Answer:
V = 1.46 L.
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to solve this problem based off the definition of molarity, as the moles of solute divided by the volume in liters of solution:
[tex]M=\frac{n}{V}[/tex]
In such a way, we first calculate the moles of K2(MnO4) by using its molar mass of 197.132 g/mol:
[tex]n=75g*\frac{1mol}{197.132g}=0.38mol[/tex]
Next, we solve for the volume in the equation of molarity to obtain:
[tex]V=\frac{n}{M}[/tex]
And plug in as follows:
[tex]V=\frac{0.38mol}{0.26mol/L}\\\\V=1.46L[/tex]
Regards!
The equivalence point for a strong acid – strong base titration will occur at:
pH < 7
pH = 7
pH > 7
pH = 14
I believe the ans is (2) pH = 7.
Explanation:
At the equivalence point, the salt of strong acid and strong base is completely hydrolyzed which gives a neutral solution with pH 7 as H+ ion concentration is equal to OH- ion concentration.
So I have an F in science, and everything is due today. Am I going to fail 9th grade because I didn't pass that class?
Answer:
i dk how ur school works, but you'll most likely have to take that science again to get the credits u need to graduate
Explanation:
For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 8.7 moles of methane, CH4 ?
Answer:
[tex]from \: the \: equation : \\ 1 \: mole \: of \: methane \: is \: produced \: by \: 2 \: moles \: of \: hydrogen \\ 8.7 \: moles \: of \: methane \: will \: produce \: (8.7 \times 2) \: moles \\ = 17.4 \: moles \\ 1 \: mole \: of \: methane \: weighs \: 16 \: g \\ 17.4 \: moles \: will \: weigh \: (17.4 \times 16) \: g \\ = 278.4 \: g[/tex]
Describe how electromagnetic waves are formed and
travel through space.
Answer:
Electromagnetic waves are created by a charged particle that generates an electric field. The electric field creates a magnetic field. As the charged particle moves, the electric field and magnetic field keep changing, which causes the wave to move
Answer:
Electromagnetic waves are formed by charged particles which create an electric field. The electric field generates a magnetic field. As the particle moves, the electric field changes, which causes the magnetic field to change.
Explanation:
Edge, 2022.
In June, the most northern parts of earth get?
Which is the best way to describe the biodiversity of an area?
O A grassland has organisms that live on hundreds of acres of land.
O A desert has 10 species of animals that can survive dry conditions.
O A rainforest has fertile soil that supports many kinds of plants.
O A pond has 12 species of organisms, including 300 animals and 40 plants.
Answer:
i just put a
Explanation:
Answer:
the answer is d, i got it on edge
The velocity of sound in water is 350 m/s. If a wave eith a wavelength of 6 m travels water, at what frequency will it be traveling?
Answer: 1,480m/s
Explanation:
How many total atoms are in 1 mole of H2O?
Answer:
1.806 x 10^24 atoms total
Explanation:
please answer quick please, im have a test
Help I need a answer on question 18 and I only got 10 minutes
Answer:
5 degrees
Explanation:
I think I might be wrong id k
Mass is a measure of how much matter something has.
False
True
Answer:
true
Explanation:
_____ Ca(NO3)2 + _____ Fe → _____ Fe(NO3)3 + _____ Ca I need this done quick and fast Balancing chemical equations
Answer:
3, 2, 2,3
..........................
Explain how the connotations of the bolded words in each sentence impact the meaning being conveyed.
Answer:
Find the explanation below.
Explanation:
Sentence A: In sentence A, the bolded words create a positive undertone to the entire meaning of the text. Words such as unimaginable accomplishment, stunning, and fascinated produce a pleasing and heartening mood. They make it clearer to the reader that this action by the scientists elicited a favorable response from the viewers.
Sentence B: In sentence B, there is a negative undertone to the text. The use of descriptors such as shocking, recklessly, alarmed, tells the reader of the unfavorable response the action of the scientists produced in the viewers. A gloomy mood is thus created.
How many grams are there in 7.40 moles of AgNO3?
Answer:
1257.03 grams
Explanation:
mass=mole*molar mass
mass=7.4*169.87= 1257.03
Vhat is thermal energy?
the average overall volume of a system
the total number of molecules in a system
the kinetic energy of particles in a system
the measure of temperature in a system
which of the following does NOT cause the
urban heat island effect
Answer:
what are the options?
Explanation:
In an ecosystem the urban heat island effect is caused by construction of tall buildings and concrete roads.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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helpppppp plzzzzzzzzz
Answer:
is this for rp
Explanation:
How many grams of chlorine would exert a pressure of 610 torr in a 3.26-liter container at standard temperature? 4.25gCL
Answer:
[tex]m=8.28gCl_2[/tex]
Explanation:
Hello there!
In this case, according to the given information, it possible for us to realize that this problem is solved via the ideal gas equation:
[tex]PV=nRT[/tex]
By which we solve for the moles of chlorine gas as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Next, we plug in the given pressure (in atm), the volume and standard pressure (273.15K) to obtain:
[tex]n=\frac{610/760atm*3.26L}{0.08206\frac{atm*L}{mol*K}*273.15K}\\\\n=0.117molCl_2[/tex]
Then, since the molar mass of chlorine gas (Cl2) is 70.9 g/mol, the mass of this gas turns out to be:
[tex]m=0.117molCl_2*\frac{70.9gCl_2}{1molCl_2} \\\\m=8.28gCl_2[/tex]
Regards!
PLEASE ANSWER ASAP!!!!!!! 50 points if the answer is correct!
Vinegar is sold as a 5.00% (v/v) solution of acetic acid. How many mL of water are in a 455-mL bottle of vinegar? Round your answer to 3 significant figures. Please answer in mL
Please please only answer if you are sure the answer is correct. thank you so much
5
mL acetic acid
95
mL water
Explanation:
Since
5
%
of the vinegar, by volume, is acetic acid, and we have
100
mL of vinegar, we have
5
mL of vinegar.
Similarly, we have
100
%
−
5
%
=
95
%
being water, so we have
95
mL of water.
two copper electrodes dipped in copper sulphate solution are connected to the end of the battery marked with a ''_'' is:
a) anion
b) cathode
c) anode
d) cation
plz I need the answer asap
Answer:
d) catión
Explanation:
Two copper electrodes dipped in copper sulphate solution are connected to the end of the battery marked with a is a cation. Hence, option D is correct.
What are electrodes?An electrode is a conductor of electricity that can carry electric current into non-metals and other poor conductors of electricity.
The process is called electrolysis, and the two wires or plates dipping into the electrolyte are called electrodes.
The electrode which is connected to the positive terminal of the cell or battery is called the anode.
The electrode which is connected to the negative terminal of the battery is called the cathode.
Hence, option D is correct.
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1. What did you notice about the distance between the atoms as the number of bonds increased? (Compare bond of H2S and H2O)
2. What is the relationship between atomic size and bond length for H2O / H2S and CO2 / CS2?
Answer:
Inverse relationship between number of covalent bonds and bond length.
Explanation:
There is inverse relationship between number of covalent bonds and bond length which means that if one increases the decreases or the one decreases the increases. When the number of covalent bonds between two atoms increases, the bond length decreases because there are more number of electrons present between the two nuclei, the two nuclei can get closer to each other until both nuclei experience their repulsive force of attraction. In bond of H2S has lower electronegativity value as compared to H2O so the bond length decreases due to attraction of shared pair of electrons by both nuclei.
I am so sorry to ask again but I suck at science and I rlly need help so could any one help me plzz and btw ty to jasminegomez18 for helping me with the other question I really appreciate thank you ! :)
Answer:
c) evaporating
d) has no salt in it
Explanation:
no problem anytime. just try to understand the concept and it will definitely help if you read the question more than once.
the change of state that is happening the surface of the sea water is evaporating. This is because it allows from liquid to vapour/ gas based on the diagram
the water in the test tube is different from sea water because it is pure meaning no salt. It's evident based on figure 2 because sea water is full of solutions and mixtures.
Unit 7 CER
Using your knowledge of chemistry and the information below determine if the unknown compound is covalent or ionic.
CaCl2
*Make sure to write your answer using complete sentences.
*Make sure your answer has a claim whether it is ionic or covalent.
*Cite at least 1 piece of evidence and your knowledge of chemistry to back up your claim.
*The reasoning or conclusion behind your claim.
What process helps to purify water in nature?
Answer:
Filtration,Sedimentation and distillation
Explanation:
These 3 are physical processes which are commonly used in nature while in chemical processes,Chlorination is done to eliminate bacteria and other germs present
Happy 2 have helped in some way
What is the mass of 6.40 moles of copper(II)chloride (CuCl2)?
Answer:
860. g CuCl₂
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableCompoundsMolesStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
[Given] 6.40 mol CuCl₂
[Solve] g CuCl₂
Step 2: Identify Conversions
[PT] Molar Mass of Cu: 63.55 g/mol
[PT] Molar Mass of Cl: 35.45 g/mol
Molar Mass of CuCl₂: 63.55 + 2(35.45) = 134.45 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.40 \ mol \ CuCl_2(\frac{134.45 \ g \ CuCl_2}{1 \ mol \ CuCl_2})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 860.48 \ g \ CuCl_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
860.48 g CuCl₂ ≈ 860. g CuCl₂
Let's say you are sanding a rough board to make shelves for you bedroom. What type of weathering would this be? How do you know?
Answer:
Physical or Mechanical weathering.
Explanation:
The sanding is a physical transformation of the rough board to make shelves for the bedroom and thus includes wear and tear of the wood in order to make the set. Hence the process includes grinding, polishing and smoothing the surface to make it usable.the greenhouse effect
The greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
What are greenhouse gases?Greenhouse gases are different types of gaseous elements that trap solar radiation on the Earth's surface.
The most important greenhouse gases include, among others, methane and carbon dioxide (CO2).
In conclusion, the greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
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Who can help me with 4 questions of ixl about changes in gravitational potential energy
can u pls show a picture of it?
An unknown compound has the following chemical formula:
P4Sx
where x stands for a whole number.
Measurements also show that a certain sample of the unknown compound contains 2.9 mol of sulfur and 1.94 mol of phosphorus. Write the complete chemical formula for the unknown compound.
will give brainliest :]
Answer:
where the main questions of these assmesnt
Explanation:
the symbol of the eyes of symbol of shayambhunath stupa
Explanation:
The symbol of the eyes of syambhunath stupa refers to the eyes of gautam buddha also known as the eyes of wisdom. These eyes are prevalent throughout the country and have become a symbol of peace.
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