Explanation:
it contains 6.02*1023atoms
Atom, the smallest unit of material which may be separated without releasing electrically charged. It is also the smallest unit of mass with the properties of a chemical element.
Avogadro's number is [tex]\bold{6.022\times 10^{23}}[/tex], which is the number of units in one mole of any material.Calculating of atoms are in 1.75 moles of neon:[tex]\to \bold{ 1.75 \times 6.022\times 10^{23}}\\\\\to \bold{ 10.5385 \times 10^{23}}\\\\[/tex]
Therefore, the answer is "[tex]10.5385 \times 10^{23}[/tex]".
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Linda is learning how to bowl and
wants to increase the acceleration of
the bowling ball when she throws it.
Which of the following best explains
one way that Linda could increase the
acceleration of the bowling ball?
A Throw the ball with greater force
B Throw the ball in a straighter line
C Throw a ball that has greater mass
D Throw the ball with her other
hand
Given the speed of light as 3.0 ✕ 108 m/s, calculate the wavelength of the electromagnetic radiation whose frequency is 6.700 ✕ 1012 Hz.
Answer:
Wavelength = [tex]4.48*10^{-5}m[/tex]
Explanation:
Given the following data;
Speed of light, V = 3 * 10^{8}m/s
Frequency, F = 6.700 * 10^{12}Hz.
To find the wavelength
We know that that the speed of light is given by the formula;
[tex] Speed of light, V = wavelength * frequency [/tex]
Making wavelength the subject of formula, we have;
[tex] Wavelength = \frac {speed \; of \; light}{frequency} [/tex]
Substituting into the equation, we have;
[tex] Wavelength = \frac {3 *10^{8}}{6.700 ✕ 10^{12}} [/tex]
Simplifying the equation, we have;
Wavelength = 4.48*10^{-5} m
Therefore, the wavelength of the electromagnetic radiation is [tex]4.48*10^{-5} meters[/tex]
HELP ASAP WILL MARK BRAINLIEST
Answer:
Its C
Explanation:
Which option identifies one section of the ocean floor
pls answer ASAP
Answer: neritic zone
Answer:neretic zone
Explanation:
why are metals are used to make jewellery
Answer:
They are highly lustrous metals which are resistant to corrosion. They are highly malleable and ductile so can be transformed into any shape or design.
Explanation:
Please help due in a few minutes
Answer:
Here is the opportunity for
ciaracrudup to have brainliest
since you need another answer
Explanation:
Calcium carbonate, CaCO3, decomposes when heated to
calcium oxide (Cao) and carbon dioxide (CO2). If 100 g of
calcium carbonate is allowed to decompose, 56 g of calcium
oxide is produced. What mass of carbon dioxide is produced
by the decomposition?
Answer:
Approx. 80.g
80
⋅
g
Explanation:
We need a stoichiometric reaction that represents the decomposition of calcium carbonate:
C
a
C
O
3
(
s
)
+
Δ
→
C
a
O
(
s
)
+
C
O
2
(
g
)
↑
⏐
And thus calcium oxide and calcium carbonate are present in equimolar amounts:
Moles of calcium oxide
=
44.5
⋅
g
56.08
⋅
g
⋅
m
o
l
−
1
=
0.794
⋅
m
o
l
.
Given the stoichiometry of the reaction, an equimolar quantity of calcium carbonate MUST have been present.
This represents a mass of
0.794
⋅
m
o
l
×
100.09
⋅
g
⋅
m
o
l
−
1
≅
80
⋅
g
In the decomposition reaction, what does the
Δ
symbol represent?
Explanation:
44 gm mass of carbon dioxide is produced by the decomposition.
What is meant by Decomposition reaction?
Chemical species disintegrate into more straightforward components during decomposition events. Energy input is typically required for decomposition reactions.
For instance, the thermal breakdown of potassium chlorate (KClO3) is a typical method for creating oxygen gas in laboratories.
Calculations:
CaCO3 → CO2 + CaO
depending on the conservation of mass
mass of the product = mass of the reactant
100 g = ( X + 56 )
mass of CO2 = 100 - 56
= 44 g
Thus, 44 gm mass of carbon dioxide is produced by the decomposition.
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The Law of Conservation of Energy states that Energy cannot be ____________ nor _____________ but only change from one __________ to another.
1. Changed, Charged, From
2. Energy, Not energy, Charge
3. Created, Destoryed, Form
4. Transformed, Created, Platform
(Quick answer please, also this is science)
A chromate ion consist of four oxygen atom bonded to be a chromium atom. It has two extra electrons. the formula for this
Answer:
Cr04^2-
Explanation:
which environment is characterized by high temperature and low humidity
A. Desert
B. mountain
C. rainforest
D. tundra
Answer:
Desert
Explanation:
Which metalloid has three valence electrons? boron arsenic silicon lithium
HElp PLEase
Answer:
Boron
Explanation:
First, locate the metalloids on the periodic table. (First picture) The metalloids are in the yellow section. Next, remember that the group your element is in determines its valence electrons. For example, group 17/7A has 7 valence electrons. Look at the group numbers above each column on the periodic table to find out which metalloid is the answer. In this case, we need to look at 13/3A since we know that this metalloid has three valence electrons. Not all periodic tables will be labeled with the 3A part, so remember that groups 13 and over have the amount of valence electrons after you take out the one in front. For example, group 16 has 6 valence electrons because I removed the one in front of it. Now your options should be limited down to boron because we know that it is in the yellow section in group 13.
Answer:
the answer is boron
Explanation:
got it right on edge
Two students are planning an investigation to determine if ionic or covalent bonds have stronger intermolecular forces. They are using salt (ionic), sugar (polar covalent), and moth balls (nonpolar covalent). Which property below would be the LEAST helpful in determining what bond type has the strongest intermolecular forces?
Flammability
Solubility in water
Conductivity in water
Melting Point
Answer:
conductivity in solid state/ in water
Explanation:
conducitvity in water state would be least helpful when trying to determine the bond type that has the strongest intermolecule force, becuase they (salt and water) both would dissolve in water the same.
The property that will be least helpful in the determination of the bond type that has the strongest intermolecular forces is C. Conductivity in water.
It should be noted that the students wanted to investigate whether ionic or covalent bonds have stronger intermolecular forces.
In order to carry out the investigation, salt, sugar, and molar balls are used. Based on this, the property that is required for the investigation will be flammability, solubility in water, and the melting point.
The conductivity in water isn't required.
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A scientist describes the molecules of a substance as it changes from one state of matter to another. She states that the speed of the molecules slows down over time. Which phase change could the scientist be describing?
A.gas to liquid
B.liquid to gas
C.solid to gas
D.solid to liquid
Answer:
A.
Explanation:
Particles in gas move very fast and quickly while particles in liquids are slow and closer together.
What is the advantage of seeds that can be spread over a wide area?
A. They are more likely to start growing.
B. They may have more competition.
C. They are more likely to develop useful mutations.
D. They may have less competition for resources.
Answer:
I'm fairly sure it's D
Explanation:
If they're more spread out than they're roots in theory should have more space. Sorry if I'm wrong
At a festival, spherical balloons with a radius of
110.cm
are to be inflated with hot air and released. The air at the festival will have a temperature of
25°C
and must be heated to
100°C
to make the balloons float.
3.00kg
of butane
C4H10
fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air.
Here are some data you may find useful:
Specific heat capacity of air:
1.009J·g°C
Density of air at
100°C
:
0.946kgm3
Density of butane at
100°C
:
1.898kgm3
Formation enthalpy of butane at
25°C
:
Actual answer please
YOU GET 55 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I am not afraid to report you and email a worker.
1) Name the type of energy we been discussing that is not found in the simulation.
2) Why doesn't the sun make the wheel move?
solve these to and you get picked brainlley
Answer:
there's no way to answer that
guess what 2nd language i can speak:
A1. german
B2. french
C3. Sarcasum
Answer:
B2 French I hope I'm right
Answer:
English
Explanation:
I mean u typing in English lol
An unknown gas has a volume of 20L at 140K. What is its volume at STP? Be sure to show the setup and the final
answer and unit.
Show Your Work
Answer:
v₂ = 39L
Explanation:
Given parameters:
Initial volume of gas = 20L
Initial temperature = 140K
Unknown:
Final volume = ?
Solution:
Since the standard temperature of any gas is 273K, the final temperature is this 273K;
Applying Charles's law:
[tex]\frac{v_{1} }{T_{1} }[/tex] = [tex]\frac{v_{2} }{T_{2} }[/tex]
v and T are volume and Temperature
[tex]\frac{20}{140}[/tex] = [tex]\frac{v_{2} }{273}[/tex]
v₂ x 140 = 20 x 273
v₂ = 39L
Anyone Help please??
a. 0.5 mol
b. 25 cm³
c. (i) 75 cm³
(ii) 50 cm³
Further explanationAvogadro's hypothesis:
In the same T,P and V, the gas contains the same number of molecules
So the ratio of gas volume will be equal to the ratio of gas moles
[tex]\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}[/tex]
Reaction
2NO(g)+O₂(g)⇒2NO₂(g)
a. mol O₂
[tex]\tt mol~O_2=\dfrac{1}{2}\times 1~mol~NO=0.5[/tex]
b. volume of O₂
[tex]\tt \dfrac{50}{1}=\dfrac{V_2}{0.5}\rightarrow V_2=25[/tex]
c. (i)total volume
[tex]\tt volume~NO+volume~O_2=50+25=75~cm^3[/tex]
(ii)volume of NO₂
[tex]\tt mol~NO_2=mol~NO=1\rightarrow V~NO=V~NO_2=50~cm^3[/tex]
An inherited behavior that helps an animal meet its needs
Answer:
the answer is adaptations
Explanation:
A body part or behavior that helps an animal meet its need in its environment is called an adaptation. All adaptions are inherited traits. Camouflage is an animal's color or pattern that help it blend in with its surroundings.
carbon dioxide and water vapor are variable gases because
Answer:
Their amount is not consistent at all parts of the atmosphere
Explanation:
Carbon dioxide and water vapor exists as variable gases in the atmosphere because their amount varies from one part to the other.
The abundance of variable gases is influenced strongly by activities from the surface. This variability occurs a result of the contribution from from life activities on the surface. Also, due to properties of the gases, they are not evenly distributed. At certain altitudes, the amount of water vapor can be low.Carbon dioxide and water vapor are variable gases because their amount is not consistent at all parts of the atmosphere.
Surface activities have a significant impact on the abundance of variable gases.This variation arises as a result of the input of surface life activities.They are also not uniformly dispersed due to the characteristics of the gases.Water vapor levels might be low at particular heights.Carbon dioxide and water vapor are variable gases because their amount is not consistent at all parts of the atmosphere.For more information:
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4. An object's resistance to any change in its motion is the ___ of the object. (1 point)
force
acceleration
inertia
Answer:
Acceleration
Explanation: Force is how much one thing is being applied so it is not that and inertia is something sitting still so therefore using process of elimination, it is acceleration.
Answer: B. Acceleration
Explanation:
Which reaction below is a physical change?
a. CH4(g) + 2O2(g) → CO2(g) + 2HsO(l)
B.CaO(s) + H2O(l)→ Ca(OH)2(s)
c. H2O (l) → H2O(s)
d. 2HsO (l) → 2H2(g) + O2(l)
Answer:
c. H20 (L) ->H20 (S)
Explanation:
its just water freezing lol
pls vote brainliest tho ❤❤
Please help im almost out of time ill mark BRAINLIESTTT
Answer:
The first one is actually Location D
The second one is Location B
I can't read all of the 3rd one, but if it says winter, its B, if it says summer its D
Explanation:
What is the atmosphere?
Answer:
atmosphere is the mixture of gases that surrounds the Earth.
What can you do to help reduce Acid Rain? List 5 ways.
Help me yall!! Imao
Answer:
- to produce energy without using fossil fuels instead using renewable sources solar and wind power.
- reduce the amount of sulfur dioxide released from coal-burning power plants. One option is to use coal that contains less sulfur.
- install equipment called scrubbers, which remove the sulfur dioxide from gases leaving the smokestack.
- While one car alone does not produce much pollution, all the cars on the road added together create lots of pollution. Therefore, car manufacturers are required to reduce the amount of nitrogen oxides and other pollutants released by new cars. One type of technology used in cars is called a catalytic converter. This piece of equipment has been used for over 20 years to reduce the amount of nitrogen oxides released by cars.
- recycling is one way that is often use less energy than producing a new products from raw materials so the use of energy that obtain mainly from fossil fuel will be reduced and that reduced the emissions of toxic gases.
Decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.
What is acid rain?Acid rain, also known as acid precipitation and acid deposition, is a type of precipitation with a pH of 5.2 or below that results from the release of nitrogen oxides and sulphur dioxide (SO2) from human activities, primarily the burning of fossil fuels. Acid deposition can impair biodiversity and lower the pH for surface waters in acid-sensitive areas.
To reduce acid Rain following steps can be taken: Generate energy using renewable resources like solar and wind energy rather than fossil fuels. Decrease the amount of sulphur dioxide power plants that burn coal emit. Using less sulfuric coal is one option. Install machinery known as scrubbers to take sulphur dioxide out of smokestack gas emissions. New automobiles must emit fewer nitrogen oxides as well as other pollutants, according to regulations for automakers. One method that frequently uses less energy than creating new items from basic materials is recycling.
Therefore, decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.
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Which statement correctly describes a reaction in dynamic equilibrium? At dynamic equilibrium, the reactions stop and the amounts of reactants and products do not change. At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change. At dynamic equilibrium, the reactions stop but the amounts of reactants and products are changing. At dynamic equilibrium, the reactions continue and the amounts of reactants and products are changing.
Answer:
At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change.
Explanation:
At dynamic equilibrium, the reactions continue but according to the law of conservation of mass, the amounts of reactants and products don't change.
At dynamic equilibrium, the reactions takes place, however, the amount of reactants and products do not change.
• Dynamic equilibrium prevails once a reversible reaction takes place.
• In this the transition of the substances between the reactants and products takes place at equivalent rates, thus, there is no net change.
• The formation of products and reactants takes place at such a rate that the concentration of both stays the same.
• It is an illustration of a system in steady state, like in a closed system when reactions do take place, however, at such a rate that the composition of the mixture does not varies with time.
Thus, the statement, that is, at dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change is relevant.
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What happens when the oppositely charged ions are brought close together?
WILL GIVE LOTS OF POOIINNTTSSS PLEEAASSEE IMMM CRYINNNNNN
Explain specific heat in your OWN words. (2pts) Explain the equation. (1pt) Give an example of your understanding of the concept that we encounter on a daily basis. (3 pts.)
Answer: The specific heat is the amount of heat per unit mass that is essential for raising the temperature of heat by one degree Celsius. Equation is the symbolic reaction of a chemical reaction in the form of symbols and formulas, where the reactant is written on the left side and the product is written on the right side.
We encounter a lot of things in our daily life that we love and also hate. What I have faced a lot is my nail tags that happens to me a lot and hurts too. And I love dipping biscuits in tea and that never happens at once because a single biscuit is too big for the cup. Hence, I have to break it and dip. Ugh
