Number of moles : n₂ = 1.775 moles
Further explanationGiven
Moles = n₁ = 1.4
Volume = V₁=22.4 L
V₂=28.4 L
Required
Moles-n₂
Solution
Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles
The ratio of gas volume will be equal to the ratio of gas moles
[tex]\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}[/tex]
Input the values :
n₂ = (V₂ x n₁)/V₁
n₂ = (28.4 x 1.4)/22.4
n₂ = 1.775 moles
Which substance can not be broken down by a chemical change?
A)
magnesium
B)
water
C)
methane
D)
ammonia
Answer:
a
Explanation:
its too much of a solid to be broken down
The substance can not be broken down by a chemical change is A)magnesium.
What is a substance?substance can be regarded as a particular kind of matter which posses a uniform properties.
Therefore, during a chemical change all the given substance can be broken down because they are compounds, but magnesium is an element which cannot be broken down.
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A 4kg bowling ball is held 2.5 meters above your head. A 0.5 kg tennis ball is held at 12 meters above your head. Which one has more potential energy
Answer:
P.E for the 4kg bowling ball held 2.5 meters above head is 100j, while the other is 60j so the 4kg ball has more potential energy
Calculate the volume in milliliters of a 5.11/mol silver nitrate solution that contains 175.g of silver nitrate AgNO3. Round your answer to 3 significant digits.
Answer:
[tex]V=202mL[/tex]
Explanation:
Hello!
In this case, considering we have a 5.11-molar solution (5.11 M) that contains 175. g of silver nitrate, we first need to compute the moles of solute as its molar mass is 169.87 g/mol:
[tex]n=175g*\frac{1mol}{169.87 g} =1.03mol[/tex]
Next, since the definition of molarity is moles over volume:
[tex]M=\frac{n}{V}[/tex]
We solve for the volume and plug in the molarity and moles as shown below:
[tex]V=\frac{n}{M} =\frac{1.03mol}{5.11mol/L}\\\\V =0.202L[/tex]
However, as it is needed in milliliters, we convert the L to mL:
[tex]V=0.202L*\frac{1000mL}{1L}\\\\V=202mL[/tex]
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What is the mass of two moles of the diatomic gas, N2
Answer:
[tex]m_{N_2}=56.04 gN_2[/tex]
Explanation:
Hello!
In this case, since nitrogen diatomic gas is a molecule that has the following molar mass:
[tex]M_{N_2}=14.01*2\\\\M_{N_2}=28.02g/mol[/tex]
Thus, since we have two moles of this molecule, we can compute the referred mass as shown below:
[tex]m_{N_2}=2molN_2*\frac{28.02gN_2}{1molN_2}\\\\m_{N_2}=56.04 gN_2[/tex]
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3. Which compound has the greatest molar mass?
A. H2O B. C6H12O6 C. HNO3 D. C2H6
C₆H₁₂O₆ has the greatest molar mass (180 g/mol)
Further explanationGiven
Compounds of A. H2O B. C6H12O6 C. HNO3 D. C2H6
Required
The greatest molar mass
Solution
The molar mass(molecular mass-formula mass) of a compound is the sum of the relative atomic mass (Ar) of the constituent elements of the compound
A. H₂O : 2.1+16 = 18 g/mol
B. C₆H₁₂O₆ : 6.12+12.1+6.16=180 g/mol
C. HNO₃ : 1.1+1.14+3.16=63 g/mol
D. C₂H₆ : 2.12+6.1 = 30 g/mol
Compare What do infrared technologies, fiber optic
technologies, and satellite technologies all have in
common?
Answer:
ptic fiber communication and satellite communication are the leading technologies which are revolutionizing the world of telecommunications. Both technologies have their advantages and limitations which make them suitable for certain type of applications. This article will provide an overview of optic fiber and satellite communication technologies and present a comparison of the features and related issues.
Optic Fiber Communication
Optic Fiber communication transmits information by sending pulses of light (using laser) through an optic fiber. The low signal loss in optic fibers and high data rate of transmission systems, allow signals with high data rates (exceeding several Gbps) to travel over long distances (more than 100 km) without a need of repeater or amplifier. Moreover, using wavelength division multiplexing (WDM) allows a single fiber to carry multiple signals (upto 10 different signals) of multi-Gbps transmissions. Optic Fiber communication offers extremely high bandwidth, immunity to electromagnetic interference, non-existent delays and immunity from interception by external means. In the 1980s and 1990s, the continents were linked together using undersea optic fiber bringing about a paradigm shift in the global telecommunications.
These advancements in optic fiber communication has resulted in decrease of satellite communications for several types of communications. For instance, transmission between fixed locations or point-to-point communications, where large bandwidths are required (such as transoceanic telephone systems) are made through optic fiber instead of using satellite communication. Optic Fiber communication is also used to transmit telephone signals, Internet communication, LAN (Gigabit LAN) and cable television signals.
Satellite Communication
Satellite communications use artificial satellites as relays between a transmitter and a receiver at different locations on Earth. Satellite systems allow users to bypass typical carrier offices and to broadcast information to multiple locations. Communications satellites are used for radio, TV, telephone, Internet, military and other applications. There are more than 2,000 satellites around Earth’s orbit, being used for communication by both government and private organizations.
Communication Satellites are LOS (line-of-sight) microwave systems with a repeater. These satellites rotate around the earth with the speed of earth and are known as geostationary satellites. The limitations of antenna size also limits focusing capability making the coverage for a single satellite transmitter very large. This makes satellite communication ideal for TV and radio services as the signal has to flow from a single point to many points in a single direction. The large distance of satellites from the earth (about 22,300 miles) results in delays which adversely effects two-way communication like mobile conversations. Low earth orbit satellites can be used for two-way mobile communication because less power is required to reach those satellites.
Explanation:
Write balanced chemical equations for the sequence of reactions that oxalic acid can undergo when it's dissolved in water.
Answer and Explanation:
The balanced chemical equations are as follows:
The chemical formula of oxalic is [tex]H_2C_2O_4[/tex]
In the case when oxalic acts reacted with the water so here the oxalic acid eliminates one proton that leads to the development of mono acids
After that, the second step derives that when oxalic acid is in aqueous solution eliminates other proton so it represent the polyprotic acid
Now the chemical equations are as follows:
Elimination of one proton
[tex]H_2C_2O_4(aq)+H_2O(l) \rightarrow H_2C_2O_4^-(aq) + H_3O^+(aq)[/tex]
Now the elimination of other proton
[tex]HC_2O_4^-(aq)+H_2O(l) \rightarrow C_2O_4^2^-(aq) + H_3O^+(aq)[/tex]
What is the molar mass of magnesium
nitrate? Round to the nearest 0.01, and
include correct units AND substance
formula.
ANYONE CAN HELP ME WITH QUESTION PLEASE ?
Answer:148.31 Grams per mol
Explanation: It has been a long time since I took chemistry.
I believe you add up all the elements molar mass.
magnesium nitrate is Mg(NO3)2 so you add
MG 24.30
N 14.01 * 2 = 28.01
O 16.00 * 6 = 96.00
total is 148.31 grams per mol
I hope this helps.
The molar mass of magnesium nitrate is 148.31 grams per mol.
What is molar mass ?
The term molar mass is defined as the ratio between the mass and the amount of substance of any sample of the known compound. A mole of any substance is 6.022 × 10²³ molecules.
1 mole = 6.022 × 10²³ elementary entities.
The molar mass of a substance is calculated by adding the quality atomic masses in g/mol of the constituent atoms. Molar mass is represented by the symbol "M".
For calculating molar mass of magnesium nitrate is Mg(NO3)2
Mg = 24.30
Nitrogen = 14.01 × 2
= 28.01
Oxygen = 16.00 × 6
= 96.00
Therefore, molar mass of magnesium nitrate is Mg(NO3)2
= 24.30 + 28.01 + 96.00
= 148.31 grams per mol.
Thus, The molar mass of magnesium nitrate is 148.31 grams per mol.
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Could someone help as soon as possible PLEASEEEEEEEEE...
Answer:
A, D, E
Explanation:
a. "A dog panting to stay cool on a hot day" is a mechanism the dog employs to maintain it's body temperature. This is homeostasis.
d. "A bear hibernates in order to reduce their metabolism and conserve energy during the winter" is also all about keeping the internal condition of the bear's body constant. So this is also an example of homeostasis.
e. The lizard trying to keep regulate it's body temperature is also part of homeostasis.
How many molecules of water are required for the polymerization of a 22 monomer-long cellulose molecule
Answer:
21 molecules of water.
Explanation:
The polymerization of a 22-monomer long cellulose molecule will require 21 molecules of water. This is because the polymer bond is formed when the -OH group from the 1st monomer of the glucose unit and the H group from the 2nd monomer gets removed as a water molecule. This process is termed to be a condensation reaction.
at a particular temperature, asample of pure water has a Kw of 1.7x10-12. what is the hydroxide concentration of this sample
Answer:
Hydroxide concentration of the sample is 1.3x10⁻⁶M
Explanation:
The equilibrium constant of water, Kw, is:
H₂O(l) ⇄ H⁺(aq) + OH⁻(aq)
Kw is defined as:
Kw = 1.7x10⁻¹² = [H⁺] [OH⁻]
As the sample is of pure water, both H⁺ and OH⁻ ions have the same concentration because come from the same equilibrium, that is:
[H⁺] = [OH⁻]
We can write the Kw expression:
1.7x10⁻¹² = [OH⁻] [OH⁻]
1.7x10⁻¹² = [OH⁻]²
1.3x10⁻⁶M = [OH⁻]
Hydroxide concentration of the sample is 1.3x10⁻⁶MWhat type of reaction is shown here?
6Li + Ca3(PO4)2 → 2Li3PO4 + 3Ca
Which of the following is a covalent compound? *
CO2
OK20
O Naci
O MgCl2
Answer:
this question is badly formatted. CO2
Explanation:
the answer is CO2 because C and O are both anions/nonmetals. the other examples contain a cation/metal, so they're ionic compounds
How many atoms of oxygen are contained in 160 grams of N203?
Answer:
i think it is 1.27 x1024
Explanation:
i don't really know though
Answer:
(160/28+48)=(160/76)*6.022x10²³
Coach Ramirez made a cup of tea and stirred it with a spoon. The spoon became warm, How was the heat from the tea transferred to the spoon? *
Convection
Conduction
Radiation
Evaporation
In the laboratory you are asked to make a 0.175 m barium sulfide solution using 15.4 grams of barium sulfide. How much water should you add
Answer:
0.5195 liters of water
Explanation:
First we convert 15.4 grams of barium sulfide (BaS) into moles, using its molar mass:
15.4 g ÷ 169.39 g/mol = 0.0909 molThen we calculate the required volume of water, using the definition of molarity:
molarity = moles / volume0.175 M = 0.0909 mol / VolumeVolume = 0.5195 L34 atoms of carbon (C) react with 22 molecules of hydrogen gas (H2). How many molecules of methane (CH4) will be formed, and what will be left over
Answer:
11 molecules of CH4.
23 atoms of C is the leftover.
Explanation:
Hello!
In this case, for the formation of methane:
[tex]C+2H_2\rightarrow CH_4[/tex]
We can see there is an excess of carbon based on their stoichiometry, because the needed amount of hydrogen gas molecules would be:
[tex]molecules _{H_2}=34atomC*\frac{2molec\ H_2}{1atomC} =68molec\ H_2[/tex]
Thus, the formed molecules of methane are computed below:
[tex]molec\ CH_4=22molec\ H_2 *\frac{1molec\ CH_4}{2molmolec\ H_2} \\\\molec\ CH_4=11molec\ CH_4[/tex]
In such a way, the leftover of carbon atoms are:
[tex]atoms \ C^{left over}=34-22molec\ H_2*\frac{1atoms C}{2molec\ H_2} \\\\atoms \ C^{left over}=23 atoms C[/tex]
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A gas made up of homonuclear diatomic molecules escapes through a pinhole 0.936 times as fast as N2 gas. Write the chemical formula of the gas.
Answer:
See explanation
Explanation:
Let the rate of diffusion of the unknown gas be x
Let the rate of diffusion of nitrogen be y
Let molecular mass of unknown gas be MX
Let molecular mass of nitrogen be My
Hence;
x/y = √My/MX
0.936/1 = √28/MX
(0.936/1)^2= 28/MX
MX= 28/0.876096
MX= 32 g/mol
MX is O2 gas
What type of succession takes place when a community starts to grow?
A. Primary
B. Secondary
Answer:
Primary
Explanation:
Succession is a series of progressive changes in the composition of an ecological community over time. In primary succession, newly exposed or newly formed rock is colonized by living things for the first time.
which if the following is not an example of chemical change
A.iron crusting
B.cutting paper
C. apple ripening
D.a piece of wood burning
How many moles are in 6.21x1025 atoms of magnesium oxide?
Answer: 55.56 moles of MgO
Explanation:
1 mole = avogadro number
if 6.21x10^25 atoms then molecules of MgO (equal numbers of Mg and O atoms)
= 0.5*6.21x10^25 = 3.105 molecules of MgO
So moles of MgO = 0.5*6.21*10^25/avogadro number = 55.56
50POINTS!
If I held a 45.3 moles of a gas at a constant volume of 56.4L and a temperature 310.5k, what is the pressure being exerted on the gas?
A. 20.5 atm
B. 27.7 atm
C. 23.9 atm
D. 17.4 atm
Answer:
A. 20.5 atm
Explanation:
Using the formula Pv=.nRt
Answer:
PV=nRT
P(56.4)=45.3×0.08206×310.5
P=1154.227/56.4
=20.4650
Approximately 20.5 then A is the answer
a change in matter in which the density of the inatter
stays the same
Answer: A physical property that will be the same regardless of the amount of matter. Extensive Properties: A physical property that will change if the amount of matter changes.
which category of hurricanes cause the greatest damage
Answer:
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane's sustained wind speed. This scale estimates potential property damage. Hurricanes reaching Category 3 and higher are considered major hurricanes because of their potential for significant loss of life and damage.
Explanation:
Please mark me as brilliant and thank you.
Choose ALL of the factors that influence climate
Lesson 1.03
closeness to bodies of water
Altitude ( height above sea level)
latitude
geographic location
ocean currents
Answer: Its all of them
Explanation: I just took the test
The + symbol, on the products side, in a chemical equation means
Explanation:
Used to separate one reactant or product from another
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What is the name of the compound Hg4SiO4?
Answer:
mercury (I) silicate
Explanation:
How many moles of lead, Pb, are in 1.50 x 10^12 atoms of lead?
2.49 × 10⁻¹² moles Pb
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
1.50 × 10¹² atoms Pb
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 1.50 \cdot 10^{12} \ atoms \ Pb(\frac{1 \ mol \ Pb}{6.022 \cdot 10^{23} \ atoms \ Pb})[/tex]Multiply: [tex]\displaystyle 2.49087 \cdot 10^{-12} \ moles \ Pb[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
2.49087 × 10⁻¹² moles Pb ≈ 2.49 × 10⁻¹² moles Pb
Determine whether or not each chemical formula is an empirical formula. C6H12O6 CaCO3 NaMnO4 Ba3(PO4)2 K2C2O4
Answer:
- C6H12O6 is not an empirical formula because it can be simplified to CH2O.
- CaCO3 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- NaMnO4 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- Ba3(PO4)2 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- K2C2O4 is not an empirical formula because it can be simplified to KCO2.
Explanation:
Hello!
In this case, since the empirical formulas are referred to those formulas that have been simplified up to the smallest whole number for each subscript per atom, we can see that:
- C6H12O6 is not an empirical formula because it can be simplified to CH2O.
- CaCO3 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- NaMnO4 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- Ba3(PO4)2 is an empirical formula as well as molecular formula because it has been simplified up to the smallest subscript per atom.
- K2C2O4 is not an empirical formula because it can be simplified to KCO2.
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Draw the organic and inorganic products of the reaction, describe the type of bond cleavage, and classify the reaction.
Answer:
See explanation and images attached
Explanation:
The complete question his shown in the image attached to this answer.
This reaction is a substitution reaction. We identify it as a substitution reaction because one specie replaced another in the substrate.
The organic product and inorganic products were also shown in the image. The bond was breakage is a hetereolytic fission since the two electrons of the bond reside on only one of the species.