Potassium thiosulfate (K2S2O3) is used to remove any excess chlorine from fibers and fabrics that have been bleached with that gas. The reaction is K2S2O3 + 4Cl2+ 5H2O→2KHSO4 + 8HCl a. What mass of HCl will be produced at the same time that 45.0 g of KHSO4 is produced? (5 pst) b. What mass of Cl2 is consumed along with 2.20 x 1024 molecules of H2O? (5 pts)
Answer:
The correct answer is a) 48.16 grams of HCl will be produced, b) mass of chlorine consumed is 206 grams.
Explanation:
a) The reaction given is:
K₂S₂O₃ + 4Cl₂ + 5H₂O ⇒ 2KHSO₄ + 8HCl
Based on the given information, the mass of KHSO4 is 45 grams. The moles of KHSO4 can be determined by using the formula,
Moles = given mass/Molar mass
= 45/136.16
= 0.33 Moles of KHSO₄
From the reaction it can be seen that when 2 moles of KHSO₄ is produced, 8 moles of HCl is also produced. Therefore,
2 moles of KHSO₄ = 8 moles of HCl
So, moles of HCl will be,
Moles of HCl = 8 × 0.33/2
= 1.321 moles
Now the mass of HCl is,
Mass of HCl = Moles of HCl × Molar mass of HCl
= 1.321 × 36.46
= 48.16 grams of HCl
b) It is known that 1 mole is equal to 6.023 × 10²³ molecules
In the given case, the molecules of water is given, that is, 2.20 * 10²⁴ molecules. Now let us consider that the moles of water is x.
x mole of water = 2.20 × 10²⁴ /6.022 × 10²³
= 3.653 mole of H2O
From the reaction given, it can be seen that when 5 moles of water are consumed, 4 moles of chlorine are consumed.
5 moles of water = 4 moles of chlorine
3.653 moles H₂O = x moles of Cl₂
Moles of Cl₂ = 4 × 3.653 /5
= 2.906 moles Cl₂
Now the mass of Cl₂ determined as,
Mass of Cl₂ = moles of Cl₂ × Molar mass of Cl₂
= 2.906 × 70.9
= 206 grams
What is a way that society controls science?
Answer:
I think it's D. Governments give research funding.
A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a________
I need help. I am currently taking the test in Edg. If u are correct, I will mark u Brainliest! :)
Answer:
sufficient root system that can support the plant's growth
Answer:
The answer is a: cuticle
Explanation:
The cuticle is a waxy, water-repellent layer found on the outer covering of plants that prevents injury and water loss.
Ecosystems have producers, decomposers, and composers. Carnivores and scavengers are both types of consumers in an ecosystem. Which of the following is a characteristic of scavengers that make them different from carnivores?
A.) Scavengers eat only plant materials
B.) scavengers are omnivores that always eat live animals
C.) scavengers are omnivores that eat dead plants and animals.
D.) scavengers are able to produce their own food when no other food is available.
Answer:
a
Explanation:
A species of eels that lives in the ocean can move up rivers to spawn. A freshwater pike is unable to move into the ocean from a river. Based on your knowledge of cellular membranes, explain why eels can move back and forth into the ocean, whereas pike cannot.
Answer:
Eels are a long, thin slimy fish that have a fin that runs the entire lengths of the backs of their bodies, extends around the tail and run for a distance on the underside of the fish. They have a wide and strong mouth. The pike has a long, slender body that is olive green in color and fades to yellowish-white on its belly. The reason for this is because they have diffrent bodies and a eel is small while pikes are big and have more weight.
Explanation:
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What is the second most abundant element on earth and seems to be very important in biological processes such as oxygen transportation in the body and cellular respiration
Answer:
iron
Explanation:
Cellular respiration may be defined as the group of metabolic processes as well as reactions which occurs in the cells of the organisms that converts the chemical energy from the oxygen molecules or from nutrients into ATP or adenosine triphosphate and then releases the waste products. Thus it breaks the glucose and produces the ATP. Iron is an important element which are used in many important biological processes in the body like the cellular respiration and oxygen transportation.
like not to get political or anything but wth
is oatmeal
Answer:
i feel like its a form of soup
Explanation:
Answer:
Dry Breakfast lol
Explanation:
Air pressure and air temperature ______ with altitude. a Stay the same
b increase
c decrease
d none of the above
How do plant cells differ from animal cells
Answer: Plant cells have chlorophyll, chloroplasts, cell walls, a more blocky shape, and larger vacuoles. Animal cells have a more rounder shape, no cell wall but only a cell membrane, smaller vacuoles, and other organelles such has centrosomes, which plant cells don’t have.
Explanation:
Answer:
Plant and animal cells are different in that plant cells have chloroplasts and rigid cell walls, while animal cells do not.
What are the functions of proteins?
Answer:
the function for proteins:
Repair and Maintenance.
Energy.
Hormones.
Enzymes.
Explanation:
Explanation:
Proteins are a class of macromolecules that perform a diverse range of functions for the cell. They help in metabolism by providing structural support and by acting as enzymes, carriers, or hormones. The building blocks of proteins (monomers) are amino acids.
list two examples of temporary change in human
Answer:
#IN GIRLS
* adolsence
* menstruation
#IN BOYS
* penis strts turning big
*beard starts coming of face
Answer:
Changes in humans
Explanation:
Girls develop breast and start their period.
Where as boys develop a deeper voice and facial hair will start to appear.
WILL MARK BRAINLIEST FOR FIRST ANSWER
A DNA sequence is shown.
CTG - GAG - CAT
Which sequences show the result of an insertion mutation in the DNA? Check all that apply.
A.CTG - GGC - AT
B. CTG - TAT - CAT
C. TTG - GAG - CAT
D. CTA - GGA - GCA - T
E. CTG - GAG - TCG - AT
Answer:
CTA - GGA - GCA - T and CTG - GAG - TCG - AT
Explanation:
Pls mark brainliest
Answer:
CTA - GGA - GCA - T and CTG - GAG - TCG - AT is correct the guy above is very smart
Explanation:
are all qnswer right
Answer:
yes good job!
Explanation:
Answer:
Explanation:
Yes great job
Why is it difficult to know the impacts of deep sea mining?
O It has never been tried successfully, so we don't know exactly how it can be done.
Olt is only done in environmentally sensitive areas, where the organisms are being harmed in many ways already, and it is difficult to know the effects of mining.
We know relatively little about deep sea ecosystems, making it harder to assess the impact of mining.
O Most countries have laws against it, so the impacts have not been tested.
Answer:
I'm pretty sure its...
Explanation:
We know relatively little about deep sea ecosystems, making it harder to assess the impact of mining.
Deep sea mining has never been tried successfully, so we don't know exactly how it can be done so it is difficult to know the impact of deep sea mining.
what is deep sea mining?The process of extracting and often excavating mineral deposits from the deep seafloor is known as deep-sea mining.
The deep bottom spans around two-thirds of the total seafloor and is found at ocean depths greater than 200 meters.
Deep-sea mining has been shown to affect marine biodiversity and ecosystems, but we still lack the knowledge and resources to safeguard them.
There are considerable gaps in our understanding of the deep sea's biodiversity and ecosystems since it is still understudied and poorly understood.
This makes assessing the possible effects of deep-sea mining and putting in place necessary safeguards to protect the marine ecosystem and the three billion people whose livelihoods rely on marine and coastal biodiversity challenging.
Hence , the correct option is A.
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Which process uses the sun's energy to convert water on Earth's surface into water vapor? (3 points)
a
Condensation
b
Evaporation
c
Precipitation
d
Transpiration
Answer:
Evaporation is the answer to your question
how are hurricanes started? rain
snow
thunderstorms
sleet
Answer:
A pre-existing weather disturbance: A hurricane often starts out as a tropical wave. ... Thunderstorm activity: Thunderstorms turn ocean heat into hurricane fuel. Low wind shear: A large difference in wind speed and direction around or near the storm can weaken it
Explanation:
Answer:
and wind
Explanation:
[____________] is the material or energy that goes into a system
Answer:
Solar energy
Explanation:
In the periodic table, vertical columns are called periods.
TRUE
FALSE
Answer:
FALSE
Explanation:
In the periodic table, vertical columns are called GROUPS.
This is a FALSE statement
The horizontal rows on the periodic table are called periods.
If an object such as a toaster is unplugged, should it be under the category of mechanical energy or electrical energy?
Answer:
electrical energy
Explanation:
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Which statement best summarizes how the light-dependent reactions and light-independent reactions (Calvin cycle) work together during photosynthesis
The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose
The light-dependent reactions capture energy and the light-independent reactions use that energy to make ATP
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make ATP
The light-dependent reactions capture bees and the light-independent reactions blend those bees up into golden cheddar mac and cheese... watch
out for the stingers though
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make energy in the form of
sunlight
The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose
The energy captured in the light-dependent reactions is stored in ATP and NADPH and is used in Calvin's cycle to fixateCO2 in order to synthesize glucose
Which statement describes how heat flows from the coffee to the part of the spoon in the coffee?
Heat flows from the coffee to the spoon through radiation.
Heat flows from the coffee to the spoon through convection.
Heat flows from the coffee to the spoon through conduction.
Heat flows from the coffee to the spoon through radiation, convection, and conduction.
Answer:
C. Heat flows from the coffee to the spoon through conduction.
The heat movement known to move from one area to elsewhere has been called heat transfer. Thermal conduction allows the coffee's heat to reach the spoon. Thus, option C is correct.
What is thermal conduction?A type of heat transfer called thermal conduction occurs when heat flows from one spot to some other place due to the disparity in temperatures between the bodies.
When a body is subjected to thermal conduction, heat energy is dissipated from the body towards the colder or less heated objects. Because the spoon and coffee are at different temperatures, the heat from the coffee is passed to the spoon through conduction.
Therefore, thermal conduction is the process through which the coffee heats the spoon in the cup.
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help me please!!
the thing is 42 points it’s the most i could put
Answer: I
Explanation:
I’m pretty sure the answer is i
Answer:
h
Explanation:
Please help me this is hard for me
Answer:
D
Explanation:
It is the bottom of the food chain
Answer:
D
Explanation:
It produces food for other animals
Meiosis results in?
Answer:
It results in the reduction of chromosomes by half and produces four gamete cells. And those four cells are the result and known as the daughter cells.
Explanation:
What is the cisterna chyli
Answer:
the cisterna chyli is the dilated origin of the thoracic duct, which receives the right and left lumber lymphatic trunks and the intestinal lymphatic trunk.
Music > color should be read as: a. music on color c. music to color b. music before color d. music then color Please select the best answer from the choices provided A B C D
Answer:
C
Explanation:
The maximum number of individuals that an environment can support is called the ___. A)population density B)Competition Factor C)density Independent factors D)carrying capacity
Answer:
D
Explanation:
Answer:
D
Explanation:
Population density is how dense a population is or how to spread out it is. Though carrying capacity is how much a thing such as land can carry such as lifeform and organisims.
If you were to find a clean well-sorted sandstone what geologic events may have caused this? How are these events different from those that form an arkose?
Answer: Arenite
Explanation:
Arenite can be defined as the sedimentary clastic rock.
It is of the sand grain size.
It also comprises of matrix.
It is a metamorphosed sediment.
Arenite is formed by the erosion of the turbiditic re-deposition of the sands. It belongs to silicatic limestones.
Which of the following is a benefit of genetic engineering to humans?
Reducing diversity of organisms
B
Developing medicines for humans
Decreasing the yield of crops
Producing foods with low nutritional value
11
Sea otters move into the ocean bay. The eat all the sea urchins. This change will cause the
A. Kelp to have less food
B. crabs to have less food
C. Sea ducks to have more food
D.Arctic foxes to have more food
The presence of sea otters in an ocean bay will result in a reduction in the amount of food available to carbs because they feed on sea urchins. Therefore, option (B) is correct.
What is food chain?The linear relationship between creatures that demonstrates how they obtain energy by feeding on one another is referred to as the food chain.
The information provided in this inquiry suggests that sea otters migrate into the ocean bay and consume all of the sea urchins there.
This leads one to believe that they cut down on the food supply of another eater of urchins, such as carbs. Because of this, the introduction of sea otters into the ocean bay will result in there being less food available for carbs.
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