Answer:
THE EMPIRICAL FORMULA FOR THE PURE HYDROCARBON IS CH4
Explanation:
A pure hydrocarbon contains carbon and hydrogen
Percentage composition of carbon = 74.5 %
Percentage composition of hydrogen = 25.5
In order to calculate the empirical formula of this hydrocarbon, you follow these couple of steps.
write out the percentage composition and divide by the relative atomic mass of the respective constituents.
Carbon = 74.5 / 12 = 6.2083
Hydrogen = 25.5 / 1 = 25.5
Next is to divide the values by the lowest factor
Carbon = 6.2083 / 6.2083 = 1
Hydrogen = 25.5 / 6.2083 = 4.1
Next is to write the empirical formula:
C H4
In conclusion the empirical formula for the pure hydrcarbon is CH4
what is the electrons...
Electrons are negativity charge particle found in an atom. His twine is Proton who is positively charged
A desk measures 42 inches long. How many meters is that?
Answer:1.067
Explanation:
look it up
What are the limitations of J.J. Thomson's model of the atom?
Explanation:
thanks for the points big man
Every object in the universe experiences some sort of force. It could be gravity holding Earth in orbit around the sun, or it could be someone sliding a chair across the floor. What best describes a force?
Answer:
See explanation
Explanation:
A force may be defined as a push or pull on an object as a result of its interaction with another object.
Thus, interaction between two objects is only possible because of the action of a force on each of the objects due to interaction between the objects.
For instance, the earth remains in its orbit due to the gravitational force of attraction between the earth and the sun. Many more examples of forces abound in science.
Which step in the scientific method requires you to use your senses to obtain information?
Answer:
The answer is Observation.
For you to observe the things around you then you need to use all your sense organs....
Answer: making an observation.
> So, to fill this shell, will it be easier for sodium to steal
seven more electrons from another atom, or will it be easier
for sodium to give up that one electron and get rid of that third
shell? Sodium is simply going to give away that last electron.
This means that it will lose an electron (negative charge) but
will keep the same number of protons (positive charges).
What will the sodium ion's overall charge be now?
40
- Exploring Anatomy & Physiology in the Laboratory
Answer:
+1
Explanation:
Sodium has one electron in its outermost shell. Sodium can not be able to accept seven electrons because the energy required for that process is very high. Sodium would rather loose its only valence electron to form a univalent positive ion Na^+.
This is an easier process. When sodium looses one electron, it now has a charge of +1.
explain how heat is exchanged through potential and kinetic energy
Answer:
Kinetic And Potential Energy Working Together All forms of kinetic energy are the result of a previous state of potential energy. For example, the stored chemical potential energy of a battery converts to electrical kinetic energy to transport electricity to a light bulb, which radiates thermal kinetic energy.
Explanation:
The magnesium atom has 12 electrons arranged 2,8,2. What must the atom do to become stable? gain 6 electrons a.lose 6 electrons b.gain 2 electrons c.lose 2 electrons
Answer:
The answer is Gain 6 electrons.
Explanation: The reason for this is that for electrons to be stable, you need a valence shell of 8 electrons. Since it is arranged 2, 8, 2 , the outer shell is 6 less than 8 meaning it needs to gain 6 electrons.
If an object has a density of 0.55 g/mL, what is its density in g/L (PLEASE HELP)
Answer:
glycerin
Explanation:
the amind acid of glycrine is 0.18 g/MLA.
1. What keeps a star from breaking apart ?
Which category would sawdust be in
Answer:
If you are asking what state of matter sawdust is, the answer is solid.
Explanation:
Solid substances can be hard or soft, but they have low compressibility and usually maintain their shape on their own.
what are two examples of natural laws in science
Answer:
Another example of a natural law in physics is Ohm's law that describes the relationship between voltage (V), current (I), and resistance (R). Natural laws are also found within chemistry. One of the most important laws in chemistry is the law of conservation of matter.
Is calcium carbonate an acid or alkaline
Calcium carbonate is neither acid nor base, it's a SALT.
Answer:
none,It is a salt of the calcium, ion a strong base and carbonic acid, a very weak acid. Answer: calcium carbonate is a salt, it is neither acid nor base
HOW MANY ATOMS DO THE REACTANTS HAVE? (602 + C6H1206)
Answer:
36
Explanation:
The O2 atoms have two atoms in them, and the glucose molecule has 24 atoms in them. Since there are 6 O2 atoms, there are 12 atoms. Add the number of atoms from the glucose molecule and the 6 oxygen atoms to get 36 atoms.
Another way of writing 0.00000731 g
Answer:
nanograms - 7310
kilograms - 7.310000000000001e-9
(5.93 x 103) (2.3 x10-2)
Answer:
when you multpily or divide powers of 10 you just add or subratact respectivley
Explanation:
(5.93 x 10 ^ 3) (2.3 x 10^ -2) = (5.93 * 2.3 ) x 10 ^ 3 +(-2)
= 13.639 x 10 ^ 3-2
= 13 . 639 x 10
1.3639 x 10^2
What is not a product of modern chemistry ?
Answer:
Modern chemistry describes the composition, structure, and physical and chemical properties of substances. ... The main aim of modern chemistry is to improve the communication and conversation among the scientists, researchers, engineers, and policymakers, who are working under the area of modern chemistry
Explanation:
I hope this helps you!!
Equal masses of water undergo condensation, deposition, evaporation, and sublimation. a) Which process releases the most energy? b) Which process absorbs the most energy?
Answer:
A. Condensation
B. Evaporation
Explanation:
Condensation releases energy when water vapor condenses to form water droplets. Evaporation absorbs energy whenever it changes from liquid to gas, the heat from the sun heats the water up and absorbs energy.
Is hydrogen gas a mixture or pure substance?
Answer:
pure hydrogen is a pure substance even though it consists of many different types of molecules. what makes it pure substance is that it is free from contamination.
What physical changes occured while you ate breaskfast?
What chemical changes occured while you ate breakfast?
Answer: your body converts the food into energy and gets rid of the uneeded stuff
Explanation: A physical change is a change that doesn't create a new substance or change the substance. Usually this involves a size or shape change. ... A chemical change is a change that creates a new substance or changes the substance. Usually, this involves color change, temperature change, and/or a new substance being formed.
hope this helps
True or False: When you measure something with a ruler, you should NOT estimate an extra digit. You only need to report the numbers you see on the ruler.
Answer:
False
Explanation:
It is important to give exact measurements.
The individual components of a solution
Answer:
"can be separated using physical means" is the answer
Paper clips are made of stainless steel. Steel is a mixture. There are different kinds of steel that have slightly different ratios of substances. Stainless steel is made of iron mixed with high-density metals. Carbon steel is made of iron mixed with carbon, an element with a lower density than metals. Would you expect the density of stainless steel and carbon steel to be the same? Why or why not? Font Sizes
No, firstly bc stainless steel and carbon steel mixed with different things, high-density metals and carbon.
High-density metals and carbon both has different density which will affect the steel when they combined with iron. So it cant be the same.
What is the percent yield for a certain reaction when 56.8 g of product was
obtained in the lab, but the theoretical yield was 64.4g?
Answer:
88.20%
Explanation:
% yields =( experimental yield /theoretical yield )x100%
= ( 56.8 ÷ 64.4 ) x100%
= 88.20%
The percent yield for the given reaction where in the product obtained is 56.8 g is 88.19%.
What is percent yield?Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.
In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.This condition arises when there are other simultaneous reactions taking place leading to the formation of product. It can also arise if there is incomplete removal of impurities from the sample .In the given example , percent yield=56.8/64.4×100=88.19%.
Thus, the percent yield of reaction is 88.19 %.
Learn more about percent yield,here:
https://brainly.com/question/2506978
#SPJ2
How does distance affect the forces of attraction an repulsion?
Explanation:
Increasing the separation distance between objects decreases the force of attraction or repulsion between the objects. Decreasing the separation distance between objects increases the force of attraction or repulsion between the objects. ... Electrostatic force and distance are inversely related. That is how distance affects the forces of attraction or repulsionIron has a density of 7.87mL. How much mass would a 12.3mL sample contain?
The correct answer is 96.80 grams
Explanation:
The density of a substance shows the total mass the substance contains in 1 mL or 1 cm3 as density is calculated by using the formula D= M (mass) / V (volume). This implies, Iron contains 7.87 grams per milliliter. Moreover, this value and formula can be used to calculate the mass or volume of any other sample. The process to calculate the mass of an iron sample with a volume of 12.3 mL is shown below.
D = M ÷ V
7.87 mL = x ÷ 12.3 mL - x represents the missing value. Now find the value of x by solving the equation
x = 7.87 · 12.3
x = 96.80
This means a sample of 12.3 mL contains a mass of 96.80 grams. Also, you can know this value is correct because if you divide the mass by the value the density is the same (96.80 grams ÷ 12.3 mL = 7.87 g/mL)
Which of the answer choices provides an accurate example of how knowledge of nuclear reactions has been used to benefit society
select all that apply.
1.Radiation in correct doses may be able to prevent and treat illnesses caused by viruses, such as HIV and influenza.
2. Nuclear fusion can be easily activated and controlled in nuclear power plants and harnessed to generate clean electricity.
3. Controlled fission chain reactions can be used to produce electricity in a nuclear-powered submarine.
4.Medical imaging devices use radioactive elements with short half-lives to see through the human body and diagnose patients.
Answer:
Controlled fission chain reactions can be used to produce electricity in a nuclear-powered submarine.
4.Medical imaging devices use radioactive elements with short half-lives to see through the human body and diagnose patients
Explanation:
A submarine uses nuclear vision as a source of energy. The heat from controlled nuclear fission reactions produces steam which drives a steam turbine to power the submarine.
In the area of medicine, medical imaging is becoming a popular technique for diagnosis of many illnesses. These radioactive elements with short half lives are used to see through the human body for the purpose of diagnosis.
Which subatomic particle weighs virtually zero? Electron Neutron Proton
Answer:
1) Electron
Explanation:
The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom.
Name two factors that affect the force of friction
Answer:
inertia and force
Explanation:
the inertia allows objects to move and force makes an object move
ULUI HIGISTUU 2 3 5 6 7 8 A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3was selected
Answer:
iiiiii<iiiiii
Explanation:
Answer:
4/J
Explanation:
Remember the triangle
m
v d
d=m/v
do this for the 4 questions.
1.7.36
2.10.5
3.1,846
4.2.71
so it would be 4
good luck!!!!