The electrolysis of molten AlCl3 for 4.25 hr having the current of 25Ampere will produces 35.67g of aluminum metal.
What is Electrolysis?Electrolysis can be described as the process where by electric current is passed through a substance to effect a chemical change.
The mass of the deposited metal can be calculated as
=[tex]W = CEt/96500[/tex]
Given;
t = time taken = 4.25hr
we can convert the time given from ( hrs) to secs as follows;
60secs=1 mins
60*60 secs = 1 hr
Then 25hrs= 4.25*60*60 = 15300s
C = Current = 25.0 A
E = Equivalent mass of Aluminum =9
Atomic-mass/valency = 27/3 = 9
If we substitute the values we have;
[tex]W = ( 27*9*15300)/96500[/tex]
= 35.67g
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Which stage is the last stage of speciation? question 5 options: the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring. The populations successfully interbreed. The populations become totally separated from one another. The populations are isolated and thus do not interbreed
Answer:
D) The population become adapted to different environments and eventually becomes so different that they cannot interbreed to produce fertile offspring.
Explanation:
Speciation is divided into three stages:
a) Separation.
b) Adaptation.
c) Reproductive Isolation.
Stage 1: Separation.
A part of the population separates and adapts to a new environment. Natural events such as tsunamis, tidal waves can cause organisms to separate from their initial habitat to a new environment.
Stage 2: Adaptation.
At this stage, the organisms evolve new traits that enable them to a new environment. They possess certain characteristics that enable them to fit into the new environment. Example The great white skin's color makes it difficult for it to be seen in the dark.
Stage 3: Reproductive Isolation.
At this stage, organisms of the same species reunite and do not interbreed. Here, species are isolated into new ones so they have the best adaptations for their new habitat.
What is the exact volume of the sphere? 2481. 156π cm³ 7263. 39π cm³ 7790. 83π cm³ 22807. 05π cm³
Explanation and Answer:
The volume of a Sphere in terms of radius
V=43πr3
V≈4.1888r3
in terms of surface area
V=A3/26π−−√
V≈0.09403A3/2
in terms of circumference
V=C36π2
V≈0.01689C3
The upper limit of the zone of saturation is known as
400 students were randomly sampled from a large university, and 289 said they did not get enough sleep. Conduct a hypothesis test to check whether this represents a statistically significant difference from 50%, and use a significance level of 0. 1
Answer:
The sample proportion represents a statistically significant difference from 50%
Explanation:
The sample proportion is the same as 50%
Alternate hypothesis: The sample proportion is not the same as 50%
z = (p' - p) ÷ sqrt[p(1 - p) ÷ n]
p' is sample proportion = 289/400 = 0.7225
p is population proportion = 50% = 0.5
n is number of students sampled = 400
z = (0.7225 - 0.5) ÷ sqrt[0.5(1 - 0.5) ÷ 400] = 0.2225 ÷ 0.025 = 8.9
The test is a two-tailed test. Using a 0.01 significance level, critical value is 2.576. The region of no rejection of the null hypothesis is -2.576 and 2.576.
How do you speak to your female friends and how do you speak to your male friends
Answer:
Walk up to em and start giving information abt yo self denn get yo know em more
Write down an expression for the range of k consecutive integers
The state has the right to impose some limitations on abortion. brainly
Answer:
Supreme Court
Explanation:
I just did the assignment and got it right
The only institution that has the right to impose some limitations on abortion is; Supreme Court.
What are the powers of the supreme court?The only institution that has the right to impose some limitations on abortion is the Supreme Court.
The reason that the answer is supreme court is because it is the highest court of any country and its' main power is judicial review, or the ability of the to declare a Legislative or Executive act in violation of the Constitution that cannot be found within the text of the Constitution itself.
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What property justifies the statement ""any real number is always equal to itself.""?
The property that justifies the statement "any real number is always equal to itself." is; Reflexive Property
What is reflexive property?In algebra, the reflexive property of equality is a property of algebra which states that a number is always equal to itself. Thus, if x is a number, then. x = x.
Reflexive properties are also used even in congruency theorems and similarity theorems of triangles.
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An istrument use to transfer measurements is called
Divider, instrument for measuring, transferring, or marking off distances, consisting of two straight adjustable legs hinged together and ending in sharp points. (got the answer from google hehe)
Answer:
divider is used to transfer instrument ...........!! ♥♥hope it helps u
Let h(x) = 2x + 5 and g(x) = 8 – 3x. What is the value of h(g(1.5))?
Answer:
I believe it is 12
Explanation:
You start off by solving the first function, in this case, g(1.5). You replace x with 1.5 and then you are done withthe first step. After you get a result for g(1.5), which is 3.5, you start solving h(3.5). The h function is equal to 12.
I hope it helped!! Good luck!
Micah is 1 of 28 students in a class. Micah's teacher is going to randomly select 3 students from their class to
visit a classroom of younger students.
What is the probability Micah is included in the group of students chosen?
Answer:
10.71%
The probability of her getting picked is unlikely :)
Explanation:
3/28 = 10.71%
The probability of her getting picked is unlikely
Have an amazing day!!
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Note that the probability that Micah is included in the group of students chosen is approximately 0.000305, or about 0.03%.
How to compute the above probabilityMicah's probability of being included in the group of students chosen can be calculated using combinations. There are a total of 28 students in the class, and the teacher is selecting 3 students.
The probability of Micah being chosen can be calculated as:
Probability = (Number of favorable outcomes) / (Total number of possible outcomes)
Number of favorable outcomes = 1 (Micah being selected)
Total number of possible outcomes = Number of ways to choose 3 students out of 28 = C(28, 3) = 3276
Probability = 1 / 3276
≈ 0.000305
So, the probability that Micah is included in the group of students chosen is approximately 0.000305, or about 0.03%.
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Determine the direction of electron flow and label the anode and the cathode. Label each electrode as negative or positive. Drag the appropriate labels to their respective targets
In an electrochemical cell, electrons flow from anode to cathode while current flows in the opposite direction.
What is an electrochemical cell?The question is incomplete but it clearly relates to an electrochemical cell so I will answer in a general way. An electrochemical cell consists of a cathode and an anode. The anode is positively charged while the cathode is negatively charged.
We should note that electrons flow from anode to cathode but the flow of current is in the opposite direction. This occurs because the electron is negatively charged.
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In peas, purple flowers are dominant over white flowers. If two heterozygotes are crossed, what fraction of the population will have white flowers?
The fraction of the population will have white flowers after the crossing of the heterozygotes is; 1/2
What is the result of the heterozygote crossing?P = purple gene
p = white gene
Punnet squares shows the possible genotypes and probabilities of each genotype in the offspring of a cross:
Purple flower genotype (heterozygous) = Pp
White flower genotype = pp
Potential genotypes for offspring are Pp and pp;
According to the Punnett square, 2 of 4 offspring will have the Pp genotype and the other 2 will have pp genotypes;
This means 2 should be purple and 2 white which translates to the fact that there is a 50% chance of having either genotype, of being purple or white.
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Nucleophilicity is a kinetic property. A higher nucleophilicity indicates that the nucleophile will easily donate its electrons to the electrophile and that the reaction will occur at the faster rate. The reaction rate also depends on the nature of the electrophile and solvent. Rank the following reactions from fastest to slowest based on the nucleophilicity of the nucleophile
From the fastest to the slowest based on the nucleophilicity of the nucleophiles, the order is represented as:
[tex]\mathbf{(CH_3)_2N^- +CH_3 -Br \to (CH_3)_2NCH_3+Br^- \ }\\ \\ \\ \mathbf{CH_3NH^- +CH_3 -Br \to CH_3NHCH_3+Br^- \ } \\ \\ \\ \mathbf{H_3N^- +CH_3 -Br \to CH_3NH_2 + Br^- \ }[/tex]
What are Nucleophilic functional groups?Nucleophilic functional groups include electron-rich atoms capable of donating an electron pair in order to establish a new chemical covalent bond. The most frequent nucleophilic functional groups are:
Water, Alcohols, Phenols, Amines, Thiols, etcThe protonation state of these functional groups has an effect on their nucleophilicity. Also, the trend of nucleophilicity goes from:
Tertiary,Secondary, PrimaryThe following reactions that we are supposed to find their order is given as follows:
[tex]\mathbf{CH_3NH^- +CH_3 -Br \to CH_3NHCH_3+Br^-} \\ \\ \\ \mathbf{(CH_3)_2N^- +CH_3 -Br \to (CH_3)_2NCH_3+Br^-} \\ \\ \\ \mathbf{H_3N^- +CH_3 -Br \to CH_3NH_2 + Br^-}[/tex]
From the fastest trend of the nucleophilicity of the nucleophile to the slowest, the correct arrangement is as follows:
[tex]\mathbf{(CH_3)_2N^- +CH_3 -Br \to (CH_3)_2NCH_3+Br^- \ \ \ ---(2'' \ ^0) \ \\}\\ \\ \\ \mathbf{CH_3NH^- +CH_3 -Br \to CH_3NHCH_3+Br^- \ \ \ \ ---(1^0) } \\ \\ \\ \mathbf{H_3N^- +CH_3 -Br \to CH_3NH_2 + Br^- \ \ \ --- \ \ \ \ (1^0)}[/tex]
The first reaction has two functional groups of methyl (-CH_3) attached to it which increases its nucleophilicity to the second one which has one methyl functional group attached to it.
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Write a note to your pen pal about the kinds of music you like best. In addition, write about any instruments you might play. Be sure you use at least 5-6 complete spanish sentences in your response. You will be graded on (a) appropriateness of your response, (b) correct verb usage, (c) vocabulary usage and (d) overall quality of your response
Answer:
u can play the drums?
Explanation:
bc u can make drums out of anythig in the olden days
Message left on voicemail: "hi nikki! just landed at the airport. How about dinner this evening if you're available. Call me!" which of the following characteristics of useful information is absent in the situation described above?
Answer:
Option C
Explanation:
Options:
A) relevant
B) reliable
C) complete
D) timely
E) understandable
F) verifiable
G) accessible
Your answer is option C or "complete." The person who is messaging Nikki did not complete the voicemail. She didn't tell Nikki where to meet for dinner or at what time she just said this evening which gives Nikki no information on when and where to meet this person for dinner. This is a incomplete voicemail which means one of the important characteristics of useful information missing from this voicemail is the complete voicemail for Nikki.
Hope this helps.
What is another word that can be used to describe "homeostasis"?
Why does the speaker in "the tropics in new york" weep at the end of the poem? question 1 options: he is hungry and cannot buy fruit to eat. He has lost his belief in religion. He is overwhelmed with nostalgia for the home of his past. He has lost his vision and cannot see clearly
The speaker in "the tropics in New York" weep at the end of the poem because He is overwhelmed with nostalgia for the home of his past.
Why does the speaker in the tropics in New York weep?In "The Tropics in New York," is known to be a poem that tells about the memories of the speaker.
The reason why I think the speaker weeps is that The poet is trying to remembering her homeland and as such, he weeps because she misses it.
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Answer:
HE IS OVERWHELMED WITH NOSTALGIA FOR THE HOME OF HIS PAST
Explanation:
I HOPE THIS HELPS
Other than his brutal bullying of witnesses, what brought down senator joseph mccarthy in 1954? alleged "communists" called to testify refused to do so. wisconsin voters refused to reelect mccarthy, who lost his seat in the senate. mccarthy hinted that president eisenhower himself was sheltering communists. mccarthy charged that there were communists in the u.s. army.
Answer:
McCarthy charged that there were Communists in the U.S. Army.
Explanation:
Missy diwater, the former platform diver for the ringling brothers’ circus had a kinetic energy of 15,000j just prior to hitting the bucket of water. If missy’s mass is 50kg, the what was her velocity?
Answer:Missy's kinetic energy just before hitting the bucket of water is given by
where m is Missy's mass and v her speed. Since we know the value of the kinetic energy, K=15000 J and the mass, m=50 kg, we can find Missy's speed before hitting the water bucket:
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Explanation:
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Acceleration due to gravity on the moon is 1. 6 m/s2. If an astronaut on the moon threw a moon rock to a height of 7. 8 m, what would be its velocity as it struck the moon's surface?
Answer:
5.0 m/s
I hope this helps you
:)
Chanel deposited $1175 into a savings account that pays a simple annual interest rate of 1. 45%. How much interest will she earn after 4 years?
Answer:
2.45%
Explanation:
over 4 years
A block of mass 500 g is attached to a horizontal spring, whose force constant is 25. 0 n/m. The block is undergoing simple harmonic motion with an amplitude of 6. 00 cm. At t=0 the block is 4. 00 cm to the left of its equilibrium position and is moving to the right. At what time t1 will it first reach the limit of its motion to the right?
The time taken for the car to reach the limit or amplitude of the motion is 0.33 s.
Equation for the simple harmonic motion of the block
The equation for the simple harmonic motion of the block is calculated as follows;
y = A sin(ωt + Φ)
where;
A is the amplitudeω is the angular speedt is the time of motionΦ is the phase angleAngular speedThe angular speed is calculated as follows;
[tex]\omega = \sqrt{\frac{k}{m} } \\\\\omega = \sqrt{\frac{25}{0.5} } \\\\\omega = 7.07 \ rad/s[/tex]
Phase angle[tex]\Phi = sin^{-1} (\frac{-4}{6} )\\\\\Phi = -0.73 \ rad[/tex]
The time taken for the car to reach the limit or amplitude of the motion is calculated as follows;
0.06 = 0.06sin(7.07t - 0.73)
1 = sin(7.07t - 0.73)
7.07t - 0.73 = sin⁻¹(1)
7.07t - 0.73 = 1.57
7.07t = 2.3
t = 2.3/7.07
t = 0.33 s
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Which is the best factor that is unlikely to limit population growth
Which factors caused civil unrest in the 1960's? choose all answers that are correct
you didn't provide any options
Answer:
A) Americans no longer supported the Vietnam War.
C) Women were paid less than men for doing the same job.
D) Black citizens were still fighting against discrimination.
Explanation:
I took the test and got 100%. I hope I helped! Please mark this answer as brainliest!
The process of labelling deviants is also known as
Answer:
Labeling theory.
meaning: Labeling theory is an approach in the sociology of deviance that focuses on the ways in which the agents of social control attach stigmatizing stereotypes to particular groups, and the ways in which the stigmatized change their behavior once labeled.
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Which measure of center should you use to describe two data sets that are both not symmetric?
In which one of the following situations will there be an increase in kinetic energy?
The situation that will result to an increase in kinetic energy is when a ball starts from rest and freely rolls downhill.
What is a kinetic energy?A kinetic energy refers to an energy generated by an object as a result of the its motion.
When a ball starts from rest and freely rolls downhill, its generates an energy from its free motion.
Therefore, the Option B is correct.
Missing options "A) A projectile approaches its maximum height, B) A ball starts from rest and freely rolls downhill, C) A box is pulled across a rough floor at constant speed, D) A satellite travels in a circular orbit around the earth at fixed altitude, E) A stone at the end of a string is whirled in a horizontal circle at constant speed."
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How many carbon atoms are there in 52. 06 g of carbon dioxide?
Answer:
9.033 x 1023 atoms of carbon.
Explanation:
Hope this helped you,
1.5 mole of C = 6.022 x 102 x 1.5 this equals
9.033 x 1023 atoms of carbon.
The half life of a radioactive substance is 15 years