Osmotically active solutes are present in greater than usual concentrations in hypertonic solution.
What is hypertonic solution?
Any external solution with a low water concentration compared to bodily fluids and a high solute concentration is referred to as a hypertonic solution. Water will net migrate from the body into the solution in a hypertonic solution.
Since seawater contains more salt ions than freshwater, it is a hypertonic solution. Since the water in their cells would quickly leak into the surrounding salt water, freshwater fish cannot survive in seawater. They would quickly suffocate and perish.
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What makes the chemistry of JUUL's nicotine particularly harmful?
Answer:the liquid
Explanation: its harmful
Anti-glycolytic training avoids metabolic fatigue to ensure the primary source of energy is:____.
Anti-glycolytic training avoids metabolic fatigue to ensure the primary source of energy is: fat. Anti-glycolytic training typically involves longer, low-intensity exercises that rely on aerobic metabolism.
The primary source of energy in anti-glycolytic training is fat. This type of training aims to minimize the production of lactic acid, which is a byproduct of the breakdown of glucose. By doing so, it helps to improve fat oxidation and enhance endurance performance. Anti-glycolytic training typically involves longer, low-intensity exercises that rely on aerobic metabolism.
This approach allows the body to use fat as the primary fuel source, sparing glycogen and reducing metabolic fatigue. Overall, the goal of anti-glycolytic training is to enhance the body's ability to utilize fat for energy and improve endurance capacity.
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27/13AL+? ->> 24/11NA+4/2HE
Answer:
hhhsstyi chick to yay to today do y'all
Answer:
¹₀n
Explanation:
The given expression is:
²⁷₁₃Al + ₐᵇT → ²⁴₁₁Na + ⁴₂He
This expression is typical of nuclear reactions. To balance this expression we must conserved the mass number and the atomic number.
The mass number is the superscripts and the atomic number is the subscript;
Now;
conserving mass number:
27 + b = 24 + 4
27 + b = 28
b = 28 - 27 = 1
conserving the atomic number;
13 + a = 11 + 2
13 + a = 13
a = 0
So;
The particle T is a neutron ¹₀n
What is the molecular formula of a compound that contains 66% Ca and 34% P and
has a molar mass of 182.18 g/mol?
Answer:
Ca3P2
Explanation: find out what 66% of the molar weight of the molecule is and then find out how many moles of Ca that would be by dividing it by the molar weight of Ca
then do the same for P
How does the flow of energy during freezing compare with the flow of energy during melting
Answer:
At the melting point, some molecules overcome the forces of attraction. Energy gained after the the solid melts increases the average kinetic energy or the temperature. When liquid is freezing the energy flows out the the liquid. As the kinetic energy decreases, they move more slowly.
Explanation:
approximately how many grams of nacl can dissolve in 100 g h2o at 70oc? 38 approximately how many grams of cacl2 can dissolve in 200 ml h2o at 10oc? 130
38 grams of NaCl can dissolve in 100 grams of H2O at 70oC, while 130 grams of CaCl2 can dissolve in 200 ml of H2O at 10oC. Solubility is defined as the amount of solute that can be dissolved in a given amount of solvent at a specific temperature and pressure.
As a result, when calculating solubility, it is important to consider the temperature and amount of solvent used.NaCl is the solute, while H2O is the solvent, in the first scenario. The question asks for the quantity of NaCl that can dissolve in 100 g of H2O at 70oC. The solubility of NaCl in water varies with temperature.
As the temperature increases, the solubility of NaCl in water also increases, allowing more NaCl to dissolve in the same amount of water.At 70oC, the solubility of NaCl in H2O is 38 g/100g of water.
As a result, 38 grams of NaCl can dissolve in 100 grams of H2O at 70oC.In the second scenario, CaCl2 is the solute, and 200 ml of H2O is the solvent. At 10oC, the solubility of CaCl2 in H2O is 74.5 g/100 ml.
As a result, the maximum quantity of CaCl2 that can dissolve in 200 ml of H2O at 10oC is 2 x 74.5 g, which is 149 grams.
However, the question asks for the maximum amount of CaCl2 that can dissolve in 200 ml of H2O at 10oC, which is 130 grams. As a result, this quantity is lower than the maximum solubility of CaCl2 in H2O at 10oC, which is 149 grams. Therefore, 130 grams of CaCl2 can dissolve in 200 ml of H2O at 10oC.
To summarise, 38 grams of NaCl can dissolve in 100 grams of H2O at 70oC, while 130 grams of CaCl2 can dissolve in 200 ml of H2O at 10oC. The quantity of solute that can dissolve in a given amount of solvent is defined as solubility, which varies with temperature. As the temperature rises, the solubility of most substances in water increases, allowing more of them to dissolve in the same amount of water.
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HELP HELP
what volume of 0.150 M HCI is needed to neutralize 20.00 mL of 0.190M Ba(OH)2
Which is lower in the food chain a mushroom or a tree
a mushroom
Explanation:
it don't make sense because the tree is not food chain
Answer:
they are both primary producers so i would say they are at the same level, hope this helps
how much sodium chloride is contained in a fast-food deluxe hamburger that lists a salt content of 2.5 g?
Assuming that all the salt content in the deluxe hamburger is from sodium chloride, then the amount of sodium chloride contained in the hamburger is 2.5 grams.
Salt is composed of sodium chloride (NaCl), and the salt content listed in the deluxe hamburger refers to the amount of NaCl in the hamburger. Therefore, to determine the amount of sodium chloride, we simply use the given salt content value.
Salt content = 2.5 g
Sodium chloride is about 40% sodium by weight (the rest is chloride)
Therefore, the amount of sodium in 2.5 g of sodium chloride is:
2.5 g x 0.40 = 1.0 g
One mole of sodium weighs 22.99 g
Therefore, the number of moles of sodium in 1.0 g is:
1.0 g / 22.99 g/mol = 0.0435 mol
One mole of sodium chloride weighs 58.44 g
Therefore, the number of moles of sodium chloride in 0.0435 mol of sodium is:
0.0435 mol x (1 mol / 1 mol of NaCl) = 0.0435 mol of NaCl
Finally, the mass of sodium chloride in the hamburger is:
0.0435 mol x 58.44 g/mol = 2.54 g
So, there are approximately 2.54 g of sodium chloride in the fast-food deluxe hamburger.
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Which of the following is NOT a physical change? [Choose all that apply.]
Group of answer choices
melting ice cream
water evaporating from a puddle
making elephant toothpaste
roasting a marshmallow
mashing potatoes
burning a piece of paper
cutting wood
If a person wearing such a mask exhales 0.65g of co2 every minute, calculate the number of grams of o2 that will be produced in 15 minutes.
To calculate the number of grams of O2 produced in 15 minutes, we need to find the ratio of CO2 produced to O2 consumed. The molar ratio of CO2 to O2 is 1:1, meaning that for every gram of CO2 produced, one gram of O2 is consumed.
Given that the person exhales 0.65g of CO2 every minute, we can assume that the person consumes 0.65g of O2 as well. Therefore, in 15 minutes, the person will exhale (0.65g/min) x (15 min) = 9.75 grams of CO2. Since the molar ratio of CO2 to O2 is 1:1, we can conclude that the person would also consume 9.75 grams of O2 in the same timeframe.
By assuming a molar ratio of 1:1 between CO2 and O2, we can calculate the number of grams of O2 produced in 15 minutes when a person exhales 0.65g of CO2 every minute.
Multiplying the CO2 production rate by the number of minutes gives us 0.65g/min x 15 min = 9.75 grams of CO2 produced in 15 minutes. As the molar ratio between CO2 and O2 is 1:1, this also means that 9.75 grams of O2 would be consumed in the same time period. This calculation assumes that the person is exclusively exhaling CO2 and consuming O2 at a constant rate without any other factors affecting the gas exchange process. It's important to note that this is a simplified calculation and real-world physiological processes may involve more variables.
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The pressure exerted by 0.002 moles of a gas in a 500 mL container at 25oC is:
Answer:
0.1715 atm
Explanation:
We use the Ideal gas equation to calculate this
Mathematically;
PV = nRT
rearranging, we have
P = nRT/V
from the question, we have
n = 0.002 moles
R = 0.082
T = 250 = 250 + 273 = 523 K
V = 500 ml = 500/1000 = 0.5 L
Plugging the values we have;
P = (0.002 * 0.082 * 523)/0.5
P = 0.1715 atm
combining which of the following substances with germanium will cause the germanium to emit free electrons? question 19 options: a) bismuth b) gallium c) indium d) aluminum
The substance combined with germanium that will cause the germanium to emit free electrons is the aluminum. Correct answer: letter D.
Adding aluminum to germanium will cause the germanium to emit free electrons. This is because aluminum has one more electron in its outermost shell than germanium does. When the two atoms are combined, the extra electron from the aluminum will fill the outermost shell of the germanium atom, and the germanium atom will then become unstable and emit an electron.
What are aluminum and germanium?Aluminum and germanium are elements of the periodic table. Some similarities between the two are:
Both are metals with similar properties. Both are good conductors of electricity and heat. Both are used in the electronics industry.Learn more about the germanium:
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How is earths surface most likely to change in a cold place that experiences rainfall
Cold regions that experience rainfall are likely to undergo surface changes such as erosion, deposition, and the formation of water bodies, leading to unique and diverse ecosystems.
In a cold place that experiences rainfall, the most likely surface changes to occur are related to erosion and deposition processes. Cold temperatures can cause water to freeze and expand, leading to the formation of cracks in rocks and soil. When these cracks are exposed to rainfall, water can penetrate and cause further erosion. Additionally, rainfall can also lead to the formation of streams and rivers, which can carve out valleys and gorges over time.
During heavy rainfall, water can accumulate in low-lying areas, leading to the formation of wetlands and lakes. Conversely, during periods of drought, these areas may dry up and form barren deserts or mudflats. In colder regions, rainfall may also contribute to the formation of glaciers, which can cause significant changes to the landscape over long periods of time.
Overall, in cold regions that experience rainfall, the most likely surface changes are related to erosion, deposition, and the formation of water bodies. These processes can significantly alter the landscape and create unique environments that support diverse ecosystems.
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Patience, a popular card game in Mendeleev's time, is also known as Go Fish.
A. True
B. False
Answer:
B. False
Explanation:
step by step explanation
Answer:
False
Explanation:
kay why ess (heart) (heart)<3 respectfully
Answer:
help me with my new question its science i got like 2 hrs left fr
Explanation:
If 38.55 mL of HCl is required to titrate 2.150 g of Na2CO3 according to the following equation, what is the molarity of the HCl solution? Na2CO3 + 2HCl (aq)→ 2NaCl (aq) + CO2 (g) + H20 (1)
The molarity of the HCl solution : 1.052 M
Further explanationGiven
Volume of HCl = 38.55 ml
mass of Na₂CO₃ (MW=106 g/mol)=2.15 g
Reaction
Na₂CO₃(aq) + 2HCl (aq)→ 2NaCl (aq) + CO₂ (g) + H₂0 (l)
Required
The molarity of the HCl solution
Solution
mol Na₂CO₃ :
\(\tt mol=\dfrac{mass}{MW}=\dfrac{2.15}{106}=0.02028\)
From the equation, mol ratio Na₂CO₃ : HCl = 1 : 2, so mol HCl :
\(\tt mol~HCl=2\times 0.02028=0.04056\)
The molarity :
\(\tt M=\dfrac{n}{V}=\dfrac{0.04056}{0.03855~L}=1.052~M\)
What is the concentration of a solution in
which 60 g of NaCl are dissolved in 1.0 L of water?
Answer:
6%
Explanation:
60 g / 1000 g = 6%
The concentration of a solution in 60 g of NaCl are dissolved in 1L of water will be 6%.
What is concentration?The abundance of an ingredient ratio of the volume of a combination is called concentration. Mass concentration, molar concentration, number concentration, and volume concentration are all examples of mathematical descriptions.
Concentration can be calculated as:
C=m/V.
where, C is concentration , m is mass and V is volume.
It is given that, m = 60 g and V = 1L or 1000 mL.
Now, put the value of given data in above equation.
C= 60/1000
=6%.
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How
many
moles of water are produced from 12.8 moles of oxygen?
with work
Answer:
12.8 moles
Explanation:
The formula for water is H2O, so for every mole of water, there are two moles of hydrogen and one mole of oxygen.
As the ratio of oxygen particles to water particles is one to one, 12.8 moles of oxygen are required to produce 12.8 moles of water.
Therefore, 12.8 moles of water are produced from 12.8 moles of oxygen (assuming hydrogen is available in excess).
_____ refers to acting or presenting oneself in a specific way so as to accomplish some goal.
A goal is defined as an objective or target that someone is trying to achieve. A goal is an aim or objective that you work hard toward with effort and determination. Here performative accomplish the goal.
Self-presentation refers to how people attempt to present themselves to control or shape how the audience view them. Acting or presenting oneself in a specific way so as to accomplish some goal is known as performative.
The performative utterances are sentences which not only describe a given reality, but also change the social reality they are describing.
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are there more tissues or more organs in your body?
Answer:
there are 78 organs and 4 tissue in the body so organ
help me, please, i need it
Answer:
I think the answer would be C.
Explanation:
Microwaves emit radiation onto the leftover food, meaning the heat transfers to it through radiation.
NEED ANSWER ASAP HELP!!!!
Answer:
1. 4 Km
2. 40 minutes
3. 0.1 Km/min
Explanation:
1. Determination of the total distance travelled.
From the graph given in the question above, we can see that the total distance travelled by the object is 4 Km since the path taken by the object in the graph ends at the 4 km mark.
2. Determination of the Time taken.
A careful observation of the graph given in the question shows that the entire trip took 40 minutes since the distance travelled by the object ends at the 40 minutes mark on the graph.
3. Determination of the average speed of the object.
Total distance = 4 Km
Total time = 40 mins
Average speed =..?
Average speed = Total distance / total time
Average speed = 4 / 40
Average speed = 0.1 Km/min
the following reaction is a net of carbon? a. not a redox b. oxidation c. reduction
The net reaction of carbon is a reduction reaction because carbon gains electrons. Hence, option c. reduction is the correct answer.
A reduction reaction refers to a chemical reaction in which a molecule, ion, or atom gains electrons. In contrast, an oxidation reaction refers to a chemical reaction in which a molecule, ion, or atom loses electrons. Carbon reacts with oxygen to produce carbon dioxide as follows:
2C(s) + O2(g) ⟶ 2CO2(g)
The carbon atoms in carbon dioxide have an oxidation state of +4 since each carbon atom is bonded to two oxygen atoms, which are more electronegative than carbon, and the C–O bonds are polar covalent.
However, in the process, the carbon atoms gain electrons to form carbon dioxide, which is a reduction reaction.
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CALCULATE THE RMM OF , CA(OH)2, AL2SO4.
Answer:
The RMM of Ca (OH)2 is
40+ (16+1)2
40+(17)2
40+34
74
The RMM of Al2SO4 is
(27×2)+32+(16×4)
54+32+64
=150
Explanation:
Note that the RAM of:
Ca=40
O=16
H=1
Al=27
S=32
Halogen atoms deactivate the aromatic ring towards electrophilic substitution. Based on their electronegativity, rank the halogens by their deactivating power. The strongest deactivator is 1, and the weakest deactivator is 4. a. I___
b. Br____
c. F____
d. CI____
The strength of their deactivating power can be ranked as follows:
a. I (strongest deactivator)
b. Br
c. Cl
d. F (weakest deactivator)
The halogens can deactivate the aromatic ring towards electrophilic substitution due to their high electronegativity and ability to withdraw electron density from the ring. The strength of their deactivating power can be ranked as follows:
a. I (strongest deactivator)
b. Br
c. Cl
d. F (weakest deactivator)
This is because iodine has the largest atomic size and the lowest electronegativity among the halogens, making it the most effective at withdrawing electron density from the ring.
Fluorine, on the other hand, has the smallest atomic size and the highest electronegativity, making it the weakest deactivator among the halogens.
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CHemistry middle school please help
The characteristics of a certain group of elements as listed are those of strontium.
The correct option is D.
Which of the elements is in this group with given properties?Elements in the Periodic Table are organized into groups and periods.
Elements in the same group have the same number of valence electrons.
Elements in the same period have the same number of electron shells.
The characteristics of a Group of Elements are given below
. Is shiny
• Is solid at room temperature
• Has atoms with two valence electrons, hence belongs to group 2.
The above element is strontium since it is the only element in group 2.
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During a transillumination of a scrotum, you note a nontender mass that transilluminates with a red glow. This finding is suggestive of:
The finding of a nontender mass that transilluminates with a red glow during a transillumination of a scrotum is suggestive of a hydrocele.
A hydrocele is a collection of fluid in the tunica vaginalis, a layer surrounding the testis. When light is shone through a hydrocele, the fluid allows for easy transmission of light, creating a red glow. A hydrocele may be congenital or acquired and can occur on one or both sides of the scrotum. While hydroceles are usually painless, they can sometimes cause discomfort or a feeling of heaviness in the scrotum. Hydroceles that develop in adult men may be due to underlying conditions such as infection, injury, or inflammation. Treatment may involve drainage of the fluid or surgery to remove the hydrocele sac.
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What is the molarity of 4 mol of NaOH dissolved in 2 L of water? O A. 0.5 M OB. 8 M O C. 2M D. 4 M
Answer:
concentration = mol/volume = 4/2 = 2M
Sodium chloride is dissolved in water.
Which ions are present in the electrolyte?
Answer:
Na+
Cl-
H+
OH-
Explanation:
NaCl + H2O -----> Na+. Cl- + H+ OH-