6 NaOH + 2 Al --> 2 Na3AlO3 + 3 H2 If you start with 258 g of Al, how many moles of Na3AlO3 can you make?
Answers
Solution :
Assuming all Al will be consumed in the reaction.
From the given equation, 2 mole of Al produce 2 mole of \(Na_3AlO_3\).
So, 1 mole of Al produce 1 mole of \(Na_3AlO_3\). .....statement 1)
Number of moles of Al in 258 gram of Al.
\(n = \dfrac{mass}{molar\ mass}\\\\n = \dfrac{258}{27}\ moles\\\\n = 9.556 \ moles\)
Therefore, from statement 1) number of moles of \(Na_3AlO_3\) produced is also 9.556 moles.
Related Questions
.115km=_______cm
Please I need help!
Explanation need
Answers
Answer:
online it says .115km equals 11500cm
Please Help me with this question, No.4
Answers
17.0 g of Al₂O₃ forms from 16 g of O₂ and excess Al ,and when the molar mass of Al₂O₃ is 102 g/mol.
What is molar mass?Molar mass is the mass of one mole of a substance. It is usually expressed in units of grams per mole (g/mol). For example, the molar mass of carbon is 12.01 g/mol, which means that one mole of carbon has a mass of 12.01 grams. Molar mass is useful in chemistry because it allows us to convert between mass and moles of a substance, which is important for many chemical calculations.
The molar mass of Al₂O₃ is 102 g/mol, which means that for every 102 g of Al₂O₃ produced, 3 × 32 g (or 96 g) of O₂ is consumed.
We can use this ratio to find the mass of Al₂O₃ formed from 16 g of O₂:
96 g of O₂ produces 102 g of Al₂O₃
1 g of O₂ produces (102 g / 96 g) of Al₂O₃
16 g of O₂ produces (102 g / 96 g) × 16 g = 17.0 g of Al₂O₃
To know more about Molar mass, visit:
https://brainly.com/question/22997914
#SPJ1
A tow truck does 10,000 J of work in 5 seconds. Calculate the power.
Answers
Answer:
power is work/time so 10,000j/5s=2000J/s
a certain culture of the bacterium streptococcus a initially has 8 bacteria and is observed to double every 1.6 hours. (a) estimate the number of bacteria after 26 hours. (round your answer to the nearest whole number.) bacteria (b) after how many hours will the bacteria count reach 10,000? (round your answer to one decimal place.) t
Answers
(a) here no is the initial amount and no = 8 we are told that the culture doubles every 1.5 hours. we can use the model given to us in part a to find the variable a.
16-8.2 1.5/a
16 2
8 21 1.5/a = 2
1 = 1.5
a = 1.5
so our exponential model is now (n(t) = 8.2 ±/1.5
(b) Number of bacteria after 26 hours:
n(t) = 8.2/1.5
put t = 26
26/1.5
n(t) = 8.2
n(t) = 8(165140-37) n(t) ≈ 1321123.
Calculate the number of bacteria per milliliter or gram of sample by multiplying the number of colonies by the dilution factor times the amount of sample added to the liquefied agar. The easiest way to measure bacterial growth is to place the sample on a clear glass plate under a microscope and count the number of bacterial cells.
Learn more about The bacterium here:- https://brainly.com/question/6941760
#SPJ4
The change in mass during a nuclear reaction is given
by which equation?
Select one:
A
B
C
D
Answers
Answer:c
Explanation:
c
How are the atoms of carbon alike and different?
Answers
PLZ GO TO MY PAGE ND ANSWER MY QUESTIONS BOUT CHEMISTRY DUE TMMR HELP ASAP
Answers
Answer:
Sorry mujhe nahi aata...
Hey can somebody please give me the answer to this.
Answers
Answer:
it is d or b hope this help
Answer:
A
Explanation:
3.
Find the correct element based on the information given (on the right side) and then drag
the element over.
Cesium
Magnesium
Bismuth
Bromine
Period 3 & Group 2A
Answer by dragging items here
Period & Group 7A
Answer by dragging items here
Period 6 & Group 1A
Answer by dragging items here
Period 6 & Group SA
Answer by dragging items here
Answers
Period 3 & Group 2A = Magnesium
Period & Group 7A = Bromine
Period 6 & Group 1A = Cesium
Period 6 & Group SA = Bismuth
What is groups and period in periodic table ?Groups - The horizontal row of the periodic table that represents an element's valence electron count.
Periods - The horizontal columns of the periodic table that represent an element's number of electron shells. Families: Compounds with comparable characteristics and the same number of valence electrons.
Elements in the periodic table can be divided into groups and eras. The periodic table is organised into horizontal rows for periods and vertical columns for groupings. As you proceed over a period or down a group, the atomic number rises.Learn more about Periodic table here:
https://brainly.com/question/15987580
#SPJ13
How does magma move within the mantle?
Answers
Magma is molten rock that exists beneath the Earth's surface, primarily in the mantle layer. The movement of magma within the mantle is driven by several factors, including heat, pressure, and gravity.
The mantle is a layer of the Earth's interior that extends from the bottom of the crust to the top of the core, and it is composed of solid rock. However, within the mantle, there are regions of the rock that are partially melted, forming magma. This magma is less dense than the surrounding solid rock and tends to rise towards the Earth's surface.
The movement of magma within the mantle is influenced by convection currents, which are caused by the heat generated by the Earth's core. These convection currents cause magma to rise towards the Earth's surface, where it may form volcanoes or other types of volcanic activity.
Additionally, the movement of tectonic plates can also play a role in the movement of magma within the mantle. As plates move apart, magma can rise up to fill the space between them, leading to the formation of new crust.
Overall, the movement of magma within the mantle is a complex process that is influenced by a variety of factors, including heat, pressure, gravity, and the movement of tectonic plates.
For charged particles, how does the strength of the interaction vary in each of the following cases? (Increase or decrease) a. The distance between the charges increases. b. The size of the charge decreases.
Answers
In each of the following situations, the intensity of the interaction differs for charged particles.
a. The distance between the charges increases. (decreases)
b. The size of the charge decreases. (increases)
a. The strength of the interaction between charged particles decreases as the distance between them increases. This is because the force between charged particles follows an inverse square law, which means that the force decreases with the square of the distance between the charges. Therefore, as the distance between the charges increases, the force between them decreases and the strength of the interaction decreases.
b. The strength of the interaction between charged particles increases as the size of the charge decreases. This is because the force between charged particles is directly proportional to the magnitude of the charge. Therefore, as the size of the charge decreases the force between the charged particles decreases and the strength of the interaction decreases.
Learn more about intensity of the interaction:
https://brainly.com/question/21272586
#SPJ11
consider+the+hydrate+of+m+g+c+o+3+⋅+5+h+2+o+.+what+is+the+mass+%+of+water+in+the+hydrate?
Answers
The mass percent of water in the hydrate MgCₒ₃⋅5H₂O is 55.9%.
To determine the mass percent of water in the hydrate, we need to compare the mass of water to the total mass of the hydrate and express it as a percentage. In the given formula, MgCₙO₃·5H₂O, the coefficient "5" indicates that there are 5 moles of water per mole of the compound MₓCₙO₃.
To calculate the mass percent of water, we consider the molar masses of water (H₂O) and the entire hydrate compound (MₓCₙO₃·5H₂O). Assuming the molar mass of water is 18.015 g/mol and the molar mass of the hydrate compound is M g/mol, the mass percent of water is:
(5 * 18.015 g/mol) / (M g/mol + 5 * 18.015 g/mol) * 100%
Simplifying the expression, we get:
(90.075 g) / (M + 90.075 g) * 100%
Therefore, the mass percent of water in the hydrate is 55.9%.
To learn more about molar mass here:
https://brainly.com/question/22997914
#SPJ4
the complete question is:
What is the mass % of water in the hydrate MgCₒ₃⋅5H₂O?
Part A
A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemical formula of this compound?
Note: You will need the periodic table for this question.
Express your answer as a chemical formula.
ΑΣΦ
x xь a b X
11. X
C1, PO
Submit Hinks My Answers Give Up Review Part
Incorrect; Try Again; 3 attempts remaining
Check that you have the proper order for the element symbols in your answer.
Provide Feedback Continue
Answers
A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. The chemical formula of this compound is PCl3O.
Based on the given information, the compound consists of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. To determine the chemical formula, we need to consider the symbols and the number of atoms for each element.
The chemical formula for the compound is determined by using the symbols of the elements and indicating the number of atoms using subscripts.
In this case, the compound contains one phosphorus (P) atom, so the symbol for phosphorus is simply "P." It also contains three chlorine (Cl) atoms, so the symbol for chlorine is "Cl" and the subscript is 3. Lastly, there is one oxygen (O) atom, so the symbol for oxygen is "O."
Putting it all together, the chemical formula for the compound is "PCl3O."
To learn more about chemical compounds, visit:
https://brainly.com/question/31268076
#SPJ11
Which element is more reactive, Almuminum (Al) or Chlorine (Cl)?
Answers
How many moon phases will we view in one week?
1
2
3
4
Answers
Answer:
4
Explanation:
The combustion of 1.00 mol of sucrose, C12H22O11, evolves 5.65 x 103 kJ of heat. A bomb calorimeter with a calorimeter constant of 1.23 kJ/oC contains 0.600 kg of water. How many grams of sucrose should be burned to raise the temperature of the calorimeter and its contents from 23.0oC to 50.0oC? (The calorimeter constant represents the heat capacity of the empty calorimeter.) The specific heat of water is 4.184 J/goC.
Answers
The mass in grams of sucrose that should be burned to raise the temperature of the calorimeter and its contents from 23.0°C to 50.0°C is 3753.5 grams.
What is the total heat absorbed by the calorimeter and its contents?The total heat absorbed by the calorimeter and its contents is calculated as follows:
Heat absorbed by the water = m*c*Δt
where;
m is mass = 0.600 kg or 600 g
c is the specific heat of water = 4.184 J/g°C
Δt is the temperature change = (50 - 23)°C or 27°C
Heat absorbed by the water = 600 g * 4.184 * 27
Heat absorbed by the water = 67.78 kJ
Heat absorbed by the calorimeter = c * Δt
where;
c is the heat capacity of the empty calorimeter = 1.23kJ/°C
Δt is the temperature change = (50 - 23)°C or 27°C
Heat absorbed by the calorimeter = 1.23 * 27
Heat absorbed by the calorimeter = 33.21 kJ
Total heat absorbed by the calorimeter and contents = 33.21 kJ + 67.78 kJ
Total heat absorbed by the calorimeter and contents = 100.99 kJ
1 mole of sucrose evolves 5.65 kJ of heat
Moles of sucrose required = 100.99/5.65
Moles of sucrose required = 17.874 moles
Mass of sucrose required = 17.874 moles * 210 g/mol
Mass of sucrose required = 3753.5 grams
Learn more about calorimeters at: https://brainly.com/question/2963957
#SPJ1
chemicals that change behavior or mood by directly affecting activity of the postsynaptic cell are referred to as t
Answers
Chemicals that change behavior or mood by directly affecting activity of the postsynaptic cell are referred to as neurotransmitter
In a chemical synapse the postsynaptic membrane is the membrane that receives a signal from the presynaptic cell and respond via depolarization or hyperpolarization and neurotransmitter play an important role in neural communication and they are chemical messengers that carry massages between nerve cell and other cell in your body and influencing everything from mood to involuntary movements and monoamine neurotransmitter such as dopamine are the most important neurotransmitter in the pathophysiology of mood disorders
Know more about postsynaptic cell
https://brainly.com/question/15257730
#SPJ4
Consider the following reaction:
2NO2(g) → 2NO(g) + O2(g) rate = k [NO2]^2 where k = 0.25 M-1 s-1
A rigid 1.00 L reaction vessel initially contains only 0.50 moles NO2. How long would it take to form 0.20 moles of O2? Report answer in seconds to 2 significant figures
Answers
To determine the time it takes to form 0.20 moles of O2, we need to first find the initial concentration of NO2 and the final concentration of NO2 after the reaction.
Initial concentration of NO2 = (0.50 moles) / (1.00 L) = 0.50 M
Reporting the answer to 2 significant figures, the time it takes to form 0.20 moles of O2 is 1.6 s.
To solve this problem, we need to use the rate law equation and the given values to calculate the time required to form 0.20 moles of O2. The rate law equation for this reaction is rate = k [NO2]^2.
First, we need to calculate the initial concentration of NO2 in the reaction vessel. Since the vessel contains 1.00 L of gas and 0.50 moles of NO2, the initial concentration of NO2 is 0.50 M.
Next, we can use the rate law equation to calculate the rate of the reaction at the initial concentration of NO2:
rate = k [NO2]^2
rate = 0.25 M-1 s-1 x (0.50 M)^2
rate = 0.0625 M/s
To form 0.20 moles of O2, we need to calculate the time required at this rate:
0.20 moles O2 / 2 moles NO2 = 0.10 moles NO2 used
0.10 moles NO2 / (0.0625 M/s) = 1.6 s
Therefore, it would take 1.6 seconds (reported to 2 significant figures) to form 0.20 moles of O2 in the reaction vessel.
To know more about significant figures visit:
https://brainly.com/question/23396760
#SPJ11
a man with mass 60kg climbs up staircase having 30 step each of 10cm height in 10seconds.Calculate his power.
Answers
Answer:
Power = Work done * time
P = (F * d) * t
P = (mg * d) * t
d = 1 step = 10 cm
30 steps = 300 cm
300 cm = 3m
P = (60*9.8 * 3) * 10
P = 17640 Watt
P = 1.764 Kilowatt
Ans: 60 watt
Explanation:
Solution
M=60kg, G=10
Distance=10*10/100
=1m
Time=10sec
Now,
W=M×G×H
=60×10×1
=600
P=w÷t
=600÷10
=60watt
Hence, the power of the man is 60watt
classify the following into physical and chemical changes a) drying of a shirt in the sun b) rising of hot air over a radiator c)rusting of iron d)mixing of sand with sugar e) digestion f) milk turns to curd g) dissolution of salt in water
Answers
Answer:
A. physical change
b. physical change
c. chemical change
d. chemical change
The pH of a solution can be determined using the formula pH=−log[H
+
], where H
+
is the hydrogen ion concentration in the solution. a. The hydrogen ion concentration of a particular brand of fruit juice is 0.0003 mol/L. Determine the pH of the solution, to the nearest tenth. ( 1 mark) b. A tomato has a pH of 3.0. Algebraically determine the hydrogen ion concentration of this solution. (2 marks)
Answers
(a)The pH of the fruit juice solution is approximately 3.5. (b) The hydrogen ion concentration of the tomato solution is 0.001 mol/L.
(b)The hydrogen ion concentration of the tomato solution is 0.001 mol/L.
(a). The hydrogen ion concentration of the fruit juice is 0.0003 mol/L. We can determine the pH of the solution using the formula pH = -log[H⁺].
pH = -log(0.0003)
pH ≈ -log(3 × 10⁻⁴)
Using a calculator, we can calculate the logarithm:
pH ≈ -(-3.5229) (rounded to the nearest tenth)
pH ≈ 3.5
Therefore, the pH of the fruit juice solution is approximately 3.5.
(b). A tomato has a pH of 3.0. We can determine the hydrogen ion concentration of this solution by rearranging the formula pH = -log[H⁺] to solve for [H⁺].
[H⁺] = 10(-pH)
[H⁺] = 10⁻³
[H⁺] = 0.001 mol/L
Therefore, the hydrogen ion concentration of the tomato solution is 0.001 mol/L.
To know more about hydrogen ion:
https://brainly.com/question/24673381
#SPJ4
According to the
graph, what happens
to the concentration
of A over time?
Concentration (M)
Reaction: 2A A₂
Time (sec)
A. It decreases and then levels out.
B. It decreases consistently.
C. It increases and then levels out.
D. It increases consistently.
Answers
The concentration of A decreases and then levels out. Option A
How does concentration of the reactant change?
In many chemical reactions, a reactant is consumed as the reaction progresses, leading to a decrease in its concentration over time. The reactant molecules are transformed into products, and as the reaction proceeds, the concentration of the reactant gradually diminishes.
At equilibrium, the concentrations of both reactants and products remain relatively constant over time, although they can coexist.
Learn more abaout reactant:https://brainly.com/question/30129541
#SPJ1
Long Life Floors is expected to pay an annual dividend of $4 a share and plans on increasing future dividends by 3 percent annually. The discount rate is 14 percent. What will the value of this stock be 5 years from today (in $ dollars)
Answers
The value of Long Life Floors stock 5 years from today will be approximately $27.67 per share.
To calculate the value of the stock, we can use the dividend discount model (DDM). The DDM takes into account the present value of expected future dividends. In this case, the expected future dividends can be calculated by increasing the current dividend of $4 by 3 percent annually for five years. So, the expected dividends in five years would be $4 * (1 + 0.03)^5 = $4.62 per share.
Using a discount rate of 14 percent, we can calculate the present value of the expected future dividends. The formula for calculating the present value is: Present Value = Future Value / (1 + Discount Rate)^n, where n is the number of periods (in this case, 5 years).
Using the formula, the present value of the expected future dividends is: $4.62 / (1 + 0.14)^5 = $2.376 per share.
Therefore, the value of Long Life Floors stock 5 years from today is approximately $2.376 per share.
learn more about DDM here
brainly.com/question/32132762
#SPJ11
The Sierra Nevada, a mountain range in California, is made largely of intrusive rock that was formed underground.Which process explains why rock that formed underground is now aboveground in the Sierra Nevada?
A.It was pushed upward by natural geologic processes.
B.It was left above the surface as the land around it sank.
C.It was weathered by the pressure from surrounding rock.
D.It was moved to the surface by volcanic eruptions
Answers
Answer: To me i think it’s “A” because one of the geological processes is
hydrothermal process which I think is also cooling down
The density of lead is 11.3 g/cm. What is the mass of a cube of lead with 10.0 cm on each edge? Show work please.
Answers
Mass of the lead cube :
\( \boxed{ \boxed{11.3 \: \: kg}}\)
Determine the mass in grams of a gold sample which occupies a volume of 16.39 mL? Gold has a
density of 19.3 g/mL.
a. 0.118 g
b. 0.316 g
c. 0.849 g
d. 1.18 g
e. 316 g
Answers
Answer: 316 g
Explanation:
Gold is given as a volume but the answer is asked for as a mass. Use the density of gold to find the mass of gold in 16.39 mL.
16.39 mL x (19.3 g/mL) = 316.327 g = 316 g
Note that the mL cancel and you are left with grams.
1. Determine the percentage composition of each of the following compounds:
a. NaClO b. Al 2 (SO 3 ) 3 c. C 2 H 5 COOH d. BeCl 2
2. Determine the percentage by mass of water in the hydrate CuSO 4 5H 2 O
Answers
The percentage by mass of water in the hydrate \(CuSO^{4}.5H^{2}O\) is 47.6%.
The percentage composition of each of the following compounds are
1.a. NaClO:
The molar mass of NaClO =
22.99 g/mol + 35.45 g/mol + 15.99 g/mol = 74.43 g/mol
Percentage composition of Na =
(22.99 g/mol / 74.43 g/mol) * 100 \ percent \ = 30.9percent
Percentage composition of Cl =
(35.45 g/mol / 74.43 g/mol) * 100percent \ = 47.6percent
Percentage composition of O =
(15.99 g/mol / 74.43 g/mol) * 100percent \ = 21.5percent
Therefore, the percentage composition of NaClO is approximately:
30.9% Na, 47.6% Cl, and 21.5% O.
1.b. \(Al^{2}(SO^{3})^{3}\):
The molar mass of \(Al^{2}(SO^{3})^{3}\) = \(2 * (26.98 g/mol) + 3 * (32.06 g/mol + 3 * 16.00 g/mol) = 342.14 g/mol\)
Percentage composition of Al =
\((2 * 26.98 g/mol / 342.14 g/mol) * 100 \ = 3.99\)%
Percentage composition of S =
\((3 * 32.06 g/mol / 342.14 g/mol) * 100 \ = 8.99\)%
Percentage composition of O =
\((9 * 16.00 g/mol / 342.14 g/mol) * 100 \ = 10.47\)%
Therefore, the percentage composition of \(Al^{2}(SO^{3})^{3}\) is approximately:
3.99% Al, 8.99% S, and 10.47% O.
1.c. \(C^{2}H^{5}COOH\):
The molar mass of \(C^{2}H^{5}COOH\) = \(2 * (12.01 g/mol) + 6 * (1.01 g/mol) + 12.01 g/mol + 16.00 g/mol = 60.05 g/mol\)
Percentage composition of C =
\((2 * 12.01 g/mol / 60.05 g/mol) * 100 \ = 40.0\)%
Percentage composition of H =
\((6 * 1.01 g/mol / 60.05 g/mol) * 100\ \ = 10.1\)%
Percentage composition of O = \((2 * 16.00 g/mol + 12.01 g/mol / 60.05 g/mol) * 100 \ = 49.9\)%
Therefore, the percentage composition of \(C^{2}H^{5}COOH\) is approximately:
40.0% C, 10.1% H, and 49.9% O.
1.d. \(BeCl^2\):
The molar mass of \(BeCl^2\) = \(9.01 g/mol + 2 * 35.45 g/mol = 79.91 g/mol\)
Percentage composition of Be = \((9.01 g/mol / 79.91 g/mol) * 100 \ = 11.3\)%
Percentage composition of Cl =
\((2 * 35.45 g/mol / 79.91 g/mol)* 100 \ = 88.7\)%
Therefore, the percentage composition of \(BeCl^2\) is approximately:
11.3% Be and 88.7% Cl.
2. \(CuSO^{4}.5H^{2}O\):
Mass of CuSO4.5H2O = 8.40 g
Mass of anhydrous \(CuSO^{4}\) = mass of \(CuSO^{4}.5H^{2}O\) - mass of water
Mass of water = mass of \(CuSO^{4}.5H^{2}O\) - mass of anhydrous CuSO4
\(= 8.40 g - 4.40 g= 4.00 g\)
So, the mass of water in the hydrate is 4.00 g.
To determine the percentage by mass of water in the hydrate, we need to divide the mass of water by the mass of the entire compound (\(CuSO^{4}.5H^{2}O\)) and multiply by 100%:
Percentage by mass of water = (mass of water/mass of \(CuSO^{4}.5H^{2}O\)) x 100%
\(= (4.00 g/8.40 g) * 100= 47.6\)%
Therefore, the percentage by mass of water in the hydrate \(CuSO^{4}.5H^{2}O\) is 47.6%.
For more question on mass click on
https://brainly.com/question/30390726
#SPJ11
pls watch episode 17 of Eureka Videos
https://youtu.be/aVIT3R9kx5s and answer the question
What does heat energy do to the molecules in a solid lattice-work pattern?
Answers
Answer:
The molecules are held closely together in a regular pattern called a lattice. If the ice is heated, the energy of the molecules increases. ... This is why liquid water is able to flow: the molecules have greater freedom to move than they had in the solid lattice.
Explanation:
I hope this helps and pls mark me brainliest :)
What happens to water at 1 atm pressure as the temperature is decreased from 10°C to –10°C?
Answers
Answer:
The water freezes and becomes solid ice
Answer:
See below
Explanation:
Water freezes at 0 C
so the water will give up heat to become 0 C water
then it will give up more heat to become 0 C ice
then it will give up even more heat to become -10 C ice
Write the common name of the α‑ketoacid resulting from the transamination of each amino acid.
Answers
The α‑ketoacid or the α‑ carboxylic acid are the organic compounds that are the characterize the presence of a keto group at the position of α- in carboxylic acid functional group.
The common name of the α‑ketoacid resulting from the transamination of each amino acid is given as follows :
1) alanine + α‑ketoglutarate ---> pyruvate
2) aspartate + α‑ketoglutarate ----> oxaloacetate
3) glutamate + α‑ketoglutarate -----> α‑ketoglutarate
4) phenylalanine + α‑ketoglutarate ------> phenylpyruvate
5) tyrosine + α‑ketoglutarate -----> p - hydroxyphenyl pyruvate
The amino acids are the organic compounds which contain both the groups the amino acid and the carboxylic acid groups.
To learn more about amino acid here
https://brainly.com/question/14171266
#SPJ4