Answer:
2.08g
Explanation:
Given parameters:
Volume of CuSO₄ = 3.29mL
Molarity = 4M
Unknown:
Mass of CuSO₄ = ?
Solution:
Let us find the number of moles from the given parameters first;
Number of moles = molarity x volume
1000mL = 1L
Express the volume of the given CuSO₄ in L = 3.29 x 10⁻³L
Number of moles = 4 x 3.29 x 10⁻³ = 0.013mol
So;
Mass of CuSO₄ = number of moles x molar mass
Molar mass of CuSO₄ = 63.6 + 32 + 4(16) = 159.6g/mol
Mass of CuSO₄ = 0.013mol x 159.6g/mol
Mass of CuSO₄ = 2.08g
a
Select the correct answer.
In which of these examples does chemical energy change to electrical energy?
A. digesting food
B. photosynthesis
O C. respiration
D. using a battery
Reset
Next
Answer:
D. Using a battery
Answer:
I hope this helps
Explanation:
How many different types of elements are there in acetone C3H6O?
Answer:
3
Explanation:
Answer:
10
Explanation:
if you know the answer to any of these pls help out I'll give brainiest. also a lot of points
Answer:
5. Divergent boundaries. Divergent boundaries can make underwater ocean trenches.
pls answer and i will mark u brainliest
question:- A precious metal used in jewelry and found in a pure form in nature is:
options are :-
a. Silver
b. platinum
c. Zinc
d. copper
Which is the best definition of nonpolar covalent bond?
Answer:
It is one of the covalent bonds in which the electrons are shared equally; therefore, dipole moment exists between the atoms in a molecule and there is no charge separation between the atoms in a molecule.
Answer: A covalent bond in which the electrons are shared equally
Explanation:
A P E X
which is not possible sign of chemical change
A:color change
B:light given off
C:heat given off
D:a change of state
Answer:
A. color change
Explanation:
changing the color of a metal does not change its physical properties.
hope it helps.
I want someone he is good in chemistry
Answer:
.I can help you.....Explanation:
am good atmoles
bonding
balancing equations
and set ups
what is one beneift of using scientific notation instead of regular notation
Answer:
its shorter than a regular one
Explanation:
the only reason is simply because it is shorter
For an investigation a student poured a blue solution of CuSO4 into a beaker. The student placed a shiny silver colored strip of zinc metal in the solution and observed the changes, The student inferred that a chemical reaction occurred. What evidence supports this inference?
Answer:
It is the second answer; A dark solid formed on the zinc.
Explanation:
This is the correct answer because when a solid is formed it is called a precipitate, which is commonly known as a chemical reaction.
The evidence that supports the student's inference is a dark solid formed on the zinc.
Chemical reaction of zinc metal with CuSO4When zinc is added to copper sulphate (CuSO4) solution, due to more reactivity of zinc, copper is replaced by zinc and forms zinc sulphate precipate.
Thus, the student is correct, there will be a chemical reatcion between the zinc and copper sulphate (CuSO4) solution, producing a dark solid substance.
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The two alternative chair conformations of cis-1-bromo-2-methylcyclohexane differ in their Gibbs free energy. Using the data for ΔG (Axial-Equatorial) for monosubstituted cyclohexanes at room temperature (25ºC): Axial → Equatorial Group ΔG° (kJ/mol) Group ΔG° (kJ/mol) -0.8 -5.9 -2.4 -7.3 -3.9 1,2-gauche 3.8 Calculate the absolute value of the difference in the Gibbs free energy between the alternative chair conformations. kJ/mol Which group in this compound is in axial position in the energetically preferred chair conformation? _______
Answer:
a.) 4.9kj/mol
b.) -Br group
Explanation:
first all of your question did not make mention of the groups in the table.
here it is:-
axial group ΔG°(kj/mol) group ΔG°kj/mol
CN -O.8 NH₂ -5.9
Br -2.4 CH₃ -7.3
OH -3.9 1,2-gauche 3.8
The 6 axial groups are bonded one on each carbon and also they are parallel and also alternate from up to bottom.
a.)
to get the absolute ΔG;
ΔG = -2.4-(-7.3)
= -2.4+7.3
= 4.9KJ/MOL
b.)
the axial group in this compound which is in the axial position in the energetically preferred chain conformation is the -Br group
Please check attachment for diagram
What is the relationship between density and viscosity?
Answer:There is no relationship between the viscosity and density of a fluid. While viscosity is the thickness or thinness of a fluid, density refers to the space between its particles. However, both properties are affected by temperature. When a fluid is heated, its particles move far apart, and it also becomes less viscous.
write formulas: a) 3 nitrogen atoms, b) 2 phosphorus molecules // help please with these
Explanation:
a)3 N
b)2 P4
hope it will help u
write the unit of electric charge
Answer: the electric charge is the atomic number
Which substance cannot be broken down by chemical changes? Magnesium Hydroxide Carbon Dioxide b O Ammonia Iron
Answer:
Iron
Explanation:
The only substance that cannot be broken down by a chemical change is Iron.
Iron is an element and elements are made up of atoms. Atoms are the smallest indivisible particles that takes part in chemical reactions.
Other choices are compounds. Compounds are made by combining atoms together through the loss, gain or sharing of electrons. This interaction creates bonds between two or more species. But for substances made up of atoms alone, no bonds are formed and hence, they cannot be further broken down.Suppose you mix Na2SO4 and KCl solutions according to the given equation.
Na2SO4 (aq) + 2 KCl(aq) + 2 NaCl(aq) + K2SO4 (aq)
What evidence of a reaction do you expect to see?
Select one:
A precipitate should form.
A gas should form.
Water should form.
Ο Ο
No reaction should occur.
Answer:
No reaction should occur
Explanation:
Water cannnot be made from the components
Nothing will be released as a gas
Both products are soluible in water therefore will not form a precipitate.
If I mix a solution of Na2SO4 and KCl, no reaction should occur.
Whether or not, a reaction occurs when two substances are mixed depends on the respective positions of the substances in the electrochemical series.
Now, we are expecting the reaction; Na2SO4 (aq) + 2 KCl(aq) + 2 NaCl(aq) + K2SO4 (aq) to occur. The big question is, between sodium and potassium, which is higher in the electrochemical series?
A little look into the image attached shows that potassium is higher than sodium in the series so the reaction is possible.
However, the both products are aqueous, they are both soluble in water hence no visible reaction occurs.
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what are the coefficients for the reaction _Cl2O5+_H2O>_HCIO3 once it is balanced
Answer:
1.9472857e+56
Explanation: Ask Google
Which statement best describes the nuclear model of the atom. A) negative charges dispersed in a positively charged cloud B) positive charges dispersed in a negatively charged cloud C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud D) small, dense negative nucleus surrounded by a diffuse positively charged cloud
Answer:
D.) small, dense negative nucleus surrounded by a diffuse positively charged cloud
Explanation:
I am not 100% sure but the reason I think this is the answer is because Protons and Neutrons are in the nucleus. Protons being positively charged and neutrons being negatively charged. Again, I do not know for sure, but I think D is the answer.
The statement that best describes the nuclear model of the atom is C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud.
The atom is made up of 3 kinds of particles: protons, neutrons and electrons.
Protons (positive charge) and neutrons (zero charge) are in the nucleus, which concentrates 99% of the mass of the atom in 1% of the space. This is why is it positive and very dense.
Electrons (negative charges) are orbiting the nucleus in diffuse negatively charged clouds known as orbitals.
The statement that best describes the nuclear model of the atom is C) small, dense positive nucleus surrounded by a diffuse negatively charged cloud.
You can learn more about the nuclear model of the atom here: https://brainly.com/question/21884993?referrer=searchResults
At STP, a 50.-gram sample of H2O() and a100.-gram sample of H2O() have
Answer:
2
Explanation:
because it same volume
What is the chemical name for LiC2H3O2 or C2H3O2Li
Answer:
AWAWDWDAD
Explanation:
What symbol is used to separate the products from each other or the reactants from each other in a chemical reaction?
an arrow pointing to the left
an equal sign
an arrow pointing to the right
a plus sign
Answer:
a plus sign: +
Explanation:
a plus sign is used to separate one reactant or product from another
Answer:
(Chemical Formulas test)
1.Which formula contains a metal and a nonmetal?
answer:(MGO)
2.Which formula represents a covalent compound?
answer:(H2O2)
3.In the formula for water (H2O), what does the lack of a subscript after the O indicate? answer:(There is one oxygen atom in the compound.)
4.What symbol is used to separate the products from each other or the reactants from each other in a chemical reaction?answer: (A PLUS SIGHN)
5.Which option is a covalent compound?
answer:(NO2)
Explanation:
Took the Test and got 100% thank me later
Activities that shows the nature and goals of anthropology,Sociology and Political Science
To answer the question effectively, we will talk about the key words in the question.
ANTHROPOLOGY, SOCIOLOGY AND POLITICAL SCIENCE.
ANTHROPOLOGY; This is the study of human kinds in all times and places,it also entails humanistic study which includes our prehistoric origins and contemporary human diversity as well as topics like social change,globalization,human origin and the world history.
The activities that shows the nature and goals of anthropology includes;
- Looking at ones own culture in a more objective way like an outsider.
- Discovering the things that make people more different from one another.
- Producing new theories and knowledge about human home and their behaviors.
- Discovering/finding out what all people have in common.
There are four fields of anthropology; Linguistic anthropology, Biological anthropology, Archeology and cultural anthropology.
SOCIOLOGY; This is the scientific study of human civilization.
It is systemic and studies of groups and societies that people build
and the effect these have on their behavior.
Sociology greatly focuses on various social connections,
structures, organizations, processes and institutions.
The activities that show the goals and nature of sociology includes;
- Broadening our familiarity on facts about sociology.
- Critically studying the nature of humanity.
- Exposing our minds to the diverse perspectives on attaining the truth.
- Obtaining possible theories about the society.
- Understanding and appreciating that all things in the society are interdependent with each other.
Sociology brings together inputs that are composed of frequent forms and manners,they include; view points, consolidated values, attitudes and the norms of social institutions.
The different branches of sociology are; social psychology,social organisation, applied sociology, population studies, sociological theory and research,human ecology,social change.
POLITICAL SCIENCE; This is a discipline in academics that deals with the study of political processes, institutions, governments and behaviors of people.
It studies the complex behaviors of the people in power, various political actors, such as the government administration, opposition ad the subjects which are the masses.
Anthropology, sociology and political science are areas of social science, whose main objective is to study society in historical, social and cultural contexts.
Anthropology is the science that studies the human being in depth considering biological, social and cultural aspects. Its objective is to understand the development of man in these aspects.Sociology has as its nature the study of societies, its objective is to understand the behavior of man in social formations.Political science is the science that studies the systems of government and formation of political power in society. Its aim is to better understand political institutions and their impact on society.Therefore, the social sciences seek to analyze and understand man through society, culture, economy and politics, with the aim of contributing to the development of a more egalitarian society with a better quality of life.
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Question 7 of 10
You have two pieces of metal. Metal A has a higher temperature than metal
B. What does this tell you about them?
A. The molecules in metal A are vibrating faster.
B. There is more light energy in metal B.
C. Metal B has more heat energy.
D. Metal A has more gravitational potential energy.
SUBMIT
Answer:
Answer is A.
Explanation:
In the modern Periodic Table of the Elements, in order of what property are the elements arranged?
atomic number?
date of discovery?
number of neutrons?
Reactivity with hydrogen?
Answer:
They are organized by atomic number, hence the reason for 1,2,3,4, you get where im goin'?
Explanation:
Anions have a _______ charge and cations have a _______ charge
Explanation:
Anions have a negative charge resulting from the gain of one or more electrons to become stable.
Cations have a positive charge due to the loss of two or more electrons in order to become stable or have a noble gas configuration.
Hope this helps you
what type of consumer are bears?
Foods cook faster when placed in a pressure cooker. This is because the pressure on the surface of the water is
Answer:higher than and higher than
Explanation:
What is the formula weight (amu) of the molecule H2O? Use atomic masses of H and O as 1.008 amu and 16.00 amu respectively. Report answer to 4 sig figs.
Answer:
Formula weight of H₂O molecule is 18.02 amu.
Explanation:
Given data:
Formula weight of H₂O = ?
Atomic mass of H = 1.008 amu
Atomic mass of O = 16.00 amu
Solution:
Formula weight:
"It is the sum of all the atomic weight of atoms present in given formula"
Formula weight of H₂O = 2×1.008 amu + 1×16.00 amu
Formula weight of H₂O = 18.02 amu
Thus, formula weight of H₂O molecule is 18.02 amu.
boiling and melting points exploration
Answer:
Boiling- 212° F melting- 32°F
Explanation:
What conclusion is best supported by the decay chain?
A) Each alpha decay results in an isotope that is slightly more stable than the original isotope.
B) Each beta decay results in an isotope that is slightly more stable than the original isotope.
C) The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
D) The mass number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Answer:
C. The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Answer:
c. The atomic number increase caused by two beta decays is the same as the decrease caused by one alpha decay.
Explanation:
got it correct on quiz
HELP!!!!
An unknown gas effuses at a rate of 2.0 times the rate of CL2. What is the molar mass of the unknown gas?
The molar mass of the unknown gas is 17.75 g/mol
From Graham's law of diffusion, we understood that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas as shown below:R ∝ [tex]\frac{1}{\sqrt{M}}[/tex]
Expanding further, we have
[tex]\frac{R_{1} }{R_{2} } = \sqrt{\frac{M_{2}}{M_{1}} }[/tex]
Where
R₁ and R₂ are the rate of diffusion of the individual gas
M₁ and M₂ are the molar masses of the individual gas.
With the above information in mind, we can obtain the molar mass of the unknown gas as follow:
Let R₁ be the rate of the unknown gas
Let R₂ be rate of Cl₂ gas
Let M₁ be the molar mass of the unknown gas
Let M₂ be the molar mass of the Cl₂ gas
From the question given above, we were obtained the following:
Rate of the unknown gas = 2 times the rate of Cl₂ i.e
R₁ = 2R₂Molar mass of Cl₂ (M₂) = 2 × 35.5 = 71 g/mol
Molar mass of the unknown gas (M₁) =?[tex]\frac{R_{1} }{R_{2} } = \sqrt{\frac{M_{2}}{M_{1}} }\\\\\\\frac{2R_{2}}{R_{2} } = \sqrt{\frac{7 1}{M_{1}} }\\\\2 = \sqrt{\frac{7 1}{M_{1}} }[/tex]
Square both sides[tex]2^{2} = \frac{71}{M_{1}} \\\\4 = \frac{71}{M_{1}}[/tex]
Cross multiply4 × M₁ = 71
Divide both side by 4[tex]M_{1} = \frac{71}{4}[/tex]
M₁ = 17.75 g/molTherefore, the molar mass of the unknown gas is 17.75 g/mol
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