The energy that the water in the bottle absorbed is obtained as 16800 J.
What is the specific heat capacity?The specific heat capacity of the water refers to the energy that is required to raise the temperature of 1Kg of the water by 1 degree.
Now we have the following;
mass (m) = 160 g
temperature change dT = ( 35oC - 10oC)
specific heat capacity (c)= 4.2 J/(g * oC).
Now;
H = mcdT
H = 160 g * 4.2 J/(g * oC) * ( 35oC - 10oC)
H = 16800 J
Learn more about specific heat capacity:https://brainly.com/question/1747943
#SPJ1
11 . A guest orders a drink that contains 4 1/2 ounces of 80-proof liquor. Approximately how many drinks does this beverage contain?
From the calculations that have been done, there are 3 drinks.
How many drinks are there?The information that we have been provided here is very important. We can obtain the amount of alcohol by looking at the fact that it contains 80-proof liquor.
This 80-proof liquor. is an equivalent of 40% alcohol this means that there is 1.5 ounce of distilled spirit.
Thus, the number of drinks there is;
4.5/1.5 = 3
Learn more about alcohol:https://brainly.com/question/24255571
#SPJ1
Why are environmental factors important to consider when assessing an individual’s health? a. environmental factors are the sole cause of health related issues. b. environmental factors are not important to consider, because they have no effect on an individual’s health. c. some health risks are increased by heredity, which manifest under certain environmental conditions. d. none of the above please select the best answer from the choices provided a b c d
c. Some health risks are increased by heredity, which manifest under certain environmental conditions.
The chance of contracting some diseases can arise in particular circumstances.The occurrence of certain diseases is influenced by certain environmental factors. Air pollution from a polluted environment increases the chance of allergic people or those with overactive immune systems acquiring respiratory conditions like asthma. A similar genetic flaw in melanin formation increases the risk of skin cancer in people who are exposed to UV rays. As a result, certain circumstances promote the development of disease.
Communities can lessen exposure to diseases and chemicals that have damaging effects on the body by focusing on environmental health. Environmental health treatments can improve everyone's quality of life, but they may be especially noticeable for people with pre-existing health conditions.
Learn more about environmental health here:
https://brainly.com/question/15119899
#SPJ4
A 345.21 g sample of a compound was found to contain 200.50 g of carbon and
144.71 g of hydrogen. What is the percentage composition of the compound?
Answer:
See below
Explanation:
carbon % = 200.5 / 345.21 * 100% = 58.1 %
hydrogen% = 144.71 / 345.21 *100% = 41.9 %
How many grams of calcium hydroxide is produced from 9.4 g of calcium chloride in this balanced
equation?
CaCl₂ + 2NaOH → 2NaCl + Ca(OH)₂
Answer:
6.27 [gr].
Explanation:
the required mass can be calculated as:
m[Ca(OH)₂]=M[Ca(OH)₂]*m[CaCl₂]/M[CaCl₂], where M - molar mass [gr/mol], m - mass [gr];
m[Ca(OH)₂]=9.4*74/111≈6.2(6) [gr].
Approximately 6.216 grams of calcium hydroxide (Ca(OH)₂₂) is produced from 9.4 grams of calcium chloride (CaCl₂) in the given balanced equation.
To determine the amount of calcium hydroxide (Ca(OH)₂) produced from 9.4 g of calcium chloride (CaCl₂) using the balanced equation, we need to use stoichiometry.
The balanced equation is:
CaCl₂ + 2NaOH --> 2NaCl + Ca(OH)₂
From the equation, we can see that 1 mole of CaCl₂ reacts with 1 mole of Ca(OH)₂. The molar mass of CaCl₂ is 111 g/mol, and the molar mass of Ca(OH)₂ is 74 g/mol.
To find the number of moles of CaCl₂, we divide the given mass by the molar mass:
Moles of CaCl₂ = 9.4 g / 111 g/mol ≈ 0.084 moles
Since the stoichiometric ratio between CaCl₂ and Ca(OH)₂ is 1:1, we know that 0.084 moles of CaCl₂ will produce 0.084 moles of Ca(OH)₂
To find the mass of Ca(OH)₂ produced, we multiply the number of moles by the molar mass:
Mass of Ca(OH)₂= 0.084 moles × 74 g/mol = 6.216 g
Therefore, approximately 6.216 grams of calcium hydroxide (Ca(OH)₂) is produced from 9.4 grams of calcium chloride (CaCl₂) in the given balanced equation.
To know more about balanced equation here
brainly.com/question/30937712
#SPJ2
If the diameter of an atom is 1x10^-8 cm, what is the diameter of the nucleus
If the diameter of an atom is 1 × 10⁻⁸ cm, the diameter of the nucleus is approximately 1 × 10⁻¹² cm, since the atom is mostly empty space.
What is the nucleus of an atom?The nucleus is the part of an atom that contains more than 99.9% of its mass, represented by protons and neutrons.
The diameter of an atom is 1 × 10⁻⁸ cm. The nucleus is about 10,000 times smaller than the atom. Thus, the diameter of the nucleus is:
d(nucleus) = d(atom) / 10,000
d(nucleus) = 1 × 10⁻⁸ cm / 10,000 = 1 × 10⁻¹² cm
If the diameter of an atom is 1 × 10⁻⁸ cm, the diameter of the nucleus is approximately 1 × 10⁻¹² cm, since the atom is mostly empty space.
Learn more about the atom's nucleus here: https://brainly.com/question/1494948
#SPJ1
Please help!! Thank you
Answer:
117.4 kJ (to 4 sf)
Explanation:
(141.3)(0.831) = 117.4 kJ (to 4 sf)
Forwarded
6. Organic compound with triple
bonds are referred to as ?
7. Organic compounds with - 0 - as
their functional group are referred to
as — .
8. This kind of organic compound
structure is referred to as
9. Organic compound with this
structure are referred to as - .
10. When one hydrogen atom is
removed from an alkane compound,
this process is referred to as - .
11. Addition of an halogen to an
organic compound is - .
Answer:
organic compounds with triple bonds are alkynes
Which is the safest way to view a solar eclipse?
with sunglasses
with a telescope
with your buddy
with a projector
[tex]\sf{\qquad\qquad\huge\underline{{\sf Answer}}}[/tex]
Which is the safest way to view a solar eclipse?
Answer: Is he B) With a telescope
Since when there is an eclipse you have to use a telescope because the other items are not correct.
I hope I've helped : )
How many hydrogen atoms are represented by (CH3)2CHOH?
Answer:
8 Hydrogen Atoms
Explanation:
The subscripts that are next to the coefficient (letter) indicates how much atoms the element/compound has.
So:
(CH3) × 2 ⇒ 6 hydrogen atoms
+ 1 from (CH) and another from (OH) ⇒ 8 atoms
determine the mass of the sample
We know that 1 kmol = 1000 mol, so 2.43 kmol = 2430 mol.
The atomic mass of sulfur is 32.06 amu.The atomic mass of oxygen is 15.9994 amu.This means the formula mass of sulfur trioxide is
[tex]32.06+3(15.9994)=80.0582 \text{ g/mol}[/tex]
Therefore, the mass is
[tex](80.0582)(2430)=\boxed{1.95 \times 10^{5} \text{ g (to 3 sf)}}[/tex]
What volume of water vapor would be produced from the combustion of 815.74 grams of propane (C3H8) with 1,006.29 grams of oxygen gas, under a pressure of 1.05 atm and a temperature of 350. degrees C? Given:
C3H8(g) + 5 O2(g) ---> 3 CO2(g) + 4 H2O(g)
(OR C3 H8 ("g") + 5 O2 ("g") right arrow 3 C O2 ("g") + 4 H2O ("g")
Do not type units with your answer
3940.2 is the volume of water vapour that would be produced from the combustion of 815.74 grams of propane ([tex]C_3H_8[/tex]) with 1,006.29 grams of oxygen gas, under a pressure of 1.05 atm and a temperature of 350. degrees C.
What is an ideal gas equation?The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Stoichiometric calculations:
[tex]C_3H_8(g) + 5 O_2(g)[/tex]→ [tex]3 CO_2(g) + 4 H_2O(g)[/tex]
From the equation of the reaction, the mole ratio of propane to oxygen is 1:5.
Mole of 815.74 grams of propane = [tex]\frac{ 815.74}{44.1 }[/tex]
Mole of 815.74 grams of propane = 18.49750567 moles
Mole of 1,006.29 grams of oxygen =[tex]\frac{ 1,006.29}{32 }[/tex]
Mole of 1,006.29 grams of oxygen = 31.4465625 moles
Going by the mole ratio, it appears propane is limiting while oxygen is in excess.
From the equation, 1 mole of propane produces 4 moles of water vapour. Thus, the equivalent mole of water vapour will be:
18.49750567 moles x 4 = 73.99 moles.
Using the ideal gas equation:
PV = nRT
v = (73.99 x 0.08206 x 623) ÷ 0.96
v = 3940.2
Hence, 3940.2 is the volume of water vapour that would be produced from the combustion of 815.74 grams of propane ([tex]C_3H_8[/tex]) with 1,006.29 grams of oxygen gas, under a pressure of 1.05 atm and a temperature of 350. degrees C.
Learn more about the ideal gas here:
https://brainly.com/question/27691721
#SPJ1
Question 1
One mole of C_2H_6OC
2
H
6
O has two moles of Carbon (C), six moles of Hydrogen (H) and one mole of Oxygen (O). How many moles of Hydrogen is in 0.2 moles of C_2H_6OC
2
H
6
O?
In the given compound, 0.2 mole of C₂H₆O will contain 1.2 moles of hydrogen.
chemical compoundIn the balanced chemical compound C₂H₆O, we can deduce the following;
1 mole of C₂H₆O contains 6 moles of hydrogen
0.2 mole of C₂H₆O = ?
= 0.2 x 6 moles = 1.2 moles of hydrogen
Thus, in the given compound, 0.2 mole of C₂H₆O will contain 1.2 moles of hydrogen.
Learn more about number of moles here: https://brainly.com/question/15356425
#SPJ1
Which is a true statement about an exterior angle of a triangle?
• A. It is formed by two segments that are not sides of the triangle.
B. It is formed by two segments that are sides of the triangle.
C. It forms a linear pair with one of the interior angles of the triangle.
D. It is complementary to one of the interior angles of the triangle.
SUBMIT
The only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.
What is a triangle?A triangle can be defined as a one of the plane shapes which has three sides and three angles
So therefore, the only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.
Learn more about triangles:
https://brainly.com/question/2217700
#SPJ1
Is it possible to use the subatomic particles as an energy source?
So first, let's get some background knowledge.
So, how does energy concentrate to become subatomic particles?
To answer it in the best way possible, we have to understand what is energy and what particles are.
The capacity to perform labor is energy. It cannot be made or taken away. All of it was made during the moment of the Big Bang. Since then, it has changed into one form or another or has been employed to produce particles. In their purest form, elementary particles are quantum fields that are waves in space-time carrying energy. These waves also contain four moments (energy, vector momentum, angular momentum, and charge), unless they are completely chargeless like photons. They are nothing more than energy, which is dependent on the wave's frequency (and has endowed with it some properties like charge and spin etc). Therefore, energy creates particles by destroying one or more particles and creating one or more other particles, by taking energy from them and transducing into the others, in a similar fashion to how particles came out of nothing but energy pumped into the space-time the first time (after the Big Bang). In quantum physics, the annihilation and creation operators are used to represent it. I'll use one as an illustration. formation of the duo. Once it collides with a heavy nucleus (i.e., one with a high atomic number, Z), a high-energy gamma ray with energy greater than the rest energies of a proton-electron pair experiences an electromagnetic interaction, which is mediated by a virtual photon, and generates an electron and positron pair. For instance, if the initial gamma ray had an energy of 20 MeV, the generation of the pair would take around 1.022 MeV (the total of the rest energies of the electron and positron), whereas the pair would share about 18.078 MeV in kinetic energy. As a result, the energy is simply converted from a boson with no charge, mass, or spin to two products with opposite charges, each having a mass of 0.511 MeV: a negatively charged spin 1/2 fermion and a positively charged spin 1/2 fermion (anti-particle of the first).
So to answer, let's complete this in a question, what subatomic particle causes electricity?
There are instances when the protons and electrons in an atom's outermost shells are not strongly attracted to one another. It is possible to force these electrons out of their orbits. They may move from one atom to another by exerting force. Electricity is made up of these moving electrons.
What is the percentage by mass of nickel (Ni) in nickel phosphate (Ni3(PO4)2)? A. 64.9% B. 38.2% C. 48.1% D. 23.1%
The mass percentage of nickel in nickel phosphate is 48.1%.
Percentage by mass of nickel in nickel phosphate is 48.1%.
Here we have nickel phosphate - Ni₃(PO₄)₂
In this formula there are-
3 Ni atoms , 2 P atoms and 8 O atoms
now, the molecular mass nickel phosphate is- = 3 × molar mass of Ni + 2 × molar mass of P + 8 × molar mass of O
Now we know that -
molar mass of Ni = 58.7u
molar mass of P = 31u
molar mass of O = 16
So that here-
molecular mass of nickel phosphate = 3 × 58.7 + 2 × 31 + 8 × 16 = 176.1 + 62 + 128 = 366.1u
Now, mass of nickel in nickel phosphate = 3 × 58.7 = 176.1u
And for mass percentage - mass percentage = ( mass of nickel / mass of nickel phosphate ) × 100 = (176.1 / 366.1) × 100 = 48.10 %
Hence we can conclude that the mass percentage of nickel in nickel phosphate came out to be 48.1 % after applying all the concepts.
Learn more about mass percentage here : https://brainly.com/question/26150306
#SPJ10
25cc of 5 % NaOH solution neutralized 30cc of h2sO4 solution. Whatis normality of H2SO4?
The normality of the H₂SO₄ that reacted with 25cc of 5 % NaOH solution is 1.1 N.
What is the molarity of 5% NaOH?The molarity of 5% NaOH is 1.32 M
25 cc of NaOH neutralized 30cc of H₂SO₄ solution.
Equation of reaction is given below:
2 NaOH + H₂SO₄ ---> Na₂SO₄ + 2 H₂OMolarity of H₂SO₄ = 1.32 x 1 x 25/(30 x 2) = 0.55 M
Normality = Molarity × moles of H⁺ ions per mole of acidmoles of H⁺ ions per mole of H₂SO₄ = 2
Normality of H₂SO₄ = 0.55 x 2 = 1.1 N
In conclusion, the normality of an acid is determined from the molarity and the moles of H⁺ ions per mole of acid.
Learn more about normality at: https://brainly.com/question/22817773
#SPJ1
If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, what temperature is the gas?
If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.
What is an ideal gas equation?The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
First, calculate the moles of the gas using the gas law,
PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.
Given data:
P= 5.2 atm
V= 500 mL =0.5 L
n=?
R= [tex]0.082057338 \;L \;atm \;K^{-1}mol^{-1}[/tex]
T=?
[tex]Moles = \frac{mass}{molar \;mass}[/tex]
[tex]Moles = \frac{45 g}{32}[/tex]
[tex]Moles = \frac{45 g}{32}[/tex]
Moles = 1.40625
Putting value in the given equation:
[tex]\frac{PV}{RT}=n[/tex]
[tex]1.40625= \frac{5.2 \;atm\; X \;0.5 \;L}{0.082057338 \;L \;atm \;K^{-1}mol^{-1} X T}[/tex]
T= 22.53167034 K= 22.53K
Hence, If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.
Learn more about the ideal gas here:
https://brainly.com/question/27691721
#SPJ1
It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5,000 years? (Note: 2 cm is a measurement so your final answer should have significant figure rules applied.) km
Answer:
0.1 kilometer
Explanation:
First, multiply 5,000 by two to get your cm after 5,000 years which is 10,000 cm and then divide by 100,000 to convert to kilometers which is 0.1.
can you change inorganic matter to organic matter?
Answer:
NO
Explanation:
No, the use of inorganic fertilizer can not increase / cannot contribute the organic matter in the soil.
Is it possible to use subatomic particles as an energy source?
Answer:
sabatomic particle also called elementary particle of any various self contained units of matter or energy that are fundamental constitution of all methods
A4. Lead oxides are environmental pollutants. (a) Name the source of these pollutants. (b) What is the major adverse effect on humans?. (c) State the measures that have been put in place in order to avoid this kind of pollution..... (d) (1) Explain the meaning of the term global warming. (ii) Name a pollutant which causes global warming.
Answer:
A
Explanation:
bc u have to think about it
Which of the following would be classified as an acid to the Arrhenius definition
Hydrochloric acid would be classified as an acid to the Arrhenius definition due to giving of hydrogen ions.
How acid is defined according to the Arrhenius definition?According to Arrhenius concept, hydrochloric acid is an acid which gives hydrogen ions in water while on the other hand, according to Bronsted-Lowry theory, hydrochloric acid is an acid that donates a proton to the water molecule.
So we can conclude that hydrochloric acid would be classified as an acid to the Arrhenius definition due to giving of hydrogen ions.
Learn more about acid here: https://brainly.com/question/25148363
#SPJ1
Any substance that increases the concentration of [tex]H^+[/tex] in aqueous solutions is Arrhenius's acid.
What are Arrhenius acids?Arrhenius define acids as substances with the chemical capacities to increase the concentration of hydrogen ion in aqueous solutions.
Thus, substances like HCl, HNO3, HBr, etc. would be considered an acid. This is because they ionize in aqueous solutions as follows:
HCl ---> [tex]H^+[/tex] + [tex]Cl^-[/tex]
[tex]HNO_3 --- > H^+ + NO_3^-[/tex]
[tex]HBr --- > H^+ + Br^-[/tex]
More on Arrhenius acids can be found here: https://brainly.com/question/9936252
#SPJ1
0.198 kg of ethyl alcohol, C2H5OH, in 0.500 L of solution, the concentration of ethyl alcohol in vodka .0
8.59 is the concentration of ethyl alcohol when 0.198 kg of ethyl alcohol.
Define the molarity of a solution.
Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.
Given data:
Volume of solution = 0.500 L
Given the mass of [tex]C_2H_5OH[/tex]= 0.198 kg= 198g
Molar mass of [tex]C_2H_5OH[/tex] = 46.07 g/mol
Moles of [tex]C_2H_5OH[/tex] = 4.297807684
[tex]Molality = \frac{Moles \;solute}{Volume \;of \;solution \;in \;litre}[/tex]
[tex]Molality = \frac{4.297807684}{0.500 L}[/tex]
Molality = 8.595615368 =8.59M
Hence, 8.59 is the concentration of ethyl alcohol when 0.198 kg of ethyl alcohol.
Learn more about Molarity here:
https://brainly.com/question/2817451
#SPJ1
One central them of Jesus' message was the kingdom of _______?
One central them of Jesus' message was the kingdom of God
What is the gospel of Jesus?The gospel of the Lord Jesus Christ is the ministration of God's words to sinners to repent so they can inherit the kingdom of God
The book of John says: For God so love the world that he gave his only begotten son to the world that whosoever believeth in him shall not perish but have an everlasting life
In conclusion, One major purpose of Jesus' message to humanity was to preach the gospel of the kingdom of God
Learn more about the gospel of Jesus Christ:
https://brainly.com/question/13540319
#SPJ1
How many moles of oxygen atoms are contained in 9.9 moles of KClO3 (potassium chlorate)?
Answer:
Explanation:
Comment
1 mole of KClO3 has 3 moles of oxygen
9.9 moles of KClO3 has x moles of oxygen
Formula
1/9.9 = 3/x Cross Multiply
Solution
1 / 9.9 = 3 / x
1*x = 9.9 * 3
x = 29.7 moles of oxygen
1 mole of oxygen has 6.02 * 10^23 atoms making up that 1 mole
29.7 moles of oxygen has 6.02*10^23 atoms making them up.
Answer
29.7 * 6.02 * 10^23 atoms
1.78 * 10^25 atoms
Calculate atoms in KClO_3
K=1Cl=1O=31 mol KCl contains 3mol O_2
9.9 mol contains
9.9(3)29.7mol O_2A rate constant obeys the Arrhenius equation, the factor A being 2.2 10^13 s-1 and the
activation energy being 150. kJ mol-1. What is the value of the rate constant at 227C, in
s-1?
4.743 x [tex]10^{-3}[/tex] s-1 is the value of the rate constant.
What is an Arrhenius equation?The Arrhenius equation describes the relationship between the rate of reaction and temperature for many physical and chemical reactions.
As per Arrhenius equation,
k = Ae-Ea÷RT
T = 227 = 500.15 K
R = 0.008314 kJ/K mol
Ea = 150 kJ/mol
Ea÷RT
= 150÷(0.008314 x 500.15)
= 36.073
k = Ae-36.073 = (2.2 x [tex]10^{13}[/tex] s-1) (2.156 x [tex]10-{16}[/tex])
k = 4.743 x [tex]10^{-3}[/tex] s-1
So, the correct answer is option d) i.e. 4.7 x [tex]10^{-3}[/tex] s-1
As per Arrhenius equation,
k = Ae-Ea/RT
T = 227 = 500.15 K
R = 0.008314 kJ/K mol
Ea = 150 kJ/mol
Ea÷RT = 150÷(0.008314 x 500.15) = 36.073
k = Ae-36.073 = (2.2 x [tex]10^{13}[/tex] s-1)(2.156 x [tex]10^{-16}[/tex])
k = 4.743 x [tex]10^{-3}[/tex] s-1
Hence, 4.743 x [tex]10^{-3}[/tex] s-1 is the value of the rate constant.
Learn more about the Arrhenius equation here:
https://brainly.com/question/17924702
#SPJ1
I need help with solution
[tex]molar \: mass = 48 \\ element = cadmium[/tex]
Answer:
A.) Titanium
Explanation:
The graph appears to be a mass spectrum. This graph describes the abundance of an element in a sample. The x-axis measures the mass of the element. As such, you can identify the element by determining which element has an atomic weight (g/mol) that matches the highest peak.
Titanium = 47.867 g/mol
Cadmium = 112.41 g/mol
Vanadium = 50.942 g/mol
The highest peak appears to be at 48. From these atomic weights, it seems that titanium is the element with the closest mass.
This graph is measuring an unknown element, so ideally, there would be only one peak. If this is a graph of one element, then why are their multiply smaller peaks? The smaller peaks are most likely isotopes or impurities.
between Au3+ and Au+ which has a larger radius and why
Answer:
Au+ has larger radius than Au3+ Atomic no. of au is 79 , to become au3+ it has to loose 3 electrons and to become au+ it has to loose one electron if it loose 3 electrons the nucleus force will bound the other electrons strongly and the orbital radius will become small as compared to the parent atomWhat is the molality of a solution composed of 342 moles of sugar (C12H22O11) dissolved in 171 kilograms of water (H20)?
The molality of the solution which is composed of 342 moles of sugar were dissolved in 171 kilograms of water is 0.002 mol/g.
To calculate the molality of a solution, you need to divide the number of moles of solute by the mass of the solvent (in kilograms).
Given:
Number of moles of sugar (C₁₂H₂₂O₁₁) = 342 moles
Mass of water (H₂O) = 171 kilograms
Molality (m) = moles of solute/mass of solvent in kg
First, convert the mass of water from kilograms to grams:
Mass of water = 171 kilograms × 1000 grams/kilogram
= 171,000 grams
Now we can calculate the molality:
Molality = 342 moles / 171,000 grams
However, before we proceed, we consider the molecular weight of sugar (C₁₂H₂₂O₁₁) to convert from moles to grams.
The molecular weight of sugar can be calculated as follows:
12 carbon atoms × 12.01 g/mol = 144.12 g/mol
22 hydrogen atoms × 1.01 g/mol = 22.22 g/mol
11 oxygen atoms × 16.00 g/mol = 176.00 g/mol
Adding up the individual atomic masses
144.12 g/mol + 22.22 g/mol + 176.00 g/mol
= 342.34 g/mol
Now we calculate the molality:
Molality = 342 moles / 171,000 grams
= 0.002 mol/g
Therefore, the molality of the solution composed of 342 moles of sugar dissolved in 171 kilograms of water is 0.002 mol/g.
To know more about molality here
https://brainly.com/question/29808886
#SPJ2
When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. How many grams of sodium sulfide are formed if 1.50 g of hydrogen sulfide is bubbled into a solution containing 1.65 g of sodium hydroxide, assuming that the limiting reagent is completely consumed ?
Answer:
1.61 g Na₂S
Explanation:
To find the mass of sodium sulfide (Na₂S) generated from hydrogen sulfide (H₂S) and sodium hydroxide (NaOH), you need to (1) construct the balanced chemical equation, then (2) calculate the molar masses of each molecule involved, then (3) convert grams of each reagent to grams of the product (via the molar masses and mole-to-mole ratio from equation coefficients), and then (4) determine the limiting reagent and final answer. It is important to arrange the conversions in a way that allows for the cancellation of units (the desired unit should be in the numerator).
(Step 1)
The unbalanced equation:
H₂S + NaOH ---> Na₂S + H₂O
Reactants: 3 hydrogen, 1 sulfur, 1 sodium, 1 oxygen
Products: 2 hydrogen, 1 sulfur, 2 sodium, 1 oxygen
The balanced equation:
H₂S + 2 NaOH ---> Na₂S + 2 H₂O
Reactants: 4 hydrogen, 1 sulfur, 2 sodium 2 oxygen
Products: 4 hydrogen, 1 sulfur, 2 sodium, 4 oxygen
(Step 2)
Molar Mass (H₂S): 2(1.008 g/mol) + 32.065 g/mol
Molar Mass (H₂S): 34.081 g/mol
Molar Mass (NaOH): 22.990 g/mol + 15.998 g/mol + 1.008 g/mol
Molar Mass (NaOH): 39.998 g/mol
Molar Mass (Na₂S): 2(22.990 g/mol) + 32.065 g/mol
Molar Mass (Na₂S): 78.045 g/mol
(Step 3)
1.50 g H₂S 1 mole 1 mole Na₂S 78.045 g
----------------- x ---------------- x -------------------- x ----------------- =
34.081 g 1 mole H₂S 1 mole
= 3.43 g Na₂S
1.65 g NaOH 1 mole 1 mole Na₂S 78.045 g
-------------------- x ---------------- x ----------------------- x ---------------- =
39.998 g 2 moles NaOH 1 mole
= 1.61 g Na₂S
(Step 4)
Because NaOH generates less product, it will run out before all of the H₂S is used. This makes NaOH the limiting reagent and the final answer 1.61 grams Na₂S.