Answer:
76.1g
Explanation:
The balanced equation for this reaction is as follows:
3NaOH + AlCl3 --> Al(OH)3 + 3NaCI
From the above equation, it can be observed that 1 mole of AlCl3 is needed to produce 3 moles of NaCl.
Using the formula below, we convert the mass of NaCl to moles;
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
mole = 100/58.5
mole = 1.71mol of NaCl
Since 1 mole of AlCl3 is needed to produce 3 moles of NaCl.
Then 1.71 moles of NaCl will be produced by 1.71/3 = 0.57mol of AlCl3
Molar mass of AlCl3 = 27 + 35.5(3)
= 27 + 106.5
= 133.5g/mol
Mole = mass/molar mass
Mass = molar mass × mole
Mass = 133.5 × 0.57
Mass = 76.1g
Gases at high temperatures and low pressures behave like ideal gases. True or False?
Answer:
Very true
Explanation:
If the final mass of the system is 120g, what was the percent yield of the reaction?
Answer:
Sorry for the wrong answer plz
99% was the percent yield of the reaction. So, the correct option is A.
What is Percent yield?Percent yield is defined as the percentage ratio of the actual yield to the theoretical yield. It is a measure of the amount of moles of product formed in relation to the reactant obtained in a chemical reaction, expressed as a percentage.
For percent yield, we have to first find the number of moles.
1 Mg(S) + 2 HCl(Aq) → 1 MgCl2(Aq) + 1 H2(G)
Mole of Mg (s)= Mass of Mg/ Molar mass
=48/24= 2 moles
Moles of HCl= 73/36.5= 2moles
So, 1 mole of Mg reacts with 2 moles of HCl as per the equation which means HCl is the limiting reagent. Mg will act as excess reagent so only 1 mole of Mg will react while the unreacted Mg will be 24g i.e. 1 mole.
The product which is experimental= 120-24= 96g
Theoretical product formed= 1mole of [tex]MgCl_2[/tex]+ 1 mole of HCl= 95+2= 97gm/mole
Percentage Yield = (experimental Yield / Theoretical Yield) × 100 %
= (96/97)*100 = 98.96% which is approx. 99%
Thus, 99% was the percent yield of the reaction. So, the correct option is A.
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Your question is incomplete, most probably the complete question is:
The Following Reaction Is Carried Out:
1 Mg(S) + 2 HCl(Aq) → 1 MgCl2(Aq) + 1 H2(G)
The Initial Masses Of The Uncombined Reactants appear below:
Mass of magnesium- 48g
mass of hydrochloric acid= 73g
The reactants are combined and the final mass of the system is determined. If the final mass of the system is 120g, what was the percent yield of the reaction?
99%50%1%25%Convert 100.6 degrees F to
degrees C.
[
100.6 F is around 38.1 C!
Find the pH of a solution with a [H+] of 0.045M.
Answer:
1.35Explanation:
The pH of a solution can be found by using the formula
[tex]pH = - log ([ {H}^{+} ])[/tex]
From the question
[H+] = 0.045 M
We have
[tex]pH = - log(0.045) \\ = 1.346787...[/tex]
We have the final answer as
1.35Hope this helps you
Answer:
1.35
Explanation:
Which of these is true for a fission reaction?
A. it is an endothermic reaction
B.a heavy nucleus splits into two smaller nuclei
C.two light nuclei combine to form a single heavier nucleus
D.it is an interaction between valence electrons of a atom.
Answer:
Explanation:
The answer is B heavy nucleus splits into two smaller nuclei
Name this compound according to IUPAC nomenclature rules.
A) nitrogen oxide
B) nitrogen oxygen
C) nitrogen monoxide
D) Mononitrogen monoxide
Answer:
B: nitrogen oxygen
Explanation:
Hope it helps you thanks!!
At 15 mph, how long does it take to travel 15 miles?
Answer:
1 hour
Explanation:
Travelling at 15 miles per hour will get take 1 hour to travel 15 miles.
Please and thank you in advance. Due today
Answer:
Sorry I really don't know but can you help with one of my question I posted please thanks.
Chemistry help!
Zoom in to see better!!
Answer:
2.5 moles of Al
Explanation:
We'll begin by calculating the number of mole in 127 g of Al₂O₃. This can be obtained as follow:
Mass of Al₂O₃ = 127 g
Molar mass of Al₂O₃ = 101.961 g/mol
Mole of Al₂O₃ =?
Mole = mass / molar mass
Mole of Al₂O₃ = 127 / 101.961
Mole of Al₂O₃ = 1.25 mole
Finally, we shall determine the number of mole of Al that reacted. This can be obtained as follow:
4Al + 3O₂ —> 2Al₂O₃
From the balanced equation above,
4 moles of Al reacted to produce 2 moles of Al₂O₃.
Therefore, Xmol of Al will react to produce 1.25 moles of Al₂O₃ i.e
Xmol of Al = (1.25 × 4)/2
Xmol of Al = 2.5 moles.
Thus, 2.5 moles of Al is needed for the reaction.
What design element of an astronaut's spacesuits protects him or her from micrometeoroids, which are tiny bits of space debris travelling at high speeds?
Answer:
Tough outer shell
Explanation:
Three types of space suits based on their purpose are IVA (Intravehicular activity), EVA (extravehicular activity), and IEVA (intra/extravehicular activity)
Space suits have an outer layer known as the Integrated Thermal Micrometeoroid Garment also known as the TMG or ITMG
The functions of the TMG includes the provision of an insulation medium to the wearer of the suit thereby preventing loss of heat and keeping the wearer warm, protect the wearer from solar radiation which are harmful as well as from Micrometeoroid and debris orbiting in space known as MMOD
The outermost layer of the EMU TMG suits is white Ortho-Fabric that consists of Nomex, Kevlar and Gore-Tex, making it fire resistant, very strong and very tough, and water proof as well as breathable.
PLS HELP
Explain why Organic farming is more energy efficient.
Many common substances may be classified as acids or bases. Which of
the following statements best describes the materials shown?*
Answer:
Bleach is more basic while human blood is slightly basic
Explanation:
The higher the number on the pH scale, the more basic. Therefore, since bleach's number is higher than the blood, it is more basic.
How many atoms are there in 6.8g of S?
A container of oxygen with a volume of 60 L is heated from 300 K to 400 k, What is the new volume?
Answer:
80L
Explanation:
V1/T1 = V2/T2
V2 = V1 T2/T1
T1 = 300K
V1 = 60L
T2 = 400K
V2 = ?
V2 = V1 T2/T1
V2 = (60L)(400K) / (300K)
V2 = 80L
Al2(SO4)3+Mg(NO3)2⟶ What would be the product(s) of this reaction? *These are NOT balanced, just look for the correct products*
Answer:
[tex]Al_2(SO_4)_3+3Mg(NO_3)_2\rightarrow 2Al(NO_3)_3+3MgSO_4[/tex]
Explanation:
Hello there!
In this case, for the given reactants side, we infer this is a double replacement reaction because all the cations and anions are switched around as a result of the chemical change, we infer that the products side include aluminum with nitrate and magnesium with sulfate as shown below:
[tex]Al_2(SO_4)_3+Mg(NO_3)_2\rightarrow Al(NO_3)_3+MgSO_4[/tex]
However, we need to balance since unequal number of atoms are present at both sides, thus, we do that as shown below:
[tex]Al_2(SO_4)_3+3Mg(NO_3)_2\rightarrow 2Al(NO_3)_3+3MgSO_4[/tex]
Thus, we make 6 Al atoms, 3 S atoms, 3 Mg atoms and 30 O atoms on each side in agreement with the law of conservation of mass.
Regards!
Please Help!! Please, this is due in a couple of minutes, please help
If 8.51×10-2 moles of SO3(g), 0.210 moles of SO2, and 0.354 moles of O2 are at equilibrium in a 15.4 L container at 1.25×103 K, the value of the equilibrium constant, K, is ____
Answer: The value of equilibrium constant, K, is [tex]7.74 \times 10^{-4}[/tex].
Explanation:
The reaction equation is as follows.
[tex]2SO_{3}(g) \rightleftharpoons 2SO_{2}(g) + O_{2}(g)[/tex]
Now, the expression for equilibrium constant of this reaction is as follows.
[tex]K = \frac{[SO_{2}]^{2}[O_{2}]}{[SO_{3}]^{2}}[/tex]
Substitute the given values into above expression as follows.
[tex]K = \frac{[SO_{2}]^{2}[O_{2}]}{[SO_{3}]^{2}}\\= \frac{(\frac{0.210}{15.4})^{2} \times (\frac{0.354}{15.4})}{(\frac{8.51 \times 10^{-2}}{15.4})}\\= 7.74 \times 10^{-4}[/tex]
Thus, we can conclude that the value of equilibrium constant, K, is [tex]7.74 \times 10^{-4}[/tex].
Three students measured the volumes of a pebble whose accepted volume is 2.71 cm3. Which list represents both accurate and precise:
A: 2.60 mL, 2.60 mL, 2.59 mL, 2.59 mL
B: 2.70 mL, 2.69 mL, 2.71 mL, 270 mL
C: 2.75 mL, 2.74 mL, 2.64 mL, 2.71 mL
D: A and B
Answer:
C
Explanation:
Work out the relative formula mass of ammonium nitrate, NH4NO3.
Relative atomic masses: H 1; N 14; O 16.
...........................................................................................................................
...........................................................................................................................
Relative formula mass of ammonium nitrate = ...............................
Answer:
The relative molecular mass of ammonium nitrate is 80 gm
Explanation:
[tex]M_{NH4NO3}[/tex] = 14 + (4 × 1) + 14 + (16 × 3) = 80 (gm)
How are ionic bonds formed?
Multiple choice question.
A)
loss of electrons by atoms
B)
sharing of electrons between atoms
C)
electrostatic forces between ions
D)
gain of electrons by atoms
Answer:
c
Explanation:
Answer:
Same type of question from quizlet
But the answer is C
I hope you got it right :)
At what temperature will uranium hexafluoride , the densest gas known have the same average speed as a molecule of the lightest gas, hydrogen at 37 degree celcius
Answer:
the required temperature of uranium hexafluoride is 54156.25 K
Explanation:
Given the data in the question;
We know that average speed is;
u = [tex][ 3RT / MM ]^{1/2[/tex] ----------- let this be equation 1
where MM is the molar mass
T is temperature
R is universal gas constant and u is the average speed.
First we get the average speed of H₂
[tex]U_{H}[/tex]₂ = [tex][ 3RT_H_2 / MM_H_2 ]^{1/2[/tex] ------ let this be equation 2
Next is the average speed of UF₆
[tex]U_{UF[/tex]₆ = [tex][ 3RT_{UF_6} / MM_{UF_6} ]^{1/2[/tex] ------ let this be equation 3
given that; both have the same average speed, equation 2 = equation 3;
[tex][ 3RT_H_2 / MM_H_2 ]^{1/2[/tex] = [tex][ 3RT_{UF_6} / MM_{UF_6} ]^{1/2[/tex]
we multiply both sides by 1/3R and also square both sides.
[tex][ T_H_2 / MM_H_2 ][/tex] = [tex][ T_{UF_6} / MM_{UF_6} ][/tex]
given that; temperature of hydrogen T[tex]_{H[/tex]₂ = 37°C = ( 37 + 273.15)K = 310.15 K
we know that Molar mass of H₂; MM[tex]_{H[/tex]₂ = 2.016 g/mol
and molar mass of UF₆; MM[tex]_{UF[/tex]₆ = 352.02 g/mol
so we substitute
[ 310.15 K / 2.016 g/mol ] = [ T[tex]_{UF[/tex]₆ / 352.02 g/mol ]
T[tex]_{UF[/tex]₆ = [ 352.02 g/mol × 310.15 K ] / 2.016 g/mol
T[tex]_{UF[/tex]₆ = 109179.003 K/ 2.016
T[tex]_{UF[/tex]₆ = 54156.25 K
Therefore, the required temperature of uranium hexafluoride is 54156.25 K
Which of the following equations is balanced?
A. 2H2 + O2 → 4H2O
B. 4Na + O2 → 2Na2O
C. Fe2O3 + H2 → 2Fe + 3H2O
D. CH4 + O2 → CO2 + H2O
Answer:
B. 4Na + O2 → 2Na2O
Explanation:
Got it right on the test :)
For balanced equation the mass of reactant is exactly equal to the mass of product. atoms of reactant equal to the atoms of product is called as balanced equation.
What is balanced equation ?
The law of conservation of mass, which states that "the total mass of all the products of reaction in a chemical reaction is equal to the total mass of all the reactants," is satisfied by balancing chemical equations.
A balanced chemical equation, in which the masses of the reactants and products are equal, contains the same amount of atoms of each element on both sides of the equation.
4Na + O₂ ⇒ 2Na₂O₂
In this reaction in reactant there are four number of sodium atom and in product also four number of sodium atom. Similarly total number of oxygen at reactant is equal to the total number of oxygen at product.
Thus, option B is correct.
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A gas has a volume of 25 ml, at a pressure of 1 atmosphere (1 atm). Increase the volume to 125 ml and the temperature remains constant. What is the new pressure? please help
Explanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2 \\[/tex]
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{25 \times 1}{125} = \frac{25}{125} = \frac{1}{5} = 0.2 \\ [/tex]
We have the final answer as
0.2 atmHope this helps you
After a hurricane, plant A began to do poorly and plant B began to thrive. After several large rainstorms, plant A began to thrive and plant B began to do poorly. What hypothesis is best supported by this information?
Answer:Plant A does best in high salinity water and soil, and plant B does best in low salinity water and soil.
Explanation: Because plant A in a hurricane dost bad bot Plant B doest well
Answer:
Plant A does best in high salinity water and soil, and plant B does best in low salinity water and soil
Explanation:
This is due to hurricanes decreasing salinity of water while Rainstorms increase salinity.
How much heat is required to raise the temperature of a sample of copper from 0.0°C to 55.0°C, if its specific heat is 0.384 J/g°C and its mass is 10.00 g? Group of answer choices 351.4 2110 211.2 3.54
Answer:
211.2 J
Explanation:
Applying
Q = cm(t₁-t₂)............... Equation 1
Where Q = Amount of heat, c = specific heat capacity of copper, m = mass of copper, t₁ = initial temperature, t₂ = final temperature.
From the question,
Given: c = 0.384 J/g°C, m = 10 g, t₁ = 0°C, t₂ = 55°C
Substitute these value into equation 1
Q = 0.384×10×(55-0)
Q = 0.384×10×55
Q = 211.2 J
44.0L of O2 react with excess Sulfur dioxide gas. All gases are kept at the same temperature, pressure, and volume. What will be the theoretical yield of Sulfur trioxide gas in Liters?
Answer:
The theoretical yield of sulfur trioxide is 88.0 Litres
Explanation:
The chemical reaction occurring between oxygen and sulfur dioxide is given in the chemical equation below :
2SO₂ + O₂ ----> 2SO₃
From the equation of reaction, 2 moles of sulfur dioxide reacts with 1 mole of oxygen to produce 2 moles of sulfur trioxide.
Volume of 1 mole of a gas at STP is 22.4 L
Number of moles of gas in 44.0 L = 44.0/22.4 moles
1 mole of oxygen reacts with 2 moles sulfur dioxide to produce 2 moles of sulfur trioxide;
44/22.4 moles of oxygen will react with excess sulfur dioxide to produce 2 × 44/22.4 moles of sulfur trioxide = 88/22.4 moles of sulfur trioxide
88/22.4 moles of sulfur trioxide will have a volume of 88/22.4 × 22.4 Litres = 88.0 Litres
Therefore, the theoretical yield of sulfur trioxide is 88.0 Litres
Is this equation right?
Answer:
no
Explanation:
because the characters are invalid
Answer:
no
Explanation:
because they are not valid
A volume of 3.0 L of air is warmed from 50 degrees celsius to 100 degrees celsius. What is the new volume if the pressure remains constant?
Answer:
3.45 L
Explanation:
Temperature and volume are linearly related (when one increases or decreases, so does the other).
Convert the temperature to Kelvin:
50 °C = 323 K
100 °C = 373 K
To find the rate of change, divide 373 by 323 to get roughly 1.15
Multiply the amount of liters by this factor to get your answer
A solution is made by dissolving 4.8 moles of salt in 1.6L of solution. What is the molarity
of the solution?
Answer:
3M
Explanation:
moles ÷ liters = molarity
4.8 ÷ 1.6 = 3M
8. Which of the following is not considered to be a unicellular organism? O A. Flea O B. Euglena C. Amoeba O D. Paramecium
less energy was entering Earth's
2. When more energy enters than exits the Earth system, what happens to temperatures on Earth?
(select one)
The temperatures on Earth increase
The temperatures on Earth decrease
The temperatures on Earth do not change
「ロロロ
Answer:
The temperatures on Earth increase
Explanation:
more energy results in more heat.