Answer:
I am assuming you want it balanced?
НЗРО4 +
3KOH ->
3Н2О +
KЗРО4
Explanation:
A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur. Solution A: 2.37 % (m/v) NaCl Solution B: 0.59 % (m/v) glucose Solution C: distilled H2O Solution D: 9.39 % (m/v) glucose Solution E: 5.0% (m/v) glucose and 0.9% (m/v) NaCl
Answer:
A: 2.37 % (m/v) NaCl Solution: crenation.
B: 0.59 % (m/v) glucose Solution: hemolysis.
C: distilled H2O Solution: hemolysis.
D: 9.39 % (m/v) glucose Solution: crenation.
E: 5.0% (m/v) glucose and 0.9% (m/v) NaCl: neither.
Explanation:
A red blood cell should be placed in an isotonic solution to avoid crenation or hemolysis. An isotonic solution has the same solute concentration as the one in the interior of the cell. As a result, the solvent does not have to move toward the place with a higher solute concentration to balance it.
When the red blood cell is in a solution that has a higher concentration of solutes than the one inside the cell, in other words, the cell is in a hypertonic solution. The solvent will flow from the cell to the solution causing a crenation of the cell.
When the red blood cell is in a solution with a lower solute concentration than the one inside the cell, also known as a hypotonic solution. The solvent will flow from the outside to the inside of the cell. As a result, the cell suffers hemolysis.
The isotonic solution for the cell should be 5.0% (m/v) glucose and 0.9% (m/v) NaCl, to avoid crenation or hemolysis.
When is a thunderstorm most intense
A mature stage
B dissipating stage
C wage stage
D cumulus stage
Answer:
rjdudhjwjwjiwiwiwjshdhjwiaishhw
Is oxygen with 10 total electrons an atom or an ion
Answer:
Since two extra electrons are added, it is denoted by O2- hence it's an ion.
This is for science! I really need help.
Answer
Solid
liquid
Gas
Explanation:
Where does the light that makes the moon visible come from?
A. another planet
B. the moon
C. Earth
D. the sun
hydroxide, express your answer in a chemical formula
Answer:
OH⁻
Explanation:
Hydroxide is represented as OH⁻, since it is specifically the oxygen atomic that is specifically connected to a central metal ion of Fe, never hydrogen, which means that it could be represented as OH⁻.
OH⁻ is the chemical formula for hydroxide, since it is specifically the oxygen atomic that is specifically connected to a central metal ion of Fe, never hydrogen, which means that it could be represented as OH⁻.
A chemical formula is a way to describe the chemical ratios of the atoms that make up a specific chemical compound or molecule in chemistry. Chemical element numbers, symbols, and on occasion other symbols, including parentheses, dashes, brackets, commas, and plus (+) and minus () signs, are used to represent the chemical elements. Which may also include subscripts or superscripts. Since a chemical formula inherently wordless, it cannot be considered a chemical name. A chemical formula does not equal a complete chemical structural formula, despite the fact that it may suggest certain basic chemical structures. Hydroxide is represented as OH⁻.
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Sofia goes on a hike on a trail that is 10 km long. She starts at 2:00pm and ends at
5:00pm. The end of the trail is 300m north of the beginning of the trail. What is
Sofia's average velocity?
(Velocity= displacement/time)
100 m/hr S
30 m/hrs
0.01 m/hrs
3.3 m/hr s
Answer:
100 m/hr S
Explanation:
Use formula Velocity = displacement/time
V=? d=300 t=3
V=300/3
V=100
Hope this helps!! :D
Sofia's average velocity is 100 m/hrs using the velocity formula which is displacement/time.
What is average velocity?Speed of an object refers to the change in position of that object concerning time. Velocity on the other hand is nothing, but the speed defined concerning the direction in which an object travels.
Average velocity according to the definition is the ratio of the displacement from point a to point b of an object to the time it takes to make that displacement from point a to point b. It may be noted that we use the term movement instead of distance to emphasise the direction.
Velocity is a vector quantity and average velocity can be found by dividing displacement by time. It is found out as, 300/3=100 m/hrs.
Thus, Sofia's average velocity is 100 m/hrs using the velocity formula which is displacement/time.
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why
do real gases
divrate from the
Ideal
gas
law
This planet is about the size of Earth. It has a very thick atmosphere with
a lot of gases. The surface temperatures and pressures are extremely
high.
Which planet does this describe?
Answer:
Venus
Explanation:
Mars has a thin atmosphere
Saturn is really cold (-288F)
Mercury has no atmosphere
Soda pop is carbonated with CO2. Mark puts one bottle of soda pop in the refrigerator and leaves the other out in the hot sunlight. After one hour, he opens both bottles. Which bottle will likely have more fizzing and bubbles? Why?
Answer:
The one left in the hot sunlight.
Explanation:
The solubility of gases decreases when temperature increases. The gas in the soda pop (CO2) left in the sun will not stay dissolved as much as the on left in the refrigerator.
Soda is a carbonated drink with soda or water and a sweetener. Soda pop in the fridge will have more fizzing and bubbles.
What is carbonated?Carbonated drinks are drinks or beverages that contain dissolved carbon dioxide. They have small bubbles and fizz of the carbon dioxide present in them.
Carbonation of the drinks is linked to the temperature as at high temperature, liquid tends to lose the carbon dioxide fizz. The carbon dioxide bubbles are retained at low temperatures as the solubility of the carbon dioxide is increased.
Therefore, the bottle kept in the refrigerator will have more bubbles and fizz.
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A wave is a ______ that carries ______ from one place to another?.
Answer: disruption and energy
Explanation:
Answer: disturbance; energy
Explanation:
How many moles of a gas would be held by a 6 L container of nitrogen gas at 2 atm and 300 Kelvin?
Answer:
I think you would have to multiply 6 times 2, which it equals 12. And then just divide it by 300, and that's your answer. Hope I was able to help!
Explanation: Have a good day!
The table shows the temperature and pressure of five-liter samples of four different gases. Which two gas samples do not have the
same number of molecules?
Answer:He2 & O2
Explanation:
Answer:
Answer:A
Explanation:
wright it in 500 words Submit your persuasive essay about nuclear power. Remember to proofread your work before submitting.
Answer:
Explanation:
Introduction Paragraph. Hook. Background Points. Thesis Statement.( done)
Body Paragraph. Topic Sentence. Supporting fact 1. Supporting fact 2. Transition Sentence.(done)
Conclusion Paragraph. Re-statement of Thesis. Summary of Main Point. Challenge to the Reader.( done)
2. How do chemical weathering and deposition contribute to the formation of the features shown here?
answer asap
Answer:
Explanation:
Chemical weathering of rocks and minerals is a key factor that mitigates acidic deposition and affects water chemistry. It supplies cations and alkalinity to the surface water, groundwater, ion-exchange complex, and vegetation in the watershed.
Hopefully this will help
The most important commercial ore of chromium is chromite (FeCr2O4). One of the steps in the process used to extract chromium from the ore is the reaction of chromite with coke (carbon) to produce ferrochrome (FeCr2). 2 C(s) FeCr2O4(s) FeCr2(s) 2 CO2(g) What mole ratio would you use to convert from moles of chromite to moles of ferrochrome
Answer:
1 mole FeCr2/ 1 mole FeCr2O4
Explanation:
We have to write down the equation of the reaction before we can answer the question;
2C(s) + FeCr2O4(s) -------> FeCr2(s) + 2CO2(g)
By inspection of this reaction equation, we can clearly see that the mole ratio of the reactants and products is 2:1:1:2.
Specifically, the ratio of chromites to ferrochrome is 1:1
Hence;
The mole ration required to convert chromites to ferrochrome is;
1 mole FeCr2/ 1 mole FeCr2O4
What is the volume (in mL) of glacial acetic acid (17.4 M) that would have to be added to 500 mL of a solution of 0.20 M sodium acetate in order to achieve a pH of 5.0
Answer:
3.16mL of glacial acetic acid must be added
Explanation:
The mixture of acetic acid with sodium acetate produce a buffer. The buffer follows the H-H equation:
pH = pKa + log [A⁻] / [HA]
Where pH is the pH of the buffer: 5.0
pKa is pKa of the buffer = 4.74
[A⁻] could be taken as moles of acetate ion = 0.500L * (0.20mol/L) = 0.100mol
And [HA] are moles of acetic acid.
Replacing:
5.0 = 4.74 + log [0.100mol] / [HA]
0.26 = log [0.100mol] / [HA]
1.8197 = [0.100mol] / [HA]
[HA] = 0.100mol / 1.8197
[HA] = 0.05495 moles of acetic acid
As the glacial acetic acid is 17.4M, the volume we must add to prepare the buffer is:
0.05495 mol * (1L / 17.4mol) = 3.16x10⁻³L =
3.16mL of glacial acetic acid must be added
Classify each chemical reaction:
reaction
1. CH3CH2OH(f) → 3O2g + 2CO2 + 3H2Og
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
2. MgI2 (aq) + Pb(NO3)2(aq) → Mg(NO3)2(aq) + PbI2(s)
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
3. 16Ks + S8s → 8K2 + Ss
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
4. CH4g + 2O2g → CO2g + 2H2Og
a. combination
b. precipitation
c. single replacement
d. combustion
e. double replacement
f. acid-base decomposition
Answer:
1) combustion
2) double replacement
3) combination
4) combustion
Explanation:
The combustion of a compound refers to the reaction of that compound with oxygen to produce heat and light. In reactions (1) and (4) above, ethanol and methane reacted with oxygen to yield carbon dioxde and water. This is a combustion reaction.
Reaction(2) is a double replacement reaction because the both cations exchange their anion partners in the product.
Reaction (3) is a combination reaction. It involves the joining of two elements to form a new compound.
an affect of climate change that is a hydrometeorological event
Answer:
An another result of climate change is the increasing in the frequency of high intensity rainfall events,which increase the regional water damage events.If the precipitation volume decreases in summer time and increases in winter time,then it will be lower infiltration and more runoffs.
Severe hydro-meteorological activities, including heavy precipitations or lack thereof, floods, and droughts, are becoming greater excessive and common because of weather exchange and can strongly affect water first-rate.
What are the common impact of hydrometeorological hazards on the environment?Hydrometeorological hazards, such as floods, droughts, landslides, and hurricane surges, can pose an instantaneous risk to lives and impact livelihoods by way of detrimental and destroying transport links, power components, agencies, and agricultural land.
Hydrometeorological dangers are a result of extreme meteorological and climate events, along with floods, droughts, hurricanes, tornadoes, landslides, or mudslides.
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A Question 2 (2 points) Retake question
Potassium chlorate decomposes into potassium chloride and oxygen gas according to
the following equation:
2 KClO3 --> 2 KCl + 3 02
Use the equation above to answer the questions that follow:
How many moles of oxygen will be produced from the decomposition of 276 g of
potassium chlorate?
Do not put the answer in scientific notation. Do not include the substance as part of
your unit. Units should be all lowercase letters and singular (not plural) and no
spaces among units. You will choose from the following units:
Answer:
3.3765 Mol O2
Explanation:
There is no work for this problem
what happens to ammonia when reacts with heated sodium?
Answer:
When dry ammonia is passed over heated sodium in absence of air, the product formed is sodium amide. - When dry ammonia is passed over heated sodium in absence of air, sodium amide is produced. - Sodium amide aka sodamide is mainly used as a strong base in organic chemistry.
Explanation:
Photosynthesis is a cell process used by various organisms. Which of the following best
describes the process of photosynthesis? (SC.8.L.18.1)
A.Carbon dioxide and water are turned into sugar and oxygen.
B.Sugar and oxygen are turned into water and carbon dioxide.
C.Oxygen and carbon dioxide are turned into water and sugar.
D.Water and sugar are turned into oxygen and carbon dioxide.
Answer:
Carbon dioxide and water are turned into sugar and oxygen
Which type of decomposer can produce chemicals that are harmful to plants?
O aerobic microorganisms
O earthworms
O centipedes
O anaerobic microorganisms
What is the percent yield if the theoretical yield of ChCl3 is 14.50 g but the actual yield is 12.33 g?
Percentage is a ration of part to a whole. In our case, in perfect conditions, yield is theoretical and thusly considered larger, a whole. While actual yield is less because of imperfect conditions. The percentage is,
[tex](12.33\cdot 100)/14.5\approx85.03\%[/tex].
Hope this helps.
Answer: 85.03%
Explanation:
Percentage yield = (actual yield/ theoretical yield) x100
so: (12.33/ 14.50)x 100
= 85.0344827586
as earth cooled and formed a planet, LESS dense elements and compounds separated and formed layers around a DENSE core. Is this true or false?
Answer:
True
Explanation:
The core of the earth is very dense so that leads me to beleive that the answer is true.
what does not affect the speed of an object that is pushed?
Answer:
balanced forces do not affect the motion of the object.
Explanation:
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The dependent variable in an experiment
A.never changes
B.will vary according to the temperature
C.shows changes during the experiment.
D.is always the larger value.
Answer:
C
Explanation:
A sample of 7.34 g of solid calcium hydroxide is added to 34.5 mL of 0.380 M Aqueous hydrochloric acid.Write the balanced chemical equation for the reaction. Physical states are optional.
Answer: [tex]Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)[/tex]
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.
The balanced chemical equation is:
[tex]Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)[/tex]
HELPPPPP PLEASE!!!
What heats the mantle?
A.radiation in the crust heats the mantle through convection
B.convection in the crust heats the mantle through conduction
C.radiation in the core heats the mantle through conduction
D.convection in the core heats the mantle through conduction
A student increases the temperature of a 200 cm3 balloon from 60°C to 100 °C.
What will the new volume of the balloon be? Round your answer to one decimal
point.
(to convert Celsius to Kelvin, add 273.15)
Answer?
Answer:
178.56 cm3
Explanation:
V1/T1=V2/T2
V2=V1T1/T2
V1 (volume) is 200 cm3
T1 (temperature) is 60°C but convert into Kelvin
T2 (temperature) is 100 °C but convert into Kelvin
Plug in the values...
V2= (200 cm3)(60+273.15)/ (100+273.15)
V2=178.56 cm3
Answer:
178.56 cm3
Explanation: