Answer:
255
Explanation:
trust but only for 1+2+4…
In this experiment, you will use universal indicator to qualitatively measure ph. The universal indicator in this experiment is a mixture of 4 common indicators allowing for a large ph range to be measured. The following table (also available in your lab manual) describes the individual components of our universal indicator.
The true statements is that the color of the indicator relates to the hydrogen ion concentration of the solution.
What does the color change tell you about the pH?If a solution is acidic or basic, it can be measured using the pH scale. The universal indicator is said to be added into a specific solution, the color change therefore shows the estimate of the pH of the solution.
An Acid often makes universal indicator solution to change from green toward red and their solution's pH is one that is below 7 on the pH scale.
Note that pH indicators are said to be weak acids and they show the concentration of H+ (H3O+) ions in a solution through color change.
See options below
Select all of the following statements that are true about the universal indicator used in this experiment
The color of the indicator relates to the hydrogen ion concentration of the solution.
At pH 7 the indicator will be colorless.
The universal indicator (or parts thereof) are in equilibrium and have an associated K value.
The color of the indicator relates to the neutral ion concentration in solution.
The universal indicator is a single chemical compound.
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Jackson invested $52,000 in an account paying an interest rate of 2. 1% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 17 years?
Answer:
3.1%
Explanation:
after 17 years
Three life skills that can assist a grade 12 school leaver to adapt to the world of work in 2023.
The three skills which can assist a school leaver to adapt to the world of work in 2023 are;
Communication skills: A school leaver should learn written and spoken communication skills effectively in order to survive in the world of work.Adaptability skills: The ability of a person to adapt to a new thing or environment is important to be successful in their work.Critical thinking ability: A person should be able to think critically or outside the box in order to be creative and unique among others.What is a skill?This refers to a personal and practical knowledge of a person about something.
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What paul’s father sees most likely makes him realize that ghost wind is more dangerous than he thought he was. Paul is not the one responsible for ghost wind’s injuries. Paul is not as experienced with horses as he seemed to be. Ghost wind is too injured to continue his training
Answer:
I'm 99.99999% sure its B
Answer:
Its B- Paul is not the one responsible for Ghost Wind’s injuries.
Explanation: I took the test and got a 100%
Who robbed banks to support the bolsheviks, had trouble dealing with farmers, held the moscow show trials, and had many people that disagreed with him disappear or die including his wife?
Answer:
Joseph Stalin
Explanation:
i took the test!
In humans blood type is determined by the a b and o alleles.
What does the parallelism in this excerpt emphasize?
Answer:
so it means to say or provide
Explanation:
but that is correct
Which excerpt from the treasure of lemon brown would provide strong evidence.
Answer:
The Treasure of Lemon Brown" would provide strong evidence that by the end of the story, Greg develops an appreciation for his father? His father's words, like the distant thunder that now echoed through the streets of Harlem, still rumbled softly in his ears.
A furniture store pays a wholesale price for a mattress.
Please give me more information about the question!!!
Which equation represents this situation? josé worked 2. 5 hours more than william. Together, they worked a total of 22 hours. William worked h hours.
Answer:
2h + 2.5 = 22
Explanation:
William: h
Jose: h + 2.5
so
h + h + 2.5 = 22
2h + 2.5 = 22
How many hydrogen molecules are in 0.450 moles of H2?
Answer:
0.9 gram is H2 molecule.....
The following are energy releasing phase changes except
Answer:
Gas and liquid except solid
There is a history of global temperatures changing but why is this change different.
Answer:
1) high water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color
2) acidic carbon dioxide dissolves in water, lowering the water's pH
3) the shift in temperature is happening more quickly
4) to protect itself from the sun
5) the biodiversity of the water
Answer:
1) What causes coral bleaching?
High water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color.
2) What causes ocean acidification?
Acidic carbon dioxide dissolves in water, lowering the water’s pH.
3)There is a history of global temperatures changing, but why is this change different?
This shift in temperature is happening more quickly.
4) Which is the least likely reason that a seal needs ice cover?
to protect itself from the sun
5) Coral bleaching affects
the biodiversity of the water.
Explanation: I just took the quick check 100% correct
A gas that has a volume of 28 liters, a temperature of 450c, and an unknown pressure has its volume increased to 34 liters and its temperature decreased to 350c. If i measure the pressure after the change to be 2. 0 atm, what was the original pressure of the gas?.
Answer:
2.82 atm
Explanation:
Initial:
V1 = 28 liters, T1 = 450 C = 450 + 273 K = 723 K, P1 = ?
Final:
V2 = 34 liters, T2 = 350 C = 350 + 273 K = 623 K, P2 = 2.0 atm
Use P1 * V1 / T1 = P2 * V2 / T2
so P1 = P2 * (V2/V1) * (T1/T2) = 2.0 * (34/28) * (723/623) = 2.82 atm
How does sancho know which locker is william's? the gym lady told him. Bolsa lead him to it. Sancho looked it up in the gym records. There is a sign with his name on it
The way Sancho know which locker is William's is that there is a sign with his name on it.
What is a locker?A locker in English is described as a kind of little area or compartment that can also be called a drawer that a person can lock.
It is said to be found in schools, gymnasium and can be used to keep, for clothes and valuables. A lot of people do have personalized locker that is with their name on it
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Answer: D.
Explanation: On Edge!
Water is one of the most powerful forces on earth. How does the example shown here illustrate the theory of uniformitarianism?
The image illustrates the theory of uniformitarianism by; showing us the erosion activity of land in past and present scenarios.
What is uniformitarianism?The theory of uniformitarianism is the principle given by the Scottish Geologist Hutton that says that the present is the mirror to the history and the geological evolutions of the past eras.
Thus, the principle states that the geological process is continuous and constant rather than being broken or discontinuous.
The image attached shows the soil erosion process of the land and this tells us that the erosion even happened in earlier times on that land and still in the present time the process is continuously going on.
Therefore, the image illustrates the theory of uniformitarianism by showing us the erosion activity of land in past and present scenarios.
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A thunderstorm adds freshwater to the ocean. What does this do?
Answer:
here
Explanation:
When salt dissolves in water, it comes apart into ions with positive and negative electrical charge. That's actually what we mean by calling a material a salt. Ordinary table salt forms Na+ and Cl-. These charged particles are dragged opposite ways by an electrical field, making an electrical current. So that's how salt water conducts.
A student attaches a block to a horizontal spring so that the block-spring system will oscillate if the block-spring system is released from rest at a horizontal position that is not the system’s equilibrium position. The oscillatory motion of the system is described by the graph of the block’s acceleration as a function of time. An identical experiment is conducted except that a new spring is used that has a spring constant that is twice the value of that of the original spring. Which two of the following predictions are correct about the system when it undergoes simple harmonic motion? select two answers
Since the spring constant was increased by 2 the following are true;
The amplitude of oscillation will be increased by a factor of 2.The maximum spring potential energy of the system will be increased by a factor of 4.What is Simple harmonic motion?The term simple harmonic motion refers to a regular repeating motion whose acceleration is directed towards the center of the motion.
From the description in the question, we can see that the new spring used has a spring constant that is twice that of the first spring. The following therefore are true;
The amplitude of oscillation will be increased by a factor of 2.The maximum spring potential energy of the system will be increased by a factor of 4.Learn more about spring constant: https://brainly.com/question/4291098
1. This composite figure is created by placing a sector of a circle on a rectangle. What is the area of this composite figure? show you work.
The total area of the composite figure is; 142.12m²
How to find the area of a Composite Figure?For the rectangle, we are given;
length = 14m
width = 6m
Thus;
Area of rectangle = length x breadth
Area = 14 x 6
Area = 84m²
Now, For the sector of the circle, we are given;
θ = 34°
radius; r = 14m
Thus;
Area of the sector = (θ/360) * π * r²
Area of sector = 34/360 * π * 14²
Area = 58.12 m²
Total area of composite figure = 84 + 58.12 = 142.12m²
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What has the largest negative impact on biodiversity.
Decide whether the sentence needs a "personal a" or not. ¿entiendes ___ las palabras de tu profesora? the "personal a" is necessary. The "personal a" is not necessary
In the sentence given, the "personal a" is:
Not necessary
So the complete sentence is:
¿Entiendes las palabras de tu profesora?
What is the "personal a"?This is Spanish grammar exercise. The "personal a" is an "a" that precedes a specific person or a person that is used as a direct object.
In the sentence given, the "a" is not used because the direct object is "las palabras" which means "the words" and it is not a person.
For example:
Adoro a mi mamá.Le llegó una carta a mi vecina.Check more information about Spanish grammar here https://brainly.com/question/5495832
Answer: B. The "personal a" is not necessary.
Explanation: On Edge.
Campsites f and g are on opposite sides of a lake. A survey crew made the measurements shown on the diagram. What is the distance between the two campsites? the diagram is not drawn to scale. The triangles are proportional.
Given that the two triangles formed are similar, the distance between the two campsites is: 37.8 m.
What are Similar Triangles?Triangles that are similar have corresponding side lengths that are proportional.
Thus:
Let x represent the distance between the two campsites
Since the two triangles formed are similar to each other, we have the following:
42/x = 82/73.8
x = (73.8 × 42)/82
x = 37.8 m
Thus, given that the two triangles formed are similar, the distance between the two campsites is: 37.8 m.
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Answer:
Explanation:
The correct answer is 42.3 (A)
47x=82/73.8
x=73.8x47/82
=42.3
Frank, who lives in texas, and his sister lilly, who lives in japan, correspond regularly. From what he can tell from the postmarks on both his and his sister’s letters, it appears that it takes longer for lilly’s mail from japan to reach him in texas than it does for his letters from texas to reach her in japan. When frank called his post office to ask if there was a reason for this, the postmaster told him that the delivery time of letters in both directions should be the same. Frank and his sister decided to collect data to see if letters from japan to texas take longer to be delivered than letters from texas to japan. They recorded the delivery time in days. After convincing themselves that the assumptions were reasonable, they performed a two-sample t-test and obtained the following computer output.
Answer:
(A) There is convincing evidence that there is no difference in the mean delivery times.
(B) There is convincing evidence that there is a difference in the mean delivery times.
(C) There is convincing evidence that the mean delivery time from Japan to Texas is greater than the mean delivery time from Texas to Japan.
(D) There is not convincing evidence that the mean delivery time from Japan to Texas is greater than the mean delivery time from Texas to Japan.
(E) The t-test cannot be used for sample sizes that are this small.
Explanation:
The correct option is;
(A) There is convincing evidence that there is no difference in the mean delivery times.
Step-by-step explanation:
Here we have the formula for the two-sample t-test given s;
To Texas N₁ = 12, =8.74 σ₁ = 2.92 SE Mean₁ = 0.84
To Japan N₂ = 9 = 6.75 σ₂ = 2.56 SE Mean₁ = 0.85
t = 1.667
Where the null hypothesis is
mu To Texas = mu To Japan and the alternative is
mu To Texas > mu To Japan
Here since the observed P value of P = 0.058 is greater than the significance level of 0.05 we fail to reject the null hypothesis and we will therefore, not accept the alternative hypothesis.
Hence, there is convincing evidence that there is no difference in the mean delivery times.
Explain the following best practices of Security.
a. Secure Transactions
b. Install firewalls
c. Use strong passwords
Answer:
a. Security transaction
Explanation:
Because the security transaction is the safest, from 2 more options
Is this statement true or false? eadweard muybridge's photographs could be animated in a zoetrope or animated and projected in a zoopraxiscope?
Answer:
Explanation:
The answer is true :3
Answer:
facts
Explanation:
dont need one-
Which expressions are in their simplest form? check all that apply
Answer:
AN EXPRESSION ARE IN THEIR SIMPLEST FORM WHERE THERE IS No TERM CAN BE COMBINED
NOTE :- Where that all apply ??
A team of 17 volleyball players needs to choose three players to refill the water cooler. How many different ways can the players be chosen?
What type of figurative language does baldwin use here?.
Answer: He uses the personification "at the mercy of his pride."
Explanation:
Answer:
It actually Simile and for the next question its A and D, thank me later !
Explanation:
I just did it on Edge 2023 and I got it right !
Diana has been offered a terrific job in another state, but she is ambivalent about uprooting her family. Which type of reasoning does not involve postformal thought?
Answer:
how much is her new job salary
Explanation:
her salary may increase or decrease depending on the job starting salary
The reason a person is sore after they lift weights is because the muscle fibers actually tear as they rebuild. True or false
