Answer:
1. When electric voltage is applied, an electric field within the metal triggers the movement of the electrons, making them shift from one end to another end of the conductor. Electrons will move toward the positive side.
2. Well, if you think about it logically, the Heisenberg Uncertainty Principle basically means that it's impossible to predict both exactly what the electron will do or exactly where the electron will be found. In other words, when you know where the electron is going, you don't know where it is.
Pls answer my question to the best of your ability down the bottom of yours. Thankyou! :)
What is the relationship between specific heat and the rate of heating?
Answer:
the rate of heat transfer is directly proportional to the mass flow rate.
Explanation:
There is an elementary equation from basic thermodynamics that states that the rate of heat transfer (Q) equals the mass flow rate (M) times a Constant (the specific heat of water) times the Delta T (fluid temp out minus fluid temp in): Q = M x C x Delta T In other words, the rate of heat transfer is directly proportional to the mass flow rate.
How did Wegener use fossils as evidence that continents had moved?
Answer: Because the same Fossils were found on other continents.
Explanation:
The world used to be connected but then what I call the Continental Drift started and the world broke apart, along with the dinosaurs splitting in two or more packs.
What conversion factors
determine the number of
molecules from the number of
moles of a compound?
Answer: Avogrado's number, or 6.022 x 10^23
Explanation:
To convert from moles to atoms, multiply the molar amount by Avogadro's number. To convert from atoms to moles, divide the atom amount by Avogadro's number (or multiply by its reciprocal).
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What is meant by the dual wave-particle nature of light?
Dual wave particle nature of light can be regarded as mechanism that says light and matter will also has the properties of waves as well as that of particles.
This concept is found in mechanics as it describes how light and matter also has the properties associated with waves as well as particles.The duality explained inadequacy of conventional concepts of both wave and particle so as to give explanation about behaviour of quantum objects.the dual nature of light made us to understand that light has wave properties and it also has particle properties.Some of the properties of wave that light has are:
wavelengthspeedTherefore, duality means have both characteristics of light and wave
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Why do rappers need umbrellas?
Maybe to not get rained on.
Hahhahahaha I ain't sure tho
Answer:
Fo' drizzle.
Explanation:
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Tritium (H-3) is a radioactive isotope of hydrogen with a half-life of 12.3 years. How long would it take for a 40.0g sample to decay down to 1.25g
Answer:
the answer maybe is 61.5 years (please check with others) tq
Explanation:
40/2=20
20/2=10
10/2=5
5/2=2.5
2.5/2=1.25
so one half life is 12.3 years
then 12.3 ×5 =61 .5
(why 5 ? because it decay 5 times to get 1.25 from 20)
2KClO3 → 2KCl + 3O2
How many moles of KClO3would it take to make 6.0 moles of O2?
a) 1.5
b) 9.0
c) 2.0
d) 4.0
God is GOOD AND arr you sure that is written properly
What force pulled the solar system together out of a cloud of gas and dust
A student bought a 1.55-ounce chocolate bar and left it in a car on a hot day.
How many ounces of chocolate are in the melted bar?

A.
Exactly 1.55 ounces

B.
An unknown number of ounces

C.
At least 1.55 ounces

D.
Less than 1.55 ounces
Answer:
A. Exactly 1.55 ounces
Answer this please if you do i will give you brainilset if you get it correct
Answer:
D
Explanation:
Please help If You Are Able To. Where do these go?
Answer:
Sorry can't help
Explanation:
Cant help!
how many grams of sodium carbonate must react with 222 g of calcium chloride to make 233 grams of sodium chloride and 201 grams of calcium carbonate?
Answer: 212 g of sodium carbonate must react
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.
In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.
The balanced chemical equation is:
[tex]Na_2CO_3+CaCl_2\rightarrow 2NaCl+CaCO_3[/tex]
Mass of products = mass of sodium chloride + mass of calcium carbonate = 233 g+ 201 g= 434 g
Mass of reactants= mass of sodium carbonate + mass of calcium chloride =x + 222 g
As the mass of reactants should be equal to mass of products
434 = x + 222 g
x = 212 g
Thus 212 g of sodium carbonate must react with 222 g of calcium chloride to make 233 grams of sodium chloride and 201 grams of calcium carbonate
2. If temperature
increases/decreases, then air pressure will
increase/decrease.
Answer:
true
Explanation:
the mass of the temperature changes as well so it'll decrease and increase
How many grams of MgO are in 3.500 moles?
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, lead has the highest mass. 141.05gram of MgO are in 3.500 moles.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. 141.05gram is the mass of MgO.
Mathematically, the molar mass, mole and given mass can be related as
Mole of MgO =given mass of MgO ÷ molar mass of MgO
Molar mass of MgO= 40.30 g/mol
Mole of MgO= 3.500 moles
substituting the values, we get
3.500 moles = mass of MgO÷ 40.30 g/mol
Mass of MgO=141.05gram
Therefore, 141.05gram of MgO are in 3.500 moles.
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I don't really understand this worksheet question.
Miley partridge if you see this I am CJ and these hearts are for you ❤❤❤❤❤❤
Answer: not to be rude but who is Miley partridge? If she is a friend then u r a kind hearted person
Explanation:
The contents of a bucket filled from a well were in a ____ stat. If the contents were heated up enough, they would change to a ____ state.
Answer: liquid state
A gas state
Explanation:
Calculate the new pressure if a 2300 mL of a gas at a pressure of 1.88 atm is allowed to contract to a volume of 2.21 L.
Answer:
V₂ = 0.958 atm
Explanation:
Given data:
Initial volume = 2300 mL (2300/1000 = 2.3 L)
Initial pressure = 1.88 atm
Final volume = (2.21 L + 2.3L) = 4.51 L
Final pressure = ?
Solution;
The given problem will be solved through the Boyle's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
1.88 atm × 2.3 L = P₂ × 4.51 L
V₂ = 1.88 atm × 2.3 L / 4.51 L
V₂ = 4.32 atm.L / 4.51 L
V₂ = 0.958 atm
Explain in a short sentence how you can tell a reaction is a decomposition reaction.
Answer: A decomposition reaction occurs when one reactant breaks down into two or more products.
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Which of the following halogens has the weakest attraction for electrons?
I
F
Br
Cl
Answer:
I
Explanation:
Among the halogens given in this problem, iodine has the lowest attraction for electrons.
This property is known as electronegativity.
Electronegativity is expressed as the relative tendency with which the atoms of the element attracts valence electrons in a chemical bond.
As you go down the periodic group the electronegativity decreases. The most electronegative element on the periodic table is fluorine. Down the group, iodine is the least electronegativeThis is due to the large size of its atom.
What is one effect of the uneven heating of Earth caused by the Sun? (Answer with a 5 sentence paragraph)
ene
(This is scinece
Answer:
Albedo
Explanation:
Usually when we talk about uneven heating of the Earth's surface we are discussing convection. The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and can cause thunderstorms and other violent weather. The cause of this is the reflectiveness of the surface of the Earth at that point (the albedo) and the angle that the sun's rays strike it at. A field covered with snow and ice is going to be much more reflective than a black top asphalt parking lot. As such the parking lot absorbs much more shortwave radiation from the sun and gets much warmer.
The uneven heating of Earth caused by the Sun craetes the difference in the atmosphere pressure and the volume of gasses present in atmosphere.
What is uneven heating of Earth?The uneven heating in the atmosphere disturbs the climatic conditions as there are some areas which are cold and some are hot then before and also changes the volume and pressure.
The change in the volume and the pressure results in the flow of the upward flow of the current air which is the main cause of thunder storm and some other climatic disaster can also happen.
Therefore, uneven heating of Earth caused by the Sun craetes the difference in the atmosphere pressure and the volume of gasses present in atmosphere.
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Clouds, precipitation, and _____ occur at frontal boundaries
Answer:
Hi! I think it's storms.
Answer:
I think evaporation
Explanation:
because clouds and precipitation are listed i am not entirely sure if I were u i would double check
Do your answers to the previous questions satisfy
the following statements?
A) The dependent variable is changed by the
independent variable.
B) The independent variable causes a change
to another variable.
C) The independent variable is not changed by
another variable.
Answer:
I put B&C
Explanation:
which are exmaples of chemical change?
•baking cookies
• The statue of liberty's metal tarnishes from copper to green
• cold butter melts into liquid when heated
•salt is dissolved into freshwater
•Food scraps decompose into fertilizer in a compost pile
• frying changes the color and texture of an egg
•ocean water evaporates to water vapor on a hot day
•lighting a match
Answer:
cold butter melted when heated, lighting a match, baking cookies,
Explanation:
pls helpppp
Is the law of conservation of mass observed in each equation?
1. 2KClO3=2KCl+3O2
2. CaCO3+2HCl=CaCl2+H2O+CO2
Answer:
its c my guy
Explanation:
Convert 4.5 x 10-3 to standard Notation
Posted today at 6:30 am
1
=
Answer:
0.0045
Explanation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
for example 4.5×10⁻³
In standard notation
4.5 / 10³
0.0045
The expanded notation is standard notation of writing the numerical values which is normal way. The numbers are written as they are, without the power of 10.
On the periodic table, all of the elements in Group 1 are ____________
a) considered pure.
b) do not form chemical bonds.
c) have the same number of valence electrons.
The model represents a fluorine (F) atom
what is the mass of the atom
Answer:
19
Explanation:
The mass of an atom is given by its mass number. This is because the mass of an atom is concentrated at the nucleus.
Mass number = number of protons + number of neutrons
Protons and neutrons are the most massive particles in any atom.
Protons are the positively charged particles in an atom
Neutrons are uncharged particles.
So, the mass number of this atom is:
Mass number = 9 + 10 = 19
