CHEMISTRY HIGH SCHOOL

Ack please help on this problem

Answers

Answer 1

Answer:

Answer:

Only the oxygen needs to be balanced. There are equal numbers of hydrogen and carbon

Explanation:

Given expression:

C₂H₄ + O₂ → 2H₂O + 2CO₂

The law of conservation of mass suggests that chemical equations be balanced since atoms are neither created nor destroyed in the course of a chemical reaction. In retrospect, bonds are broken and chemical species are change to another form.

From the given equation, only oxygen is not balanced. This flouts the law of conservation.

On the reactant side, we have 2 oxygen on the product, we have 6.

Related Questions

A covalent bond in which electrons are shared unequally isa. polar.b. a double bond.c. ionic.d. polyatomic.
You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 12 dollars/hour, and each shift lasts 75 minutes. Your laundry requires 12 quarters/load. How many loads of laundry will each shift pay for if the cost per load rises to 16 quarters?
What kind of elements form covalent bonds?
As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?Protons, electrons, and neutrons are evenly distributed throughout the volume of the atom. Electrons are distributed around the nucleus and occupy almost all the volume of the atom. The nucleus is made of electrons and protons. The nucleus is made of protons, electrons, and neutrons.
The moon will always appear over the eastern horizon at the same time each night. true or false

What is the level of co2 in solo (soft drink)?

Answers

The fizz in a soda is caused by the carbon dioxide dissolved in the liquid. The amount of carbon dioxide dissolved in the a solo can not be found in the internet. This might be a secret of the company and it is only them who knows this but surely the level of CO2 is still in a safe for consumption level.

Which is denser, isopropyll alcohol( rubbing alchohol) or water?

Answers

Isopropyll is less dense than water.

If you were to get a gallon of water and a gallon of Isopropyll alcohol and weigh it, the alcohol would be lighted. Another way is to pour water and the alcohol in a cup and you will see that the alcohol is above the water(floating) because its lighter and less dense. Isopropyll alcohol is used for a lot of things, including cleaning certain components of computers:D

So based on this, water is more dense

Answer:

water is denser

Explanation:

if you were to fill 2 55 gallon barrels of each product the water would weigh more because water is more dense

Consider three gases: Ar, SF6, and Cl2. If 50.0 grams of these gases are placed in each of three identical containers, which container will have the highest pressure? The volume and temperature of all three containers are the same.

Answers

The ideal gas law:
$pV=nRT \Rightarrow p=(nRT)/(V)$
p - pressure, n - number of moles, R - the gas constant, T - temperature, V - volume

The volume and temperature of all three containers are the same, so the pressure depends on the number of moles. The greater the number of moles, the higher the pressure.
The mass of gases is 50 g.

$Ar \nM \approx 39.948 \ (g)/(mol) \nn=(50 \ g)/(39.948 \ (g)/(mol)) \approx 1.25 \ mol \n \nSF_6 \nM \approx 146.06 \ (g)/(mol) \nn=(50 \ g)/(146.06 \ (g)/(mol)) \approx 0.34 \ mol \n \nCl_2 \nM=70.9 \ (g)/(mol) \nn=(50 \ g)/(70.9 \ (g)/(mol)) \approx 0.71 \ mol$

The greatest number of moles is in the container with Ar, so there is the highest pressure.

What is the total number of joules released when a 5.00-gram sample of water changes from liquid to solid at 0°C?(1) 334 J (3) 2260 J
(2) 1670 J (4) 11 300 J

Answers

Energy released from changing the phase of a substance from the liquid phase to solid phase can be calculated by using the specific latent heat of fusion. The heat of fusion of water at 0 degrees Celsius is 334 J/g. Calculation are as follows:

Energy = 5 grams x 334 J/g
Energy = 1670 J

Answer:

It’s 2)

Explanation:

Any temperature on the Kelvin scale can be changed to Celsius degrees bya. subtracting 100 from it.
b. adding 212 to it.
c. subtracting 273 from it.
d. subtracting 32 from it.

Answers

c. subtracting 273 from it.

C. Subtract 273 from it

Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper). Molding is what a child does with Play-Doh or origami.

Answers

Complete question is;

Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper) is called what?

Molding is what a child does with Play-Doh or origami

Answer:

Modeling

Explanation:

In chemistry, we have a branch called modeling chemistry. In modeling, we organize together a series of models instead of a collection of topics. In this approach, we will begin with a phenomena that can be readily observed and are gradually develop the simplest model of matter that helps us make sense of our observations.

Now in the question, we are Molding a shape from soft, malleable materials like clay/plaster or constructing from harder materials like metal/paper. This means that we are organizing a series of models from either soft & malleable or harder materials to produce a simple model shape.

Thus, this is simply modeling.

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Which type of radiation is identical in mass and charge to a helium nucleus?a. beta b. alpha c. proton d. positron

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