How many molecules are in 10 moles of H2
The number of molecules in one mole of hydrogen gas is 6.02 × 10²³ . The number of molecules in 10 moles of hydrogen gas is then 6.022 ×10²⁴.
What is one mole?Any substance that contains 6.022 × 10²³ number of atoms is called ne mole of that substance. This number is called Avogadro number. Hence, one mole of every elements contains Avogadro number of atoms.
Hydrogen is the first element in periodic table. It is an alkali metal. The number of molecules in one mole of H₂ is equal to Avogadro number. Mass of a molecule with one mole of amount is called its molecular mass.
Number of molecules of H₂ in one mole = 6.02 × 10²³
Then number of molecules in 10 moles is Avogadro number times the number of moles.
= 10 × 6.022 × 10²³ = 6.022 ×10²⁴ molecules
Therefore, 10 moles of H₂ contains 6.022 ×10²⁴molecules..
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1. Multiple Choice
How does altitude affect climate?
A.
The higher the altitude, the colder the climate will be.
B.
The lower the altitude, the colder the climate will be.
C.
The higher the altitude, the hotter the climate will be.****
D. Altitude is not related to climate.
2. How does latitude affect climate?
A.
Areas near the equator have cooler climates than areas far from the equator.
B.
Areas near the equator have warmer climates than areas far from the equator.
C.
Areas near the equator have four seasons.****
D.
Areas near the equator do not have any type of precipitation.
3. How does wind affect precipitation?
A.
Wind does not have any effect on precipitation.
B.
Winds that blow from over the land contain a lot of water vapor that will cause precipitation.****
C.
Winds that blow inland from oceans or large lakes contain very little water vapor that will cause precipitation.
D. Winds that blow inland from oceans or large lakes contain a lot of water vapor that will cause precipitation.
4. Sea and land breezes over a large region that change direction with the seasons are called
A.
windward.
B.
leeward.
C.
monsoons.****
D. storms.
(****= my answer)
plz cheak my answers!?
Answer:
#1 A
#2 B
#3 C
#4 c
Explanation:
#1 can give reference to a mountain the higher the altitude the colder it will get
#2 talking about climate not seasons per say. focus on climate answers
#3 wind carry moisture from the sea on to land which cause precipitation
#4 Monsoons is correct
Element X has three electrons in its outermost orbit.
Element Y has seven electrons in its outermost orbit.
What is the chemical formula of the ionic compound
formed by these elements when they react together?
(Use X and Y as the chemical symbols.)
PLEASE SOMEONE EXPLAIN THIS IN DETAIL
Explanation:
element x _ carbon having two shells 2,3
element y _ fluorine atomic no 9 EC 2,7
when carbon react with fluorine it destroyes graphite and form fluorocarbons and thus form covalent bond
hope it helps u
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas
Explanation:
an ideal gas moves in constant, rapid motion
If the Earth could no longer sustain human life, where could we go?
Answer:
There is no place in the solar system that can sustain humans except earth. Earth is the only planet that can sustain humans according to what we know and according to the technologies we have. We can live in Mars but the environment might not be suitable for growing vegetation and it might be hard for humans to live in Mars.
Explanation:
Hope this helped!
Please help
How do Newton's lawd describe the motion of an object?
which part of the plant you think is the least important?
Answer:
Well maybe the pedals they don't help much
Explanation:
Answer:
brainliest please
Explanation:
the pollen probably because other plants have it
7. Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its
average atomic mass is 12.01 because
A. carbon-12 is the heaviest isotope.
B. carbon-12 is most useful to humans.
C. carbon-12 is the most common isotope.
Answer:
B
Explanation:
carbon 12 is most useful to humans
acid+base->salt+water
What type of reaction is this?
Answer:
The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water.
Answer:
Neutralization reaction
Explanation:
Neutralization reaction it the reaction of acids and bases that form salt and water
hope it's helpful ❤❤❤❤
THANK YOU.
What types of inputs and outputs do these cell systems share
Answer:
The inputs of cellular respiration are glucose and oxygen. The outputs of cellular respiration are water, carbon dioxide
The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
What is a cell ?The smallest unit that can sustain life on its own and makes up all living things, including the body's tissues. The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell. The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.
The cell membrane, the nucleus, and the cytoplasm are the three components that make up a cell. Intricate arrangements of microscopic fibers and hundreds or even thousands of tiny, unique structures known as organelles can be found in the cytoplasm.
The system's inputs are the signals or data it receives, and its outputs are the signals or data it sends. As part of an activity, the phrase can also be employed; for example, to "perform I/O" is to carry out an input or output operation.
Thus, The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
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if you add 5 protons, 4 neutrons, and 3 electrons what is the net charge of the atom
Does anyone know this?
Answer:
Not balanced. There are different number of atoms on each side of equation.
Explanation:
Given balanced chemical equation:
Chemical equation:
3C₂H₄ + 3O₂ → 4CO₂ + 6H₂O
The equation is not balanced because umber of moles of C, H and O are not balanced. It consist of six moles of C, 12 moles of H and six moles of oxygen on left side of equation while on right side there are 4 moles of C fourteen moles of oxygen and twelve moles of hydrogen present.
Balanced chemical equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
Now the equation became balanced. There are two moles of carbon, four moles of hydrogen and six moles of oxygen are present on both side of equation.
which type of cell is shown in the diagram - a plant cell, a yeast cell or a bacterial cell
Answer:
bacterial cell plant cells dont have a tail
Explanation:
The type of cell shown in the diagram is the bacterial cell as plant cell do not have tails while bacteria have tail.
Bacteria are prokaryotic unicellular organisms. They have a relatively simple cell structure compared to eukaryotic cells. They also do not possess any membrane-bound organelles such as a nucleus. However, do they possess genetic material (DNA or RNA) in the intracellular space called the nucleoid.
Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes. Prokaryotes are the dominant living creatures on Earth, having been present for perhaps three-quarters of Earth history and having adapted to almost all available ecological habitats.
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can the element calcium be found in more than one state of matter?
Answer:
No
Explanation:
The element calcium be found in more than one state of matter ( Only in Solid state )
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Explain whether smoke filling up a room is diffusion or not.
Answer:
It is diffusion
Explanation:
Diffusion occurs when particles move from relatively high concentration to relatively low
Answer:
it is diffusion
Explanation:
smoke rises from one corner of the room and spreads to the rest of the room, resulting in diffusion
What does the difference in force depend on?
bro needs help
32.5 grams of NaOH reacts with an excess of CO2
2NaOH(s) + CO2(g) ⇒ Na2CO3(s) + H20
What is the theoretical yield of Na2CO3 in grams?
*** I NEED YOU TO SHOW YOUR WORK BROS, I ALREADY HAVE THE ANSWER (43.1g) ***
The half-life of cobalt-69 is 6 years. How much of a 5-gram sample is left after 12 years
Answer:
that was wrong my bad. just delete my answer
Explanation:
How many moles of solute are in 250 mL of 2.0 M CaCl2? How many grams of CaCl2 is
this?
Answer:The solution contains 0.50 mol or 55 g of CaCl2 . You know there are 2.0 mol of CaCl2 in 1 L of solution. (40.08 + 2 × 35.45) g=(40.08 + 70.90)
g=110.98 g
Explanation:
My I please have brainliest
110.98 grams of CaCl₂ is there present in 2.0 M CaC₂.
What is calcium chloride?Calcium chloride is made up of calcium and chloride.
Given, that the solution contain 250 mL of 2.0 M CaCl2
You know there are 2.0 mol of CaCl2 in 1 L of solution.
(40.08 + 2 × 35.45) g
= (40.08 + 70.90)
=110.98 g
Thus, 110.98 grams of CaCl₂ is there present in 2.0 M CaC₂.
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How many atoms are in 4.3 moles of lithium?
18. How is the kinetic energy of molecules changing when the molecules move faster?
The kinetic energy ...
a
is not changing
b
depends on the molecules.
С
is decreasing.'
d
is increasing
Scroll for more
Answer:
d
Explanation:
the more movement the more energy
If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond is holding the compound together?
The bond type in the substance is ionic bonding because, ionic compounds in their solid state are not conducting but the ions they furnish when dissolved in water conducts electricity.
What are ionic compounds ?Ionic compounds are formed between metals and nonmetals. Metals are electropositive and they can easily loss electrons to from cations. Metals donate electrons to the electron deficient non metals to achieve octet.
Ionic bonding is a strong electrostatic force between opposite charged ions. Hence this bond is stronger than other types of bond. This intact bonding make them bad conductors in the solid state.
However they are electrically conducting the molten state or when dissolved in water due to the presence of free ions and electrons in the solution.
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I need help with this question
Answer: atomic nucleus
Explanation:
In an exothermic reaction, chemical energy is converted to
1.thermal
2. mechanical
Answer:
thermal, I'm not 100% sure though.
There have been made 2 attempts of oxygen production by potassium permanganate.In the first attempt they have got 75ml oxygen in 3 minutes whearas there have been got 100ml in 5 minutes by the 2nd attempt.In what case the speed of the oxygen production is bigger???
Pls explain your answer
Answer:
The speed of oxygen production is bigger in the first attempt.
Explanation:
In the first attempt, since 75ml oxygen is produced in 3 minutes, the rate of oxygen production is r = volume of oxygen/time = 75 ml/3 min = 25 ml//min
In the second attempt, since 100ml oxygen is produced in 5 minutes, the rate of oxygen production is r' = volume of oxygen/time = 100 ml/5 min = 20 ml//min
Since r = 25 ml/min > r' = 20 ml/min, the speed of oxygen production is bigger in the first attempt.
CAN SOMEONE HELP I WILL GIVE BRAINLIST PLEASE!
Answer:
water, wind, ice, gravity
Explanation:
Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75. Assume Ideal behavior P°ethanol35=100torr P°propanol35=36torr
The vapor pressure (in torr) of a 35°C solution : 52 torr
Further explanationGiven
x propanol = 0.75
P°ethanol=100 torr
P°propanol=36 torr
Required
the vapor pressure
Solution
Raoult's Law
P solution = xA.P°A +xB.P°B
x ethanol = 1- 0.75 = 0.25
Input the value :
P solution = 0.25 x 100 + 0.75 x 36
P solution = 25 + 27
P solution = 52 torr
7. True or false. Where air masses collide, weather changes
Answer:true
Explanation:
How many moles of NaCl are in 2.35 liters of a 4.67 M solution?
There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;no. of moles = volume × molarity
According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:no of moles = 2.35L × 4.67M
no of moles = 10.97mol
Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
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Which type of force is the magnet using to move the nail?
A nail moving towards a magnet
A) Friction
B) Gravity
C) Pull
D) Push
Answer:
a
Explanation:
Answer:
Explanation:
gravity