Answer:
Yes
Explanation:
Chemistry
5. Based on Reference Table F, which of the following saturated solutions would be the least concentrated?
1) copper (II) sulfate 2) barium sulfate
3) sodium sulfate 4) potassium sulfate
Answer:
barium sulfate
Explanation:
a sample of gaseous water is composed of 2.34 moles. What is the samples volume at STP ?
Answer:
The sample's volume at STP is 52.416 L.
Explanation:
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
Then you can apply the following rule of three: if 1 mole of a gaseous sample occupies 22.4 L, 2.34 moles how much volume does it occupy?
[tex]Volume=\frac{2.34 moles* 22.4 L}{1 mole}[/tex]
Volume= 52.416 L
The sample's volume at STP is 52.416 L.
If the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in the solution at that temperature, the solution is said to be
a.diluted.
b.unsaturated.
c.saturated.
d.supersaturated.
Answer:
d. supersaturated.
Explanation:
A solution naturally contains a solute and a solvent. The solute is the solid substance that dissolves in the solvent, which is usually a liquid substance. A solution has a maximum amount of solute that can dissolve in its constituent solvent.
However, when the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in the solution at that temperature, the solution is said to be SUPERSATURATED. This means that the solution contains more than the maximum amount of solute.
How much potassium nitrate could be dissolved into 2L of water
Answer:
About 110 g.
Your tool of choice here will be the solubility graph for potassium nitrate, KNO3, in water.
Answer:
613
Explanation:
search up that question at coursehero.com...these questions were originally made there, with the answers
Calculate the volume of 5.0 grams of NO gas at STP.
Answer:
The volume of 5.0 g CO 2 is 2.6 L CO 2 at STP
Explanation:
STP
STP is currently
0
∘
C
or
273.15 K
, which are equal, though the Kelvin temperature scale is used for gas laws; and pressure is
10
5
.
Pascals (Pa)
, but most people use
100 kPa
, which is equal to
10
5
.
Pa
.
You will use the ideal gas law to answer this question. Its formula is:
P
V
=
n
R
T
,
where
P
is pressure,
V
is volume,
n
is moles,
R
is a gas constant, and
T
is temperature in Kelvins.
Determine moles
You may have noticed that the equation requires moles
(
n
)
, but you have been given the mass of
CO
2
. To determine moles, you multiply the given mass by the inverse of the molar mass of
CO
2
, which is
44.009 g/mol
.
5.0
g CO
2
×
1
mol CO
2
44.009
g CO
2
=
0.1136 mol CO
2
Organize your data
.
Given/Known
P
=
100 kPa
n
=
0.1136 mol
R
=
8.3145 L kPa K
−
1
mol
−
1
https://en.wikipedia.org/wiki/Gas_constant
T
=
273.15 K
Unknown:
V
Solve for volume using the ideal gas law.
Rearrange the formula to isolate
V
. Insert your data into the equation and solve.
V
=
n
R
T
P
V
=
0.1136
mol
×
8.3145
.
L
kPa
K
−
1
mol
−
1
×
273.15
K
100
kPa
=
2.6 L CO
2
rounded to two significant figures due to
5.0 g
Answer link
Doc048
May 18, 2017
I got 2.55 Liters
Explanation:
1 mole of any gas at STP = 22.4 Liters
5
g
C
O
2
(
g
)
=
5
g
44
(
g
mole
)
=
0.114
mole
C
O
2
(
g
)
Volume of 0.114 mole
C
O
2
(
g
)
= (0.114 mole)(22.4 L/mole) = 2.55 Liters
C
O
2
(g) at STP
the reaction that takes place in chemical cell is best classified as. A.fusion B.redox C.transmutation D.redox
The reaction in the chemical cell has been best classified as the redox reaction. Thus, option B is correct.
The reaction cell or the voltaic cell has been the one that has been able to convert electrical energy into chemical energy. In the chemical cell, electrical energy has been provided to the cell for bringing the chemical change.
The chemical change has been brought by the oxidation and reduction of the elements with the application of electric current. The reaction that has been based on the oxidation and reduction of the elements has been termed the redox reaction.
Thus, the reaction in the chemical cell has been best classified as the redox reaction. Thus, option B is correct.
For more information about the chemical cell, refer to the link:
https://brainly.com/question/995105
A bronze bell containing copper and tin is
a. pure substance
b. colloidal suspension
c. a solid solution
d. heterogenous mixture
Answer:
I will go for a heterogeneous mixture
Explanation:
alloy is basically a mixture
Compound A has 4 moles of hydrogen, 4 moles of oxygen, and
1 moles of silicon. The empirical formula of the compound is???
In H4SiO4, the mole ratio of carbon to hydrogen to oxygen is the same as described in the question. Therefore H4SiO4 is the empirical formula
I hope this helps you!!
Carbon can be used to displace some metals from their ores. Explain the process by which iron is displaced from its ore by carbon in a blast furnace. Include the reaction equation. *
Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as hematite contain iron(III) oxide, Fe2O3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.
Carbon is more reactive than iron, so it can displace iron from iron(III) oxide. Here are the equations for the reaction.
Step 1 – Hot air (oxygen) reacts with the coke (carbon) to produce carbon dioxide and heat energy to heat up the furnace.
C(s) + O2(g) → CO2(g)
Step 2 – More coke is added to the furnace and reduces the carbon dioxide into carbon monoxide, a good reducing agent.
CO2(g) + C(s) → 2CO(g)
Step 3 – iron(III) oxide is reduced.
iron(III) oxide + carbon → iron + carbon dioxide
2Fe2O3(s) + 3C(s) → 4Fe(l) + 3CO2(g)
In this reaction, the iron(III) oxide is reduced to iron, and the carbon is oxidized to carbon dioxide.
In the blast furnace, it is so hot that carbon monoxide can be used, in place of carbon, to reduce the iron(III) oxide:
iron(III) oxide + carbon monoxide → iron + carbon dioxide
Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)
More than you asked
If the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in the solution at that temperature, the solution is said to be
a. diluted.
b. unsaturated.
c. saturated.
d. supersaturated.
that temperature is saturated.
What do producers, consumers, and decomposers all have in common?
A. They only exist on land.
B. They are all the same type of organism.
C. They only live in ecosystems with warm temperatures.
D. They rely on abiotic components of ecosystems to live.
Which statement best describes why modern horses look the way they do?
Aspects of horse anatomy evolved within a few generations to suit their environment.
Aspects of horse anatomy evolved over hundreds of years to suit their environment
Aspects of horse anatomy evolved over millions of years to suit their environment.
Aspects of horse anatomy evolved within a generation to suit their environment.
Answer:
C
Explanation:
C
Aspects of horse anatomy evolved over millions of years to suit their
environment.
EvolutionEvolution refers to the various ways and forms organisms developed
throughout the years. This is usually as a result of their adaptation to
different living conditions.
Horses were believed to be similar to dogs millions of years ago according
to discovered fossils but became taller as a result of their adaptation to the
plains which they now lived in.
Read more about Horse here https://brainly.com/question/16331056
If you are given 720.00 Grams of Oxygen how many moles of Oxygen will you have?
Answer:
720 divided by 2 answer is 556 so answer per is 3.32.3
Explanation:
Ammonia reacts with oxygen according to the reaction
4NH3(g) + 5O2(g) + 4NO(g) + 6H2O(g), AHrx = -906 kJ
Calculate the heat associated with the complete reaction of 155 g of NH3 .
Express the artswer in kilojoules to three significant figures.
Se
ΑΣΦ
?
kJ
her
9.pdf
Submit
Request Answer
Part B
Answer:
-2070 kJ
Explanation:
Which statement is most correct?
A. Electric currents and magnets each exert a force.
B. Electric currents exert a force but magnets do not.
C. Neither an electric current nor a magnet exert a force.
D. Electric currents do not exert a force but magnets do exert a force.
Answer: A
Explanation:
__ CaSO4 + ____AIP --> ____Ca3P2 + ____AI2(SO4)3
if a student has 7.33 moles of CaSO4 to use how many moles of AIP do they need
Answer:
4.89 mol
Explanation:
Step 1: Write the balanced equation
This is a double displacement reaction.
3 CaSO₄ + 2 AIP ⇒ Ca₃P₂ + AI₂(SO₄)₃
Step 2: Establish the appropriate molar ratio
According to the balanced equation, the molar ratio of CaSO₄ to AlP is 3:2.
Step 3: Calculate the moles of AlP needed to react with 7.33 moles of CaSO₄
We will use the previously established molar ratio.
7.33 mol CaSO₄ × 2 mol AlP/3 mol CaSO₄ = 4.89 mol AlP
A brick has a mass of and the Earth has a mass of . Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of bricks? Round your answer to 2 significant digits. How many moles of bricks have a mass equal to the mass of the Earth? Round your answer to 2 significant digits.
The given question is incomplete. The complete question is:
A brick has a mass of 4.0 kg and the earth has a mass of [tex]6.0\times 10^{27}g[/tex] Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of bricks? Round your answer to 2 significant digits. How many moles of bricks have a mass equal to the mass of the Earth? Round your answer to 2 significant digits.
Answer: The mass of 1 mole of bricks is [tex]2.4\times 10^{27}g[/tex]
2.5 moles of bricks have a mass equal to the mass of the Earth
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
Mass of 1 brick = 4.0 kg = 4000 g (1kg=1000g)
Thus mass of 1 mole of brick or [tex]6.023\times 10^{23}[/tex] bricks will be = [tex]\frac{4000g}{1}\times 6.023\times 10^{23}=2.4\times 10^{27}g[/tex]
The mass of 1 mole of bricks is [tex]2.4\times 10^{27}g[/tex]
Now [tex]2.4\times 10^{27}g[/tex] will correspond to = 1 mole of bricks
[tex]6.0\times 10^{27}g[/tex] will correspond to =[tex]\frac{1}{2.4\times 10^{27}}\times 6.0\times 10^{27}=2.5moles[/tex]
2.5 moles of bricks have a mass equal to the mass of the Earth
Whats the atomic number for protactinium-231
Answer:
91
Fact box
Group Actinides 1572°C, 2862°F, 1845 K
Block f 15.4
Atomic number 91 231.036
State at 20°C Solid 231Pa
Electron configuration [Rn] 5f26d17s2 7440-13-3
Explanation:
2 C4H10 + 13 O2 ---> 8 CO2 + 10 H2O 4. You have 35.25 L of C4H10 what is the theoretical yield in grams of carbon dioxide?
Answer:
277.0g of CO₂ is theoretical yield
Explanation:
In the reaction, 2 moles of C₄H₁₀ react with 8 moles of CO₂.
To solve this question, we must convert the volume of the C₄H₁₀to moles. Then, using the chemical reaction, find the moles of CO₂ produced and its mass as follows:
PV = nRT
Assuming STP conditions:
P = 1atm
V = 35.5L
n are moles
R = 0.082atmL/molK
T = 273.15K
Replacing:
n = PV/RT
n = 1atm*35.25L / 0.082atmL/molK*273.15K
n = 1.574 moles C₄H₁₀
Assuming all these moles are converted in CO₂ (theoretical yield), the moles of carbon dioxide are:
1.574 moles C₄H₁₀ * (8mol CO₂ / 2mol C₄H₁₀) = 6.295 moles CO₂
And the theoretical yield in mass is:
6.295 moles CO₂ * (44.01g / mol) =
277.0g of CO₂ is theoretical yieldWhy does CH4 have a higher vapor pressure at a given temperature than CH3Cl? Why does CH3OH have a higher vapor pressure at a given temperature than CH3CH2CH2OH? Why does H2CO have a higher vapor pressure at a given temperature than CH3OH?
Explanation:
CH4, methane is a non polar compound whereas CH3Cl is a polar compound because of presence of electronegative element chlorine. Hence, there is a net dipole moment in case of CH3Cl( Chloromethane). This causes CH3Cl to exhibits dipole-dipole intermolecular force of attraction, which is absent in CH4. Therefore, Chloromethane has a lower vapor pressure when compared to methane.
Why is the age of the ocean crust used as evidence for plate tectonics?
Answer:
The great age of continental rocks results from their inability to be subducted. ... We also know that the increase in age of ocean crust away from ocean basins results from creation of new sea floor at the MORs, with destruction of older sea floor at ocean trenches, which are often located near continental margins.
Explanation:
The age of the ocean crust used as evidence for plate tectonics because older ocean crust is being melted back into the mantle at divergent boundaries.Older ocean crust is being melted back into the mantle at divergent boundaries. Therefore, option A is correct.
Why plate tectonics is a theory?Plate tectonics is a theory because it supplies an explanation of why and how segments of the earth displace and make earthquakes and mountains and volcanos.
This states why ocean floor rocks are generally less than 200 million years old whereas the oldest continental rocks are more than 4 billion years old.
The great age of continental rocks effects from their inability to be subducted. We also know that the addition in age of ocean crust away from ocean basins results from activity of new sea floor at the MORs, with destruction of older sea floor at ocean trenches.
Thus, option A is correct.
To learn more about the plate tectonics, follow the link;
https://brainly.com/question/19317822
#SPJ2
Your question is incomplete, most probably your question was
Why is the age of the ocean crust used as evidence for plate tectonics?
A Older ocean crust is being melted back into the mantle at divergent boundaries.Older ocean crust is being melted back into the mantle at divergent boundaries.
B There are striations on the ocean crust where the continental crust moved over the top of it.There are striations on the ocean crust where the continental crust moved over the , top of it.
C Ocean crust is older than continental crust so it shows that the continents are younger.Ocean crust is older than continental crust so it shows that the continents are , younger.
D New ocean crust is being formed at underwater divergent boundaries pushing away older crust.
Can someone explain to me the meaning of reaction rate and rate constant :)
Answer:
Reaction Rate is the reaction rate or reaction is the speed at which chemical reaction takes place.
Rate constant is the chemical kinetics a reaction rate constant or reaction rate
calcium (Ca) is in group 2 on the periodic table. what does this tell you about this element?
Answer:
its valnce electrons is 2 and the reaction to metal
Is this true or false?
false
true
Answer:
True
Explanation:
Engineers Julie and Walter operate a reactor where two unbalanced, gas phase reactions occur: CH3COOH+H2→C2H5OH+H2O and C2H5OH→(C2H5)2O+H2O. In the first reaction, acetic acid (CH3COOH) and hydrogen (H2) react to produce ethanol (C2H5OH) and water (H2O); and ethanol decomposes to diethyl ether ((C2H5)2O) and water in the second reaction. A stream of 67.8 mol/s hydrogen and the balance acetic acid at 147°C is fed to the reactor, which operates at steady state. The stream exiting the reactor contains acetic acid, hydrogen, ethanol, water, and diethyl ether at 417°C. The component flow rate of acetic acid exiting the reactor is 3.81 mol/s. The fraction conversion of acetic acid is 71.6%, and the selectivity, which is the ratio of the amount of ethanol to diethyl ether in the exiting stream, is 3.14. Assume all components are in the gas phase and no phase changes occur in the reactor.
Find the component molar flow rate of acetic acid(AA) entering the reactor.
Answer:
Explanation:
From the given information:
The two reactions occurring in the reactor are:
[tex]\mathtt{CH_3COOH + 2H_2 \to C_2H_5OH + H_2O}[/tex]
[tex]\mathtt{2C_2H_5OH \to (C_2H_5)_2O+H_2O}[/tex]
Let molar flowrate of [tex]\mathtt{CH_3COOH}[/tex] entering reactor = [tex]\mathtt{x_n}[/tex]
From the first reaction:
[tex]\mathtt{CH_3COOH + 2H_2 \to C_2H_5OH + H_2O}[/tex]
Since there is a 71.6% conversion of [tex]\mathtt{CH_3COOH}[/tex];
Then, amount of [tex]\mathtt{CH_3COOH}[/tex] remaining unreacted and exiting the reactor is:
= x - 0.716x
= 0.284x
Recall that; the component flow rate exiting the reactor = 3.81 mols
∴
0.284x = 3.81
x = 3.81/0.284
x = 13.42 moles
Thus, the molar flowrate of [tex]\mathtt{CH_3COOH}[/tex] entering the reactor is 13.42 moles
Plants get all their matter from soil. True or False
Answer:
False
Explanation:
Not all of it but some of it. Hope this helps! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
Explain , in terms of electrons, why the bonding in strontium sulfide , SrS , is similar to the bonding in magnesium bromide, MgBr 2,
Explanation:
The bonding in Magnesium Bromide is ionic bonding. Ionic bonding occurs between metals and non metals, due to the transfer of electrons.
Strontium Sulphide is also an ionic compound. The metal is Strontium and the non metal is sulphur.
In terms of electrons, it is similar to Magnesium bromide in the sense that the metal lost two electrons and the non metal gained two electrons which is the same as in Magnesium Bromide.
= Br
= C
Name is
1
, formula is
Answer:
yqujsbr
Explanation:
hejsudh2ihdg4 they t sjh5c4uSvreju5 aur bd84kskythddok6vr for
Q: How does the starting
position affect the speed of a
ball rolling down a ramp?
I NEED HELPP PLSSS ASAP!!!
The force of gravity points straight down, but a ball rolling down a ramp doesn't go straight down, it follows the ramp. Therefore, only the component of the gravitational force which points along the direction of the ball's motion can accelerate the ball. The other component pushes the ball into the ramp, and the ramp pushes back, so there is no acceleration of the ball into the ramp. If the ramp is horizontal, then the ball does not accelerate, as gravity pushes the ball into the ramp and not along the surface of the ramp. If the ramp is vertical, the ball just drops with acceleration due to gravity. These arguments are changed a bit by the fact that the ball is rolling and not sliding, but that only affects the magnitude of the acceleration but not the fact that it increases with ramp steepness.
What must ALWAYS be used to convert between quantities of two different chemical substances?
Answer:
Balanced equations and mole ratios
In general, mole ratios can be used to convert between amounts of any two substances involved in a chemical reaction.
Explanation:
yw
Answer:
ask your mom and your family
Explanation:
tell your mom that she sucks