It measure the number of elementary entities of a given substance that are present in a given sample. 1.99 moles of glucose are present in 1.2 x 10²⁴ molecules.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. The stoichiometry represents the number of moles. Mole is directly proportional to the number of given molecules.
Given number of atoms= 3.01x10²³atoms
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
mole of glucose =given number of molecules of glucose ÷ 6.022×10²³(Avogadro number)
Substituting the values, we get
mole of glucose= 1.2 x 10²⁴÷6.02 x 10²³
mole of glucose= 1.99 moles
Therefore, 1.99 moles of glucose are present in 1.2 x 10²⁴ molecules.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
14) For the reaction P4(s) + 6 Hz(9) — 4 PH3(g)
a) f 15 g of Pe were used, how many liters of PHs were produced?
b) How many liters of H2 are required to completely react with 15 g of P4?
c) How many grams of PHs will be produced if 6.0 L of H2 are used?
Molar Mass of P4: 1 mol P4 =
g
a)
L PH3
b)
L H2
Molar Mass of PH3: 1 mol PH3 =
9
c)
g PH3
Which element is a poor conductor of heat?
A. F
B.K.
C. Fe
D. Ag
Please help
How do Newton's lawd describe the motion of an object?
How many moles of Na2SO4 are present in 426.12 grams of Na2SO4? (5 points)
Group of answer choices
2
3
5
6
Answer: It’s 2.9 moles
Explanation:
Answer:
b) 3
Explanation:
i got it right
Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)
Answer:
The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.
Explanation:
Will these groups of elements form ionic or molecular compounds? sodium and Iodine 
Answer:
Ionic
Explanation:
Answer:
carbon and hydrogen are molecular
Explanation:
Oxygen-16 and Hydrogen-1 Are they becoming positively or negatively charged ions to gain stability?
they are becoming negatively charged.
PLEASE HELP ME RNNNN!!! A specific characteristic, such as blue eyes, is known as a *
Answer:
A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype.
Explanation:
if not then its a feature,
PLEASE HELP ME!! CHEMISTRY
139. How many formula units are present in 500.0 g of lead (II) chloride?
Answer:
(500.0 g PbCl2) / (278.1164 g PbCl2/mol) × (6.022 × 10^23 f.u./mol) =
1.083 × 10^24 formula units
Explanation:
Help please!! I'll name you brainliest!!
Answer:
magesium di chloride
Explanation:
it has one magnesium and 2 chlorines
Answer:
Magnesium Chloride
WILL GIBE BRAINLIEST!!!!!! Think research, and discuss: As you move across a period, you will recall that
the radius decreases. Why do you think a decrease in atomic radius would
result in a greater ionization energy?
(5 Points)
The effective nuclear charge is increasing due to less distance between protons and
neutrons.
O
The effective nuclear charge is increasing due to less distance between protons and
electrons.
The effective nuclear charge is decreasing due to less distance between protons
and neutrons.
The effective nuclear charge is decreasing due to less distance between protons
and electrons.
why do plants provide animals with fruit such as strawberries, apples, and mangoes
Answer:
to increase their number of species on the Earth and want to go long and long
Which formula represents a
polar molecule
containing polar covalent bonds?
A. H2O
B. CO2
C. NaCL
D. Cl2
Answer:
A. H2O
Explanation:
Let us first define the three types of bonds:
1. Nonpolar Covalent: electronegativity difference < 0.4
2. Polar Covalent: electronegativity difference between 0.4 and 1.8
3. Ionic: electronegativity difference > 1.8
This will help us eliminate choices C and D:
-NaCl has a electronegativity difference of 3.0 - 0.9 = 2.1 (ionic bond)
-Cl2 has a electronegativity difference of 3.0 - 3.0 = 0 (nonpolar covalent bond)
However, we still have two more options, A and B, but they are not diatomic for us to use the electronegativity differences with.
We must now consult their geometries. Because CO2 has a linear geometry (O=C=O), the two sides will cancel each other out, resulting in a nonpolar covalent bond. At this point, by process of elimination, we can already determine the answer to be A. H2O. We can verify this by looking at the geometry of H2O, which is bent (H-O-H; imagine the O is above the H's, I cannot draw it in this response). H2O's bent geometry classifies it as polar covalent; the electrons are slightly more attracted towards the O, the more electronegative element. Side note: this makes the O slightly more negative in charge, whilst the H's are slightly more positive in charge.
P.S. I apologize for not being able to draw and demonstrate that last paragraph, but I hope you get a general idea. You can search up the "H2O geometry" and "CO2 geometry" to get a better idea! :)
H₂O represents a nonpolar molecule containing polar covalent bonds. Hence Option (A) is correct
What is Polar Covalent Bond ?A polar covalent bond exists when atoms with different electronegativities share electrons in a covalent bond.
Consider the hydrogen chloride (HCl) molecule. Each atom in HCl requires one more electron to form an inert gas electron configuration.
Water (H₂O), like hydrogen Chloride (HCl), is a polar covalent molecule. When we look at a diagram of water , we can see that the two hydrogen atoms are not evenly distributed around the oxygen atom
Water (H₂O) is polar because of the bent shape of the molecule. The shape means most of the negative charge from the oxygen on side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule.Thus, This is an example of polar covalent chemical bonding.
Therefore, H₂O represents a nonpolar molecule containing polar covalent bonds. Hence Option (A) is correct
Learn more about bonding here :
brainly.com/question/1603987
#SPJ2
im hella confused and need some help
ASAP PLEASEEEE
Draw a graph of how kinetic energy & temperature are related
(LOOK AT THE PICTURE ATTACHED)
Answer:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
Explanation:
Answer:
jayfeather the answerer friend me
Explanation:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
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
Please help me ASAP
The chemical compound, "AB" has a molar mass of 74.548 g/mol.
What is the percent by mass of B in AB? (Mass of A = 39.098 g/mol,
B = 35.45 g/mol)
Answer:
47.55%
Explanation:
Why is biodiversity very important?
Answer: Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.
Explanation:
Please help (: List and describe the locations and conditions in the Four zones of a lake
Explanation:
littoral horizantal raw curated
is cellphone is made from renewable resources * true or false
Answer:
T
Explanation:
What element is added to copper to make bronze? Why is this important for making bells?
Answer:
The correct answer is - tin.
Explanation:
Tin is the element that is mixed with copper to make bronze as bronze has many unique properties such as crisp sound quality and hardness. The hardness of the bronze allows them to make a good quality sound is come by adding tin to copper restricts the free flow of electrons of the copper atoms.
The pure metals have molecules present in an orderly manner and allow the electrons to free flow. This is why bell makers use bronze as it does not allow electrons to move freely which makes it hard and makes a good sound.
N2 + 3H2 → 2NH3
How many moles of NH3 could you make with 4.2021 g of N2?
I need this like rn pls .
Moles of NH3 = 0.3 moles
Further explanationGivenN2 + 3H2 → 2NH3
4.2021 g of N2
Required
moles of NH3
Solution
mol N2 :
= 4.2021 g : 28 g/mol
= 0.15
From the equation, mol NH3 :
= 2/1 x mol N2
= 2/1 x 0.15
= 0.3 moles
What do scientists think is responsible for this dramatic change in height? Cite evidence from the text to support your answer.
Answer:
Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
Explanation:
i might be right
What forms the individual characteristics on a bullet?
Answer:
On bullets, the class characteristics are the rifling specifications of the barrel from which the bullet was fired. ... In a barrel, the individual characteristics are produced by the random imperfections and irregularities of the tool or tools used to produce the lands and grooves, and by use, corrosion, or damage.
Explanation:
What is the mole ratio of water (H20) to phosphoric acid (H3PO4)?
P.010 + H2O 4H3PO4
Before
After
Р
4
(4) - 4
4(4) - 16
O 10+1
H
2
3(4) - 12
1:1
46
6:4
2:2
Answer:
the answer to this problem is before
Explanation:
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!
A chemical formula is shown the subscription in a chemical formula represent the
Answer:
A, option is the correct answer of this question
Metals usually bend without breaking
while gems usually break in a specific pattern. What might be happening
to the bonds between the atoms in these materials that can explain this
difference?
We have that For a metal to metal metallic bond the atoms are arranged in a very compact manner ,This help for metals to move over each other in case of a bend.While gem atom don't same attribute.
From the question we are told
Metals usually bend without breaking
while gems usually break in a specific pattern. What might be happening
to the bonds between the atoms in these materials that can explain this
difference?
Generally
Metals are elements that form positive ionsMetals tend to engage in variant types of bondsFor a metal to metal metallic bond the atoms are arranged in a very compact manner This help for metals to move over each other in case of a bend.Hence, Metals don't break upon a bendGems, on the other hand break on impact be cause of the bonding between them.Most gems use an ionic bond for the bonding mechanism
For more information on this visit
https://brainly.com/question/1641336
Help please!!! How many grams are in 3.46 moles of Sulfur?
Answer:
The answer is: 78.04454 grams
Explanation:
Answer:
IHi the answer is 32.065 grams