Answer: There are 0.854 moles of [tex]Al_{2}(CO_{3})_{3}[/tex] present in 200 g of [tex]Al_{2}(CO_{3})_{3}[/tex].
Explanation:
Given: Mass of [tex]Al_{2}(CO_{3})_{3}[/tex] = 200 g
As number of moles is the mass of substance divided by its molar mass.
Molar mass of [tex]Al_{2}(CO_{3})_{3}[/tex] is 233.99 g/mol.
Therefore, moles of [tex]Al_{2}(CO_{3})_{3}[/tex] is calculated as follows.
[tex]No. of moles = \frac{mass}{molar mass}\\= \frac{200 g}{233.99 g/mol}\\= 0.854 mol[/tex]
Thus, we can conclude that there are 0.854 moles of [tex]Al_{2}(CO_{3})_{3}[/tex] present in 200 g of [tex]Al_{2}(CO_{3})_{3}[/tex].
Cat added a sample of sodium hydroxide to water and
determined the pH to be 12. What is the pOH of the solution?
pOH =
Answer: 2
Bc when you subtract 12 from 14 you get 2
What distinguishes molecular solids from other types of crystalline solids?
A) In contrast to alternate crystal lattices, the molecular solids form strong, ionicly-bonded structures of atoms and ions.
B) Unlike other crystalline structures, molecular solids are formed form atoms that share their electrons among all bonded atoms.
C) Molecular solids are composed of individual, covalently-bonded molecules attracted to each other through intermolecular forces.
D) Alternate lattice structures do not consist of oppositely charged diatomic ions that are attracted through electrostatic attraction.
Answer:
C
Explanation:
Usa test prep.
Help!!! For chemistry
Answer:
2KMnO₄ + 4SO₂ + H₂ ⟶ K₂SO₄ + 2MnSO₄ + H₂SO₄
Explanation:
KMnO₄ + SO₂ + H₂ ⟶ K₂SO₄ + MnSO₄ + H₂SO₄
Balanced Equation
2KMnO₄ + 4SO₂ + H₂ ⟶ K₂SO₄ + 2MnSO₄ + H₂SO₄
-TheUnknownScientist
Meera wants to improve the percolation rate and fertility of clayey soil what should she add to the soil ?
PLEASE HELPP MEEE ASAPPPPP
Answer:
2. Solute
3. Suspension
4. Colloid
5. Compound
Explanation:
isssssssssssssssssssssssssssssss im fat
Answer:
just lose it then lol
Explanation:
Please Help ASAP!!!!!!!!!!!!!!!!!!
Answer:
Using the drop down Menu
Proton : Possessing a Charge of +1. It is found in the Nucleus and has a Mass of "A"
Neutron; Possesses a charge of 0. It is situated in the Nucleus and Has a Mass of "B"
Electron: Has a charge of -1. Found in the Orbitals of the atom and has a mass of "C"
What are the requirements needed for a hydrogen bond to form?
Answer:
Explanation:
it should be more electro-negative
than hydrogen and it should be small sized atom
The molecules who fulfill these needs are
oxygen, nitrogen and fluorine.
1. A cupcake show makes and delivers specialized cupcakes. It will cost someone $30 for
10 cupcakes and $67.50 for 25 cupcakes. This total includes the cost per cupcake and
delivery fee. How much does each cupcake cost? (enter your answer with just the number,
no $ sign)
Answer:
2.5
Explanation:
The given costs for the purchase and delivery of the cupcakes are;
The cost of 10 cupcakes and the delivery fee = $30
The cost of 25 cupcakes and the delivery fee = $67.50
Let 'c' represent the fixed cost of delivery of the cup cakes, and let 'x' represent the cost of each cup cake, we have;
30 = 10·x + c...(1)
67.50 = 25·x + c...(2)
Subtracting equation (1) from equation (2) gives;
67.50 - 30 = 37.50 = 25·x - 10·x + c - c = 15·x
∴ x = 37.50/15 = 2.5
The cost of each cupcake, x = 2.5
(∴ The delivery fee = 30 - 10 × 2.5 = 5)
The cost of each cupcake is 2.5.
is 8Ag2S → 16Ag + 1S8 a single replacement
Which molecule is a stereoisomer of trans-2-pentene?
Answer:
cis-2-pentene
Explanation : The stereoisomers are the compound which differs only in the spatial arrangement of the atoms across the stereogenic centers.
There are mainly two forms of stereoisomers cis and trans. Cis-isomers are those where the two bulky or functional groups are arranged on the same side across the stereogenic center; whereas, in trans-isomers the two bulky groups or functional groups are arranged in the opposite sides of stereogenic center.
A 2.50 L balloon is filled with water at 2.27 atm. If the balloon is squeezed into a 0.80 L beaker and does NOT burst, what is the pressure of water in the balloon?
Answer:
[tex]P_2=7.09atm[/tex]
Explanation:
Hello!
In this case, given the change in volume and pressure of the gas, it is possible for us to recall the Boyle's law as way to understand the inversely proportional relationship between pressure and volume:
[tex]P_1V_1=P_2V_2[/tex]
Thus, when solving for the final pressure, P2, given the initial pressure and volume and the final volume, we obtain:
[tex]P_2=\frac{P_1V_1}{V_2}\\\\P_2=\frac{2.27atm*2.50L}{0.80L}\\\\P_2=7.09atm[/tex]
Best regards!
Answer:
7.1 atm
Using Boyle’s law, P1 V1=P2 V2.
Which of the clouds shown would indicate a possible future rain storm?
A) A
B) B
C) C
D) D
K2SO4 (aq) + NaOH (aq)
Answer:
K₂SO₄(aq) + 2NaOH(aq) → Na₂SO₄(aq) + 2KOH(aq)
Explanation:
The type of reaction is Double Displacement (Metathesis)
At the same conditions of temperature and pressure, 5.0 dm^3 of a gas of molecular formula C_2 H_2, has a mass of 15 g, while 1.0 dm^3 of gas D has a mass of 1.4 g. What is the molar mass of gas D?
Underscore means subscript but I can't get the equation thingy to work. So it's meant to be C(subscript 2)H(subscript 2)
Answer:
12 g/mol
Explanation:
From Avogadro's law;
V1/n1 = V2/n2
V1 = 5.0 dm^3
n1 = 15 g/26 g/mol = 0.6 moles
V2 = 1.0 dm^3
n2 = ?
V1n2 = V2n1
n2 = V2n1/V1
n2 = 1 * 0.6/5
n2 = 0.12 moles
Molar mass= mass of gas D/number of moles of gas D
Molar mass= 1.4 g/0.12 moles
Molar mass= 12 g/mol
What is an example of a community protecting Earth's resources? (2 points)
a
Cattle ranchers have cut down trees to create space for their cattle.
b
A town has started getting their vegetables transported from far away.
c
A mine has burned down a forest to create room for buildings.
d
A town has started a new recycling and composting program.
D. A town has started a new recycling and composting program
Answer:
D A town has started a new recycling and composting program
Explanation:
Can electric charge start a fire ?
What volume will 2.0 moles of nitrogen occupy at 0.947 atm and 20.0 °C?
Answer:
V = 50.77 L
Explanation:
Given that,
No. of moles, n = 2
Pressure, P = 0.947 atm
Temperature, T = 20°C = 293 K
We need to find the volume occupies by Nitrogen gas. Using gas law,
[tex]PV=nRT\\\\V=\dfrac{nRT}{P}[/tex]
Where
R is gas constant
Put all the values,
[tex]V=\dfrac{2\times 0.08205\times 293}{0.947}\\\\V=50.77\ L[/tex]
So, the volume occupied by the gas is equal to 50.77 L.
Compounds that are chemically stable break down quickly.
True or False
Answer:
False
Explanation:
chemically stable compounds are stable so they do not break down quickly.
Answer:
I think False
As
stable compounds are of lower energy and have a balanced charge. ... So, very loosely, a compound could be said to be stable when it is low in potential energy, has a neutral or spread out charge, and can be used in regular conditions.
THAT'S WHY THEY DO NOT BREAK DOWN EASILY
if wrong correct me pls
have a nice day
#Captainpower
pls I need this fast.
Write and overall equation for the acid-base reaction that would be required to produce each of the following salt : NaCI
Explanation:
HCl(aq)+ NaOH(aq)→NaCl(aq)+H2O(l) ..
What is energy? Give at least two examples of how you use energy in your everyday life.
Answer:
To walk or run, and to wake up.
A student increases the temperature of a 355 cm3 balloon from 325K to 353K. What
will the new volume of the balloon be?
Charles's Law
V 부
273 cm
3
327 cm
3
353 cm 3
386 cm
3
Answer:
385.6cm³
Explanation:
Using Charles law equation as follows;
V1/T1 = V2/T2
Where;
V1 = initial volume (cm³)
V2 = final volume (cm³)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question;
V1 = 355cm³
V2 = ?
T1 = 325K
T2 = 353K
Using V1/T1 = V2/T2
355/325 = V2/353
1.092/1 = V2/353
Cross multiply
1.092 × 353 = V2
V2 = 385.6cm³
We can find many online videos in which a marshmallow is exploded by placing it in a microwave oven and turning the oven on. Why is this not an illustration of Boyle's Law?
Answer:
This illustrates Boyle's law, which states that a gas expands if the pressure decreases while all other variables are kept constant. When heating a marshmallow in a microwave, some moisture inside the marshmallow evaporates, adding gas to the bubbles. In addition, a warmer gas pushes outward with more force.
Explanation:
is the compound Fed3 ionic or covalent
The complete question is: Is the compound [tex]FeCl_{3}[/tex] ionic or covalent ?
Answer: Compound [tex]FeCl_{3}[/tex] is an ionic in nature.
Explanation:
When a metal atom combines with a non-metal atom then transfer of electrons take place from metal towards the non-metal. As a result, an ionic bond is formed between the atom and compound formed is called an ionic compound.
For example, [tex]FeCl_{3}[/tex] compound contains Fe atom which is a metal and Cl atom which is a non-metal. Hence, electrons will be transferred from Fe atom to the Cl atom forming an ionic bond.
Hence, [tex]FeCl_{3}[/tex] is an ionic compound.
Thus, we can conclude that [tex]FeCl_{3}[/tex] is an ionic compound.
Convert particles to moles: 8.3 x 10^20 atoms Cu
Answer:
[tex]\boxed {\boxed {\sf 0.0014 \ mol \ Cu}}[/tex]
Explanation:
We are asked to convert particles to moles.
1. Avogadro's Number1 mole of any substance contains the same number of particles (atoms, molecules, formula units). This is Avogadro's Number or 6.022*10²³.
In this problem, the particles are atoms of copper. So, 1 mole of copper contains 6.022*10²³ atoms of copper
2. Convert Atoms to MolesUse Avogadro's Number to make a ratio.
[tex]\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}[/tex]
We are trying to convert 8.3*10²⁰ atoms of copper to moles, so we multiply that value by the ratio.
[tex]8.3*10^{20} \ atoms \ Cu*\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}[/tex]
The units of "atoms Cu" will cancel.
[tex]8.3*10^{20}\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} }[/tex]
Condense the expression into 1 fraction.
[tex]\frac{8.3 *10^{20}}{ 6.022*10^{23} } \ mol \ Cu[/tex]
[tex]0.001378279641 \ mol \ Cu[/tex]
3. RoundThe original measurement of atoms has 2 significant figures, so our answer must have the same. For the number we calculated that is the ten-thousandths place.
0.001378279641The 7 in the hundredth thousandth place tells us to round the 3 up to a 4.
[tex]0.0014 \ mol \ Cu[/tex]
8.3*10²⁰ atoms of copper are equal to 0.0014 moles of copper.
How many hydrogens are in 4H207?
how is melting similar to freezing
Answer:
no similarities but if that's so it's temperature
What is the pOH of a 0.013 M Ca(OH)2 solution?
Answer:1.59
Explanation: For every mol of Ca(OH)2 there are two moles of OH so the concentration of OH is .013 x2 =.026 M OH
pOH = - log [OH] so -log .026 = 1.59
pOH is the negative logarithm of hydroxide ion concentration. 1.59 is the pOH of a 0.013 M Ca(OH)₂ solution.
What do you mean by the term pOH?The term pOH is defined as the negative of the logarithm of the OH− ion concentration. It is represented by the formula pOH = - log [OH−].
pOH is the activity of acidity or alkalinity of a solution by determining the concentration of OH− ions.
If the pOH value is less than 7, the solution is basic. If the pOH value is equal to 7, the solution is neutral. If the pOH value is more than 7, the solution is acidic.
For every mol of Ca(OH)₂ there are two moles of hydroxide therefore, the concentration of OH is 0.013 x 2 = 0.026 M OH
According to the formula of pOH
pOH = - log [OH]
-log .026 = 1.59
Thus, the pOH of a 0.013 M Ca(OH)₂ solution is 1.59.
To learn more about the pOH, follow the link;
https://brainly.com/question/17144456
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175 mL of a 1.6 M solution of KCl is diluted to a new volume of 1.0 L. What is the new concentration of the solution?
a. .13 M KCI
b. .28 M KCI
c. .85 M KCI
d. 1.1 M KCI
Answer:
b. .28 M KCI
Explanation:
Use the dilution formula.
C₁V₁ = C₂V₂
C₂ = C₁V₁/V₂
C₂ = 1.6*0.175 / 1.0
C₂ = 0.28
The new concentration of the solution of KCl which is diluted to a new volume of 1.0 L is 0.28 M KCI.
What is concentration?Concentration is the abundance of substance or constituent divided by the volume of the mixture.
By the dilution formula
C₁V₁ = C₂V₂
C₂ = C₁V₁/V₂
The concentration is 1.6 M
The volume of KCl is 0.175
The new volume v2 is 1.0 l
Putting the values in the equation
C₂ = 1.6 × 0.175 / 1.0
C₂ = 0.28
Thus, the correct option is b. 0.28 M KCI.
Learn more about concentration
https://brainly.com/question/10725862
Which of the following is the weakest type of intermolecular
force?
o Hydrogen bonding
o Induced dipole
London dispersion
o Dipole-dipole
Answer:
London Dispersion