Answer:
Iced-Tea Problem
220 g of 35˚C tea (water) is poured over 250 g of -10˚C ice.
What happens...
The warm water (tea) will cool down to 0˚C. As it cools the ice will heat up to 0˚C and then start to melt.
There is plenty of ice however and only a portion of it will melt. Find the amount of ice that melts into water
and you’ll know the final composition and even the dilution factor on the tea.
Cool tea water down to 0˚C
4.184 J/g˚C · 220 g · 35˚C = 32216.8 J removed to cool tea to 0˚C
Warm ice up to 0˚C
2.09 J/g˚C · 250 g · 10˚C = 5225 J to heat ice up to 0˚C
This heat comes from the cooling water, so substract this amount off the total above
32216.8 - 5225 = 26991.8 J of heat that will MELT the ice
mass of ice melted = 26991.8 / 334 = 80.8 g of ice melted
220 g + 80.8 = 300.8 g of water
250 g - 80.8 = 169.2 g of ice
final mixture for
my glass of iced
tea all at 0˚C
220.0 g original tea
300.8 g final tea
The dilution factor is simply the original volume
over the final volume (or masses here ). = .731 or 73.1%
of the original
concentration
If I’m going to get a dilution of 73.1%, I should
compensate by mixing my tea in 26.9% LESS
volume than the directions state. So I will not dilute
the tea to 2 quarts (64 oz), but rather to 1.462
quarts (46.8 oz).
It’s hot and I want a glass of iced tea as soon as possible. The directions for my tea say to boil some water,
add 2 tea bags (these are the big bags), steep for 4-5 minutes, then add enough water to make 2 quarts which
turns out to be a pitcher of tea. However, if I make this tea the exact concentration I want now, when I pour
it over ice the ice will melt (because the tea will still be quite warm) and my tea will be too dilute. So I
calculate how much stronger I should make the tea KNOWING I will pour the warm tea over ice to make
my glass of iced tea.
(a). What is the final temperature and composition of the glass of iced-tea?
(b). What will be the concentration of the tea relative to the original concentration?
(c). How concentrated should I mix the tea knowing that it will be diluted when
poured over the ice?
(a)
(c)
(b)
only 73.1% of the full
amount to compensate
for dilution
A toy car that is 0.5 feet long is used to model the actions of
Answer:
0.5 ft / 15 ft = 1/30
The model is 1/30 the size of the actual car.
Is this correct?
Is bacteria multicellular organisms
Answer: No
Explanation:
Bacteria are usually unicellular organisms (prokaryotic).
Kids' behaviors are influenced by which of the following: (Check all that apply)
hormones
social influences
genes
parental influence
Answer:
parental influence
Ok Its coorrect hope
All of the options hormones, social influences, genes and parental influence can influence a child's behavior.
What influences child's behavior?Hormones can play a role in mood and emotional regulation, which can affect behavior. Social influences, such as the behavior of peers and cultural expectations, can also influence a child's behavior. Genes can also play a role in determining certain characteristics and behaviors.
Finally, parental influence, including the way that parents model behavior and teach and discipline their children, can also affect a child's behavior.
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What is the percentage of recorded pulse rate (62-69)
Answer:
A normal resting heart rate can range anywhere from 40 to 100 beats per minute. Below is a chart relating resting heart rate and fitness level.
Explanation:
Answer:
40 to 100 beats per minute
Explanation:
Health class in college is how I know
What is the number of chromosomes in each Meiosis I daughter cell
Answer:23 chromosomes
Explanation:
To take human being for example,
There is 46 chromosomes in a human cell, and half is from father, and the other half is from mother. We call the chromosome is a pair. We write it 2n= 46.
In the meiosis I, the chromosomes is 1n=23.
Help!!!!!!!!!
Difference between sperm and zygote
zygote is the diploid cell that results from the fertilization between an egg and sperm
sperm is the male reproductive cell that is responsible for a baby to born
ZYGOTE IS DIPLOID CELL FORM WHEN TWO GAMETE CELLS ARE JOINED BY MEANS OF SEXUAL REPRODUCTION
SPERM IS THE MALE REPRODUCTIVE CELL,OR GAMETE IN ANISOGAMOUS FORMS OF SEXUAL REPRODUCTION.
[tex]join \: bunny \: squad \\ [/tex]
[tex]just \: comment \: below[/tex]
Why are non-native, invasive species sometimes problematic for ecosystem stability?
Answer:
The bring problems with them.
Explanation:
For example if you bring a insect from over seas and it gets releast into a farm land it could kill off all the crops.
structure of the atmosphere: Beginning at the surface of the earth list in order the layers of the atmosphere
Answer:These layers are the troposphere, stratosphere, mesosphere and thermosphere.
Explanation:
quién me ayudaría a hacer este crusigrama
gracias
Answer:
Respuesta: hola ami me parece que ya lo hiciste pero te dejo ejemplos:
Explicación: 1.Venezuela
2. Sanclemente
3. Marroquin
me das corona plis chau
Explanation:
which statement about mitosis and cytokinesis is true
Answer:
At the end of cytokinesis there are two daughter cells with a normal complement of diploid genetic material.
Explanation:
hope this helps you if it does please mark brainiest
A process of transferring a fully established seedling from one place to another. What farm activity is this?
Answer:
Transplanting in your garden is another way of getting something planted or moved to the right place
what are four examples of nutrients cycled in a biogeochemical cycle
Answer:
The Gaseous cycles include those of nitrogen, oxygen, carbon, and water; while the sedimentary cycles include those of iron, calcium, phosphorus, sulfur, and other more-earthbound elements.
Explanation:
Major examples are carbon, phosphorus, nitrogen, and oxygen in nutrient cycles in the biogeochemical cycle.
What are important nutrients in the biogeochemical cycle?Most of the elements are important to flow in the ecosystem to obtain living things and their surrounding environment in a balanced state.
This cyclic flow provides energy at every level in the ecosystem, carbon is an important substance synthesis during the photosynthesis process and this plays role in energy molecule flow in a particular direction.
In the biogeochemical cycle carbon cycle, oxygen cycle, nitrogen, and phosphorus cycle flow between the living organism and nonliving matter.
Therefore nitrogen, phosphorus, oxygen, and carbon are major nutrients in a biogeochemical cycle.
Learn more about the biogeochemical cycle, here:
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Origina
DNA: CGGACACTGCTCTCCCAAGAGTATCAGTCCTCTTTAGAAGACCTGAATTCATTTCTTCTT
mRNA:
AAS:
Mutation 1
DNA: CGGACACTGCTCTCCCAAGAGTATCAGTCCTCTTTAGAAGACCTGTAACTCATTTCTTCT
mRNA :
AAS:
Mutation 2
DNA: CGGACACTGCTCTCCCAAGAGTATCAGTCCTCTTTAGAAGACCTGAGTTCATTTCTTCTT
mRNA:
AAS:
Mutation 3
DNA: CGGACACTGCTCTCCCAAGAGTATCAGTCCTCTTTAGAAGACCTGAATTCATTTTTTCTT
mRNA:
AAS:
Answer:
y is there so much letters?
Which statement about cystic fibrosis is true?
A.) Cystic fibrosis is caused by a deletion of one codon in the DNA molecule.
B.) Cystic fibrosis affects a person's ability to make normal red blood cells.
C.) Carriers have an advantage over people who do not have the cystic fibrosis mutation.
D.) Cystic fibrosis is caused by a mutation in which a dominant allele replaces a recessive allele.
Answer:D
Explanation:
It only make sense.
75 grams of salt are added to 100 ml of water. What is the concentration of the solution? *
Answer:
look at the photo I have sent
What type of organism is the tuberculosis bacterium, a multicellular or unicellular organism? Explain.
Answer:
Explanation:
Multicellular
Which of the following statements is not a characteristic of the prokaryotes.
Prokaryotes don't have a nucleus.
Prokaryotes have a cell wall.
All of the chemical processes take place in membrane bound organelles in the cytoplasm.
Answer:
All the chemical processes take place in membrane bound organelles in the cytoplasm.
Explanation:
Use the process of elimination:
One of the main things that make a prokaryote is not having a nucleus, so that can be eliminated.
Looking at the structure of bacteria, they can have a cell wall, so this is eliminated.
Therefore, “all the chemical processes take place in membrane bound organelles in the cytoplasm” is incorrect.
Also, prokaryotes DO NOT have membrane bound organelles like mitochondria, chloroplasts, or a nucleus, so this statement would also be incorrect because of this.
why are scientists obsessed with discovering water on mars ?
Answer:
Understanding the extent and situation of water on Mars is vital to assess the planet's potential for harboring life and for providing usable resources for future human exploration.
Explanation:
what can be said about altitude, atmospheric pressure, and the partial pressure of oxygen? check all that apply.
As both altitude and atmospheric pressure increase, the partial pressure of O2 will decrease.
Though I could not locate the options online to provide an exact answer, I can offer a general overview of the question at hand.
The interactions between altitude and the partial pressure of oxygen are inversely proportional. This means that as one increases, the other will decrease. The proportion of oxygen is 21% of the air content at all altitudes. However, as the altitude increases, the atmosphere becomes thinner, meaning that the partial pressure of O2 will decrease given that 21% of a thinner atmosphere results in less oxygen.
On the other hand, the relationship between atmospheric pressure and oxygen is that they are directly proportional. This means that as one decreases, the other does as well. In this case, since atmospheric pressure is the sum of the partial pressures of all gases, we can conclude that as it decreases, so to will the partial pressure of oxygen.
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Which of the following does not describe a source of greenhouse gases?
Steam of fossil fuels
Burning of fossil fuels
Freezing of permafrost
Emissions from landfills
Answer:
i think its C) Freezing of perma frost
Explanation:
The option that does not describe a source of greenhouse gases is the freezing of glaciers. Thus, the correct option is C.
What are greenhouse gases?Greenhouse gases may be defined as those gases that are present in the earth's atmosphere and trap the heat and radiation from the sun and emitted toward the earth.
Such greenhouse gases are responsible for the greenhouse effect that ultimately leads to global warming.
Steaming and burning of fossil fuels and emissions from landfills extremely liberated the high amount of carbon dioxide in the atmosphere which is one of the most potent greenhouse gas.
Therefore, the option that does not describe a source of greenhouse gases is the freezing of glaciers (hailstone). Thus, the correct option is C.
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True or False: The radius is the bone in the forearm that is on the same side as the pinky finger.
Answer:
false. ulna is on pinky side, radius is on thumb side
Explanation:
Answer:
False
Explanation:
2.3 content quiz (Anatomy Plato)
A rocket flies up into the air and returns back down to its exact spot. The displacement of the rocket is zero
true or false
Answer:
False ................
a mixed nerve consists of both __________ and ___________.
The seasons Earth experiences result from —
A. the Earth rotating on its axis while it revolves around the Sun.
B. the Earth being tilted on its axis while it revolves around the Sun.
C. the Sun moving near the Earth.
D. the Earth moving near the Sun.
Answer:
B. the Earth being tilted on its axis while it revolves around the Sun.
Answer:
Seasons occur because Earth is tilted on its axis relative to the orbital plane, the invisible, flat disc where most objects in the solar system orbit the sun. ... In June, when the Northern Hemisphere is tilted toward the sun, the sun's rays hit it for a greater part of the day than in winter.
Explanation:
your answer is B.
using your knowledge of photosynthesis, explain what is meant by the sentence “plants give us what we need and we give plants what they need.”
Who developed the classification system that contained five levels and two kingdoms?
Aristotle
Linnaeus
Whittaker
Woese
Answer:
Linnaeus
Explanation:
hope it helps
-thank you
Name a biotic factor in the room you are in right now.Name a biotic factor in the room you are in right now.
Answer:
Home plant. dogs. roses. wooden chair
Explanation:
biotic is anything that's living including plants and wood(trees)
Answer:
answer above is correct ! got it right
Explanation:
what do the roman numerals in the pedigree diagram represent?
Answer:
I think it is supposed to be generation so 1st and 2nd generation in this case.
Explanation:
Answer:
Roman Numeral stands for the generation in the family
Explanation:
https://www.cs.cmu.edu/~genetics/units/instructions/instructions-PBA.pdf
Pedigree Analysis
which is the main receptive portion of the neuron?
Answer:dendrites
The dendrites make up the receptive portion of the neuron, and receive most synaptic afferent inputs from upstream neurons. Cell body. The cell body, also the soma, is the integrative portion of the neuron, where incoming signals from dendrites are summed together.
Explanation:
brainliest pls
LAB Questions for Scientific Method Table 1 Circumference Volume Trial #1 65.4 cm Trial #2 65.3 cm Trial #3 65.5 cm Average
Explanation:
hmmm all of u stay safe
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