Answer:
0.034 = 34×10^-3
Explanation:
This is because the special point is notated until it goes in front of the first counting number
Scientific notation is a way of expressing numbers that are very large or very small in a compact and standardized format. 0.034 in scientifc notation is written as 3.4 × 10⁻³
In scientific notation, a number is expressed as the product of a coefficient and a power of 10. The coefficient is a decimal number greater than or equal to 1 but less than 10, and the power of 10 represents the magnitude of the number. The power of 10 indicates the number of places the decimal point must be moved to obtain the original number.
For example:
The number 4,500,000 can be written in scientific notation as 4.5 x 10⁶, where the coefficient is 4.5 and the power of 10 is 6.
The number 0.000043 can be written in scientific notation as 4.3 x 10⁻⁵, where the coefficient is 4.3 and the power of 10 is -5.
Scientific notation allows for easy representation of very large or small numbers and simplifies calculations involving these numbers. It is particularly useful in scientific fields where values such as distances, masses, and concentrations can vary over a wide range.
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is energy absorbed or released to separate the atoms in water molecules
Answer:
First of all, Energy is released when water molecules bond.
Explanation:
When a bond is formed its stability increases from their respective atoms. So energy is released but when we are breaking a bond we are changing a compound to a lower energy state to higher energy state it's stability decreases and requires a bit of extra energy higher stability of bond higher energy required to break it…
Please help it’s worth a lot!! I need the answer ASAP!!
Answer:
Show me the previous question so I can help
a density of 22.29 g/cm?
What is the mass of a block that measures 6.7 cm by 6.8 cm by 4.3 cm and has a density of 22.29 g/cm^3
Answer:
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which one IS an example of a homogenous mixture?
a- Chicken noodle soup (yum)
b- tea
c- r.r ice cream (rocky road)
Answer:
I think option ( b) tea is right answer
which consists of only one type of atom
a pure substance
a mixture
a compound
an element
Answer:
an element
Explanation:
elements like iron or copper consist of only one type
need help with these questions
Answer:
I don't know the answer sorry
What is a cell GJFFVf xfhdfvcdd
Answer:
Yeah
Explanation:
Amplify 1.5 force and motion answers??
Answer:
explain question please
Explanation:
which type of molecule contains two atoms bonded together
A) simple molecule
B) crystal
C) polymer
D) complex molecule
simple molecules contain two atom bonded together
Answer: Simple Molecule
Explanation: Ambigous question. What is the scientific definition of "simple molecule?" More by process of elimination than actual difinition, this is a simple molecule. It takes a minum of two atoms to make a molecule (by definition). A crystal is a collection of molecules, a polymer is a chain of molecules, and a complex molecule is, er . ., complex. The only reasonable, and best, answer is "simple molecule."
Expand the number 7.7046 X 10%
Answer:
0.77046
Explanation:
van dar waals are the dominant molecular force in the sodium chloride.
Answer:
Recall the two conceptual steps necessary to dissolve a solute and form a solution
Key Points
There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility.
The first conceptual step is dissolution, which corresponds to the force of the solvent-solvent and solute-solute intermolecular attractions that needs to be broken down.
The second conceptual step is solvation, which corresponds to the force of the solute-solvent intermolecular attraction that needs to be formed in order to form a solution.
Many intermolecular forces can contribute to solvation, including hydrogen bonding, dipole-dipole forces, Van Der Waals forces, and ion-dipole interactions.
Term
intermolecular forcesattractive and repulsive forces between molecules
The strength of the intermolecular forces between solutes and solvents determines the solubility of a given solute in a given solvent. In order to form a solution, the solute must be surrounded, or solvated, by the solvent. Solutes successfully dissolve into solvents when solute-solvent bonds are stronger than either solute-solute bonds or solvent-solvent bonds.
Qualitatively, one can determine the solubility of a solute in a solvent by using the rule “like dissolves like”. In general, solutes whose polarity matches that of the solvent will generally be soluble. For example, table salt (NaCl) dissolves easily into water (H2O) because both molecules are polar.
Intermolecular Forces and Their Importance in Solution Formation
There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility. If the solute is a solid or liquid, it must first be dispersed — that is, its molecular units must be pulled apart. This requires energy, and so this step always works against solution formation (always endothermic, or requires that energy be put into the system).
#pa follow and heart po para sa iba pang answer at pa brainlest answer na den
Teeth are part of the digestive system.
True or False
please help :(
Answer:
True
Explanation:
It all starts out going through your mouth in which you have to chew the food to swallow it.
CCC Systems and System Models Liquid gallium changes to a gas at 2229°C.
Describe how a model of gaseous gallium would compare to the model of liquid
gallium shown in the picture.
Gaseous gallium will consist of atoms separated from each other by a large distance and do not experience inter-particle attractive forces.
There are three states of matter;
SolidLiquidGasMatter can exist in all these states of matter depending on the extent of inter-particle attractive forces in the substance.
Inter-particle attractive forces are strongest in solids hence they have a definite shape and volume and do not flow.
Liquids have weaker inter-particle attractive forces than solids hence liquid particles can flow. Liquids have a definite volume but not a definite shape.
Gases have almost no inter-particle attractive forces between particles hence gas particles are separated by large distances and move at very high velocities. A gas does not have definite shape or volume.
A model of gaseous gallium will show atoms of gallium separated by large distances and do not experience inter-particle attraction.
A model of gas particles is shown in the image attached to this answer.
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What are natural shelters?
Answer:
Natural Shelters Do not overlook natural formations that provide shelter. Examples are caves, rocky crevices, clumps of bushes, small depressions, large rocks on leeward sides of hills, large trees with low-hanging limbs and fallen trees with thick branches.
Answer:
the shelter made from nature for wild animals
Well I need help in number 11, the equation is D=V0T
Answer:
d = 44 km (you have the answer?)
Explanation:
time = 35 minutes * 1 hour / 60 minutes
time = 0.58333 hours.
D = r * t
r = 75 km / hr
t = 0.58333 hours
d = 75 * 0.58333
d = 43.74 km
9. A 35.2-mL, 1.66 M KMnO4 solution is mixed with 16.7 mL of 0.892 M KMnO4 solution. Calculate the concentration of the final solution.
Answer:
I think that the answer is 0.79M
Which of the following volumes are equal to one liter? Select all that apply.
Check all that apply
10° nl.
1 dm
10 ml
1000 cm
100 dL
The volumes that are equal to one liter are 1 dm and 1000 cm and can be seen in Option B and D respectively. The information below shows the calculation to arrive at the answer.
Dimensional analysis can be defined as the method of conversion from one given unit to another. It is often required to deal with measures that are extremely small (e.g size of an atom) or extremely big, In such circumstances, a conversion between metric measuring units is typically essential.
We are to determine which volumes in the given option are equal to 1 Liter.
Following the International System of Units (SI);
a.
10° nl = 10 nanoliters
10 nanoliters = 1 × 10⁻⁸ Liters
∴
It is incorrect
b.
1 dm = 1 cubic decimeter
1 cubic decimeter is equivalent to 1 Liter.
∴
Option B is correct
c.
10 ml = 10 milliliters
10 milliliters = 0.01 Liter
∴
Option C is incorrect
d.
1000 cm = 1000 centimeters
1 cm = 0.001 Liter
∴
1000 cm = 1 × 0.001 Liters
1000 cm = 1 Liters
Option D is correct
e.
100 dL = 100 deciliters
1 deciliter = 0.1 Liters
∴
100 deciliters = 10 Liters
As such, this option is also incorrect.
Therefore, we can conclude that Only Option B and D are the volumes that are equal to one Liter.
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A homogeneous mixture is a composition of two or more
impure substances in a definite proportion, displaying non-
uniform characteristics.
TRUE
FALSE
The answer is FALSE. I did it on ck-12
A chemist investigates the
I) melting point
II) flammability
III) boiling point
of acetone, a component of fingernail polish
remover. Which is/are physical?
1. II only
2. I and II only
3. II and III only
4. III only
5. I. II and III
6. I and III only
7. I only
8. None of these
Answer:
1, 2 & 3
Explanation:
. A chemist investigates the boiling point, melting point, and flammability
of a compound called acetone, a component of nail polish remover.
Which of these properties are physical properties and which are
chemical properties?
Physical ( boiling point and melting point ).
Chemical ( flammability )
Among the properties listed (melting point, flammability, and boiling point), only the flammability of acetone is a chemical property. The other properties (melting point and boiling point) are physical properties since they are associated with changes in state .
The correct option is 1 .
The melting point of a substance is the temperature at which it changes from a solid to a liquid state. This is a physical property because it does not involve a change in the chemical composition of the substance. However, acetone is a liquid at room temperature, and therefore, it does not have a well-defined melting point. It would vaporize (evaporate) instead of melting.
Flammability is a chemical property. It refers to the ability of a substance to undergo combustion when exposed to a flame or ignition source. It involves a chemical reaction, as the substance interacts with oxygen to produce heat and light.
The boiling point of a substance is the temperature at which it changes from a liquid to a gas state. This is a physical property, similar to the melting point, as it does not involve a change in the chemical composition of the substance.
Hence , 1 is the correct option
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Slove this fill in blanks
Answer:
1) Heterogeneous mixture
2). homogeneous mixture
3) water is solvent and sugar is solute
4). sublimation process
heterogeneous
homogeneous
sugar is solvent and water is solute
???
Page : Date: What do you mean by a symbol ? What are the bases of making symbols?
Answer:
Hi, There! your Answers are Below And Are 100% Correct
Symbols are the basis of culture. A symbol is an object, word, or action that stands for something else with no natural relationship that is culturally defined
Explanation: The Answer to your Other Question Is In the Pic :)
(Dont forget to mark thanks)
Differentiate endothermic and exothermic reaction
Answer:
A popular example of an endothermic chemical reaction is photosynthesis.
...
Exothermic Reactions.
Endothermic Reaction Exothermic Reaction
The energy is absorbed from the surrounding into the reaction The energy is released from the system to its environment.
Energy in the form of heat Energy is released as heat, electricity, light or sound.
Explanation:
Exothermic reactions transfer energy to the surroundings. ... The reaction that does the complete opposite (it absorbs heat) is an endothermic reaction. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become hotter.
Which of the following is not a magnetic material A cobalt B iron C nickel D plastic E steel
Answer:
D. plastic[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]
A scientific theory _______.
a.
describes what occurs every time in a given situation
b.
is not validated by experimentation
c.
can never be changed
d.
is an explanation for a set of events
Please select the best answer from the choices provided
Answer:
D! I had this question for a test last year :)
Answer:
b
Explanation:
it is experimental and can be changed
PLS HELP ME
The moon is 2.39 • 10^5 miles from the earth. The
average man is 6 feet tall. How many men would have
to stand on top of one another to reach from the earth
to the moon? (there are 5,280 feet in a mile. How many
miles is 6 feet?)
Number of men required to stand on top of each other to reach moon from earth are :
[tex] \boxed{ \boxed{ \: \: \: \: \: \: \: 210320000 \: \: \: \: \: \: \: }}[/tex]
Which of the following statements best describes why burning
a match would be considered a chemical reaction?
a The match gets consumed by the fire.
b Burning a match forms new substances.
c Burning a match is dangerous.
d Burning a match is not a chemical reaction.
Answer:
I would say B
Explanation:
well the other options are wrong
Burning a match would be considered a chemical change because it forms new substances.
WHAT IS A CHEMICAL CHANGE:
A chemical change is a change that involves the chemical components of the substance involved leading to the formation of new substances. This is opposed to a physical change, which only involves a transformation of state. Examples of chemical changes include rusting, burning a match etc.Burning a match is an example of chemical change because it involves the formation of new substances such as ash, smoke etc from wood (match stick).Learn more: https://brainly.com/question/23693316?referrer=searchResults
Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a
liquid?
There is no change in the kinetic energy of the molecules.
The kinetic energy of the molecules increases.
The kinetic energy of the molecules decreases.
The kinetic energy of the molecules increases then decreases.
hi <3
i would say the kinetic energy decreases (so option C), as liquid particles are more closely packed than in a gas
hope this helps <3
2. Name 3 elements that are found in the same period.
3. Identify each of the following
a. Metal:
I
b. Nonmetal:
c. Metalloid:
d. Alkali Metal:
e Halogen:
f Noble Gas:
The volume (V) of an enclosed mass of gas is 350kPa. The pressure of the endlosed gas is now decreased to 125kPa, at constant temperature. What will the new volume of the gas be, in terms of V (2)
Answer: V1/V2 = 0.357,
V2 = (V1/0.357) or 28.0*V2
Explanation: Use the combined gas law: P1V1/T1 = P2V2/T2 We want to find V1/2 (or V2/V1). Rearrange:
V1/V2 = (P2/P1)(T1/T2)
The units all cancel. Temerature is constant, so (T1/T2) = 1.
V1/V2 = (125/350)*(1)
V1/V2 = 0.357
Electricity is the flow of...
A. Neutrons
B. Electrons
C. Protons
D. Positrons
Answer:
B. Electrons.
....Hope it helps you....Answer:
B. Electrons
Explanation:
Electrons are held in their shells by an electrical force, so it has to be Electrons.
hope i helped
