Answer:
Each sample has the same number of molecules.
Explanation:
Just took the quiz on edge 2021
Taking into account the definition of Avogadro's number, each sample has the same number of molecules.
Avogadro's NumberAvogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole.
Avogadro's number applies to any substance.
This caseAvogadro's number applies to any substance. This means that the number of molecules in 1 mol of oxygen is equal to the number of molecules in 1 mol of nitrogen.
Finally, the correct answer is the third option: each sample has the same number of molecules.
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What elements are present NaAl(SO4) in one of the components of baking powder?
Answer:
1 Sodium, 1 Aluminum (1 Sulfur, 4 Oxygen)
Explanation:
hope that helps
Question in Pic. Please Help. Brainliest!
Answer:
i think its a
Explanation:
Which section of the ocean floor is near the coastline of all continents?
Answer shallow ocean
Explanation:
i think
I neeeeeeeeed help you within 30 min
Answer:
The answers to your question are given below
Explanation:
The equation for the reaction is given below:
2KClO₃ —> 2KCl + 3O₂
The total number of each atoms present in the reactants and products can be obtained by doing a head count as illustrated below:
Reactants >>>>>> Number of atoms
Potassium (K) >>> 2 × 1 = 2
Chlorine (Cl) >>>> 2 × 1 = 2
Oxygen (O) >>>>> 2 × 3 = 6
Products >>>>>>> Number of atoms
Potassium (K) >>> 2 × 1 = 2
Chlorine (Cl) >>>> 2 × 1 = 2
Oxygen (O) >>>>> 3 × 2 = 6
If a sample contains 22 moles of CsPO4, what is the mass of that sample?
Answer:
Mass = 5013.36 g
Explanation:
Given data:
Number of moles of CsPO₄ = 22 mol
Mass of sample = ?
Solution:
Formula:
Mass = number of moles × molar mass
Molar mass of CsPO₄ = 132.91×1 + 30.97×1 +16×4 = 227.88 g/mol
by putting values,
Mass = 22 mol × 227.88 g/mol
Mass = 5013.36 g
Sodium bicarbonate is the chemical name for baking soda.Its chemical formula is NaHCO3.What does the subscript 3 mean?
Answer:
3 moles of Oxygen
Explanation:
The chemical formula of a compound is a representation which shows all the elements therein and the mole relationship between them expressed as subscripts.
NaHCO₃ implies:
1 mole of baking soda contains:
1 mole of Na
1 mole of Hydrogen
1 mole of carbon
And 3 moles of Oxygen
Calculate the heat evolved kJ for the reaction of
1.00 g of elemental sulfur.
Answer: Calculate the heat evolved (per mo SO2) for the reaction of sulfur with oxygen to form SO . Calculate the heat evolved from a reaction mixture of 13.4L SO at 1 ATM and 273K ... N-2 (g) + Os (g) → 2 NO (g) H = +180.6 kJ.
Explanation: I hoped that was helpful!
CH4 + 202 → CO2 + 2H2O
How many moles of O2, needed to produce 36 grams of H20?
2.0 mol O₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[RxN - Balanced] CH₄ + 2O₂ → CO₂ + 2H₂O
[Given] 36 g H₂O
Step 2: Identify Conversions
[RxN] 2 mol H₂O → 2 mol O₂
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H₂O - 18.02 g/mol
Step 3: Stoichiometry
Set up: [tex]\displaystyle 36 \ g \ H_2O(\frac{1 \ mol \ H_2O}{18.02 \ g \ H_2O})(\frac{2 \ mol \ O_2}{2 \ mol \ H_2O})[/tex]Divide/Multiply: [tex]\displaystyle 1.99778 \ mol \ O_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
1.99778 mol O₂ ≈ 2.0 mol O₂
A heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is a____. it for science class
help me fill this out please, i give brainliest
Answer:
Okay, Left top= waning gibbous
left second= new moon
left third= third quarter
left fourth= waxing crescent
right top= Waning crescent
right second= first quarter
right third= full moon
right fourth= Waxing gibbous
hope you do good :)
Answer:
first one waining gibbious
secound one waining crecent
third one new moon
fourth one first quarter
fithe one third quarter
sixth one full moon
sevnth one waxing crecent
eithe one waxing gibbious
Explanation:
.25 g of each of the following gasses are taken at 27°C and 600 mm
Hg pressure. Which of these will have the least volume?
(Molar mass (g/mole): HCI = 36.5, HBr = 81, HI = 128, HF = 20)
(R=0.082 Latm/K.mole)
A. HC1
B. HBr
C. HI
D. HF
HI has the least volume
Further explanationGiven
Gasses and molar mass
Required
The least volume
Solution
Ideal gas law
PV=nRT
V = (nRT)/P
n = mass : MW(Molar weight=molar mass)
[tex]\tt V=\dfrac{\dfrac{mass}{MW}RT }{P}\\\\V=\dfrac{mass.RT}{MW.P}[/tex]
so V is inversely proportional to MW(molar mass)
Because the values of P, R, T, and mass are the same, what matters is the value of the molar mass of each compound. The larger the molar mass the smaller the volume
From the available molar mass data, HI has the largest molar mass, so HI has the smallest volume
Calculate the answer to the following questions and round to the correct # of
significant digits
518,000/2,500
The symbol for iron is Fe. The chemical symbol for oxygen is O. The formula for iron oxide, a type of rust is Fe2O3. How many iron atoms are in one molecule of iron oxide? A. 1
B. 2
C. 3
D. 4
Dry ice placed in room temperature water causes a lot of bubbling in the
water. When the bubbles burst, you see white cloudy-looking wisps. What are the
white clouds made of?
Answer:
carbon dioxide I beleive.
Explanation:
dry ice is frozen liquid carbon dioxide and when it melts it gives off carbon dioxide gas.
explain why the containers are heavy
Answer:
there is no picture so we can't tell why the containers are heavy
How many seconds in 4.3 years?
In the given question, 136293840 seconds are present in 4.3 years.
A second is a unit of time that is equal to 1/60th of a minute and is used to measure short periods of time.
To convert 4.3 years to seconds, we can use the following conversion factors:
1 year = 365.25 days (accounting for leap years)
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds
So, we can start by multiplying the number of years by the number of days per year:
4.3 years [tex]\times[/tex] 365.25 days/year = 1577.475 days
Next, we can multiply the number of days by the number of hours per day:
1577.475 days [tex]\times[/tex] 24 hours/day = 37859.4 hours
Then, we can multiply the number of hours by the number of minutes per hour:
37859.4 hours [tex]\times[/tex] 60 minutes/hour = 2271564 minutes
Finally, we can multiply the number of minutes by the number of seconds per minute to get the total number of seconds:
2271564 minutes [tex]\times[/tex] 60 seconds/minute = 136293840 seconds
Therefore, in 4.3 years there are approximately 136293840 seconds.
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____ 1. Which is responsible for removing waste? ____ ____ ____ ____ 2. 3. 4. 5. brain c. Kidneys heart d. Lungs Which body system is responsible for removing waste from your body? respiratory c. Excretory circulatory d. reproductive Which is not a kind of blood vessel? valve c. Capillary artery d. Vein Which body system is responsible for producing offspring? respiratory c.Excretory circulatory d. reproductive Which body system is responsible for bringing food and oxygen to every cell in your body? respiratory c. excretory circulatory d. reproductive ____ 6. Which body system is responsible for carrying oxygen and carbon dioxide in and out of your body? ____ 7. respiratory circulatory Which is not a part of the circulatory system? c. d. excretory reproductive a. blood c. blood vessels b. heart d. trachea
Answer:
[tex]1)kidneys \\ 2)excretory \\ \: \: 3)valve \\ \: 4)reproductive \\ \: 5)circulatory \\ \: 6)circulatory \\\ \: 7)trachea \\ \\ \\ plzz \: mark \: as \: brainliest[/tex]
how can paper that has already been used be physically changed
Answer:
the paper could be burn up
A drop in water temperature is observed when 0.848 g of ammonium nitrate is added. The enthalpy change for this reaction is +0.117 kJ. Calculate the Δ Hrxn, in kJ/mol, for this reaction.
The Δ Hrxn, in kJ/mol, for this reaction= 11.04 kJ/mol
Further explanationGiven
0.848 g ammonium nitrate
The enthalpy change : +0.117 kJ
Required
Δ Hrxn, in kJ/mol
Solution
Delta H reaction (ΔH) is the amount of heat change between the system and its environment
The value of ° H ° can be calculated from the change in enthalpy of standard formation:
∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)
mass of NH4NO3 = 0.848 g
mol of NH4NO3(MW = 80 g/mol)
mol = 0.848 : 80
mol = 0.0106
The Δ Hrxn :
= 0.117 kJ : 0.0106 mol
= 11.04 kJ/mol
Cynthia has 200kg of magnesium. Calculate how much MgCl2 she can make.
Mg + Cl2 = MgCl2
Answer:
784.4kg
Explanation:
Given parameters:
Mass of Mg = 200kg
Unknown:
Mass of MgCl₂ = ?
Solution:
The reaction equation is given as:
Mg + Cl₂ → MgCl₂
Find the number of moles of the given specie;
Number of moles of Mg = [tex]\frac{mass}{molar mass}[/tex] = [tex]\frac{200000}{24.3}[/tex] = 8230.5mole
So;
1 mole of Mg will produce 1 mole of MgCl₂
8230.5mole of Mg will produce 8230.5mole of MgCl₂
Mass of MgCl₂ = number of moles x molar mass
Molar mass of MgCl₂ = 24.3 + 2(35.5) = 95.3g/mol
Mass of MgCl₂ = 8230.5mole x 95.3g/mol = 784.4kg
How many moles are in 8.63 x 103 atoms of Li?
1.43 × 10⁻²⁰ mol Li
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:Step 1: Define
8.63 × 10³ atoms Li
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 8.63 \cdot 10^3 \ atoms \ Li(\frac{1 \ mol \ Li}{6.022 \cdot 10^{23} \ atoms \ Li})[/tex]Multiply/Divide: [tex]\displaystyle 1.43355 \cdot 10^{-20} \ moles \ Li[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
1.43355 × 10⁻²⁰ mol Li ≈ 1.43 × 10⁻²⁰ mol Li
what is one example of a electromagnetic wave
Answer:
Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.
Answer:
Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.
Explanation:
8SnCl4
How many atoms
Answer:
i think i like 14 or 8 atom
Explanation:
Which element forms more than one binary
compound with chlorine?
Са
Fe
Li
Zn
Answer:
fe
Explanation:
forms one binary compounds with chlorine
Why would a doctor most likely restrict a patient's contact with other people while the patient receives internal radiation?
The patient's stress and anxiety would be eliminated.
O High levels of radiation can diffuse through the patient's skin.
Social contact would increase the effect of the radiation treatment.
O Radioactive material can leave the patient's body through saliva, sweat, and urine.
Answer:
it is D
Explanation:
edge
Answer:
It's
Explanation:
I took the edge 2023
A 10.0 g sample of a hydrate was heated until all the water was driven off. The mass of the anhydrous product remaining was 8.00 grams. What is the percent of water in the hydrate?
Answer:
20%
Explanation:
10.0 = 100%
8.00 = 80%
100-80= 20
The way molecules in a substance move around each other
Answer:
diffusion
Explanation:
is the movement of molecules from high concentration to low concentration.
In a couplet one statement is _____ and one is ______
A. Agreeing and rejecting
B. Deciding and Acting
C. Informing and Agreeing
Answer: a
Explanation:
In a couplet one statement is agreeing and one is rejecting. Therefore, option A is correct.
What do you mean by couplet ?A couplet is two lines of poetry that follow each other, particularly two lines that rhyme and are the same length.
Heroic couplets are similar to elegiac couplets. Heroic couplets are also usually closed and have their own meaning. They are frequently used in English epics and narrative poems.
A couplet is a unit of two lines of poetry that use the same or similar meter, rhyme, or are separated from other lines by a double line break. Here are some more important facts about Couplets are not required to be separate stanzas.
Thus, option A is correct.
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Water, H2O, frequently forms Hydrogen Bonds with other non metal atoms.
Why does water do this?
A: the Oxygen has a partial negative charge which attracts atoms and molecules that have a position or partial positive charge
B: The Hydrogen has a partial negative charge which attracts atoms and molecules that have a positive or partial positive charge
C: Because Oxygen is extremely electronegative it attracts atoms and molecules with a negative or partial negative charge
D: Because Hydrogen has a very low electronegative rating it attracts atoms and molecules with a positive or partial positive charge
Answer:
Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.
Considering the definition of hydrogen bond, the correct answer is option A: he Oxygen has a partial negative charge which attracts atoms and molecules that have a position or partial positive charge.
In hydrogen bonds, a molecule that presents hydrogen interacts with another that presents an atom with high electronegativity, such as oxygen, fluorine or nitrogen (O, F, N). In this way, between the hydrogen, which has a low electronegativity and the electronegative atom, an interaction is established, due to their opposite charges.
On the other hand, electronegativity is the ability of an atom to attract shared electrons in a covalent bond.
In the case of water, because oxygen is more electronegative than hydrogen, electrons, which have a negative charge, are more likely to be closer to the oxygen atom than to the hydrogen atom, which causes each hydrogen atom to have a positive charge is called a positive partial charge, and that of oxygen, a negative charge, since it has the electrons closer together.
In summary, the correct answer is option A: he Oxygen has a partial negative charge which attracts atoms and molecules that have a position or partial positive charge.
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https://brainly.com/question/15698308https://brainly.com/question/14210785?referrer=searchResultshttps://brainly.com/question/4542860?referrer=searchResultshurry please Which of the following is a compound?
CO2
Ne
O2
P4
Answer:
p4
Explanation: