measure the distance between the Sun and the closest star to it, which unit should he use? no guessing

kilometer


meter


astronomical unit


light year

Answers

Answer:

i think kilometer or light year

Explanation:

What is the smallest unit found in a bar of gold. A. atom. B. Cell. C. Element. .D Nucleus PLEASE HELP

Answers

Answer:

c. element

Explanation:

Because gold is its own element, a gold bar is only made of one element.

The smallest unit found in a bar of gold is the nucleus of its atom.  The core of an atom is called its nucleus which contains the nucleons protons and neutrons.

What is nucleus?

An atom is composed of  nucleons and electrons. The core of an atom is called its nucleus. Protons and neutrons are located inside the nucleus. They are called the nucleons.

The electrons are revolving around the nucleus through circular trajectories of fixed energies. Every elements are composed of their atoms. Atoms of different elements combine together to form compounds.

Gold is 79th element in periodic table. It is a transition metal in d-block. As every other elements the smallest unit are atoms where the atomic nuclei are even smaller units.

Find more on atomic nucleus:

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What is a similarity between the respiratory and excretory systems?

A They both break down food.
B They both remove waste from the body.
C They both exchange gases within the body.
D They both transport nutrients throughout the body.

Answers

Answer:

B

Explanation:

The respiratory removes carbon, and the excretory removes other waste products

Both collect waste from body cells and removes them. The respiratory system moves gases (oxygen and carbon dioxide) and the excretory system moves liquids and solids.

What accounts for the fact that liquid mercury forms into tight beads while ethyl alcohol do not?

Answers

Answer:

Pretty sure this is wrong but worth a shot

Explanation:

Ethyl Alcohol is a clear, colorless liquid with a wine-like odor. It is used in alcoholic . Do not rely on odor alone to determine ... This chemical is on the Special Health Hazard Substance. Ethyl Alcohol can affect you when inhaled and by passing through the Ethyl Alcohol may form an ignitable vapor/air mixture in.

Cuantos gramos de nitrato de potasio (KNO3) son necesarias para preparar 800ml de solucion al 12 % m/v

Answers

Answer:

96 g

Explanation:

Tomando en cuenta que estamos hablando de una solución de Nitrato de potasio cuya concentración es 12% m/V, debemos entonces usar la expresión de %m/V:

%m/V = msto / Vsol * 100   (1)

De esta expresión, debemos despejar la masa de soluto (msto) que es precisamente el valor que estamos buscando. Al hacer el despeje tenemos:

msto = %m/V * Vsol / 100    (2)

Ahora solo nos queda sustituir los valores dados y resolver:

msto = 12 * 800 / 100

msto = 96 g de KNO₃

Espero te sirva.

Please help (: List and describe the locations and conditions in the Four zones of a lake

Answers

Explanation:

littoral horizantal raw curated

PLEASE HELP I don’t know how to do this

Answers

Moles of Iron : 1.01

Further explanation

Given

Reaction

Fe2O3 + 3CO → 2Fe + 3CO2

34 liters of CO

Required

moles of Iron

Solution

Assumed at STP

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

so for 34 L :

= 34 : 22.4

= 1.518 moles

From the equation, mol Fe :

= 2/3 x moles CO

= 2/3 x 1.518

= 1.01 moles

The two chromosomes that have genes for the same trait in the same order are known as

Answers

Answer:

Homologous chromosome

Please help I need to get this done before it's due-

The distance for star X is not given. How far away do you think it is from earth? ​

Answers

I’m just estimating it should be around 56
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