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.
You can compress a substances in the gas state, but not in the solid or liquid state. Use the particle theory to explain why？
Answer:
we can compress gas instead of liqued or solid because it contains a lot of space between its particles.
Explanation:
particles of gases are far apart from each other and there motion are irregular as well, due to the free free space gases can be expressed.
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
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.
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.
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 %.
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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.
three examples of disaccharides
Answer:
sucrose
lactose
maltose
Hope this helps :)
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.
1. What keeps a star from breaking apart ?
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!!
How did Louis Pasteur’s experiments lead to new scientific understandings of germs? A.Experiments with cooking food showed that disease-carrying germs in food could be killed when heated. B.Experiments with different magnification lenses showed that germs were real and could be observed. C.Experiments with animals showed that dominant genes could lead to risks of disease. D.Experiments with shallow dishes showed that groups of germs could be grown so they could be seen without microscopes.
Answer:
A.Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.
Explanation:
Louis Pasteur (1822-1895) is regarded as the father of immunology. He extensively studied microbes and their effect on food. He discovered that microorganisms were responsible for the spoilage of food.
His most important discovery was the fact that heating wine to 55°C will lead to the death of microorganisms and prevented wine from spoiling and did not affect its taste. This process is known as pasteurization.
Answer:
A
Explanation:
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:
(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
The individual components of a solution
Answer:
"can be separated using physical means" is the answer
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
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.
what labatory activity involves a chemical change
Answer:
buring of paper, burning of wood etc are the examples of chemical change
A student describes the motion of particles in each of the four different states of matter
State 1: particles that are charged move freely
State 2: particles move freely at high speed
State 3: particles are locked in place
State 4: particles slide past one another
which state describes solids?
State 3: particles are locked in place describes the solid state exactly.
What is Solid State ?The physical characteristics of matter in which molecules or atoms are unable to move freely and are instead required to maintain their borders independently and in fixed connection to one another.
One of the four basic states of matter is solid.
The least energy molecules are those that form solids and are tightly grouped.
The solid's defining structural rigidity and resistance to external pressure.
Solids have precise mass, volume, and shape as well as compact arrangements of their constituent particles. Between molecules, there is not much intermolecular space.
Therefore, State 3: particles are locked in place describes the solid state exactly.
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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!!!!
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 repulsionWhich 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.
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.
what is the electrons...
Electrons are negativity charge particle found in an atom. His twine is Proton who is positively charged
> 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.
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.
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
Another way of writing 0.00000731 g
Answer:
nanograms - 7310
kilograms - 7.310000000000001e-9
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.
5 Laboratory instructions require students to as- semble a measuring device containing many small parts and springs. Which piece of safety equipment would be required in this investigation
A apron
B gloves
c lab coat
D safety glasses
Answer
C lab coat
Explanation
Answer:
c
Explanation:
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.