What did Celsius discover that made the Fahrenheit scale not precise enough?
Disadvantages of using cisplatin as an anti-cancer drug
Answer: The following side effects are common (occurring in greater than 30%) for patients taking Cisplatin:
Nausea and vomiting. Nausea may last up to 1 week after therapy.
Low blood counts.
Kidney toxicity.
Ototoxicity hearing loss, ringing in the ears.
Blood test abnormalities (low magnesium, low calcium, low potassium)
Explanation:
My mind is ok :')
Please help answer this Guy's HELP it's very Important
Answer:
Explanation:
1. HCl helps breakdown,absorb and digest food and also destroy bacterias in the stomach.
2. Organic Matter promotes good soil structure and act as reservoir of nutrients in the soil.
3. The nature of the solution is Basic
Reason... Blue litmus will remain blue in a basic solution and turn Red in an acidic solution
4. There's a number of test available for her to use but preferably... She should use the Litmus paper test. That's easier. An acidic solution will Turn a blue litmus red while the blue litmus will retain its blue color in a basic solution.
PLEASE HELP REAL ANSWER NO FILE. Part A
Electricity generated from any source comes with its own advantages and
disadvantages. So, no source of energy for generating electricity is perfect. However,
imagine that there is an energy source that perfectly meets the needs of society.
Describe this ideal source of energy. Include relevant factors such as cost, supply, safety,
reliability, and environmental impact
Answer:
Wind energy
Explanation:
An ideal source of energy needs to be reliable, cost effective, safe and must lead to almost zero adverse environmental impact.
Wind energy is energy obtained from air moving at high velocity. This energy is harvested using windmills which convert mechanical energy to electrical energy.
Wind is inexpensive because it occurs naturally. However, a large expanse of land is required in order to mount sufficient number of windmills that will generate enough electrical energy for practical purposes.
This method of electricity generation is safe and does not lead to any environmental hazard unlike the burning of fossil fuels, use of nuclear energy or loss of habitat due to hydroelectric power generation.
please help- science
1. - new
2. full
3. first quarter
4. last quarter
Answer:
2. Full
Explanation:
A lunar eclipse occurs at a full moon when Earth is directly between the moon and the sun. During a lunar eclipse, Earth blocks sunlight from reaching the moon.
Hope this helps!!
How many moles of lithium Sophie are in a simple with the number of atoms shown below?
2.94 x 10^23
a 0.0698
b 0.244
c 0.488
d 0.944
How many milliliters of 0.010 M NaOH are required to exactly neutralize
20.0 milliliters of 0.020 M HCI?
30 mL
10 mL
40mL
20mL
Answer:20
Explanation:
Which is true regarding pressure?
A.) at high pressure, the molecules are moving slower and therefore hitting other particles and the sides of a container less frequently
B.) pressure is calculated by combining the amount of space an entire object takes up.
C.) pressure is calculated by averaging the kinetic energy of all particles in a container
D.) at higher pressure indicates that particles are colliding with the walls of a container more frequently
Answer:
D
Explanation:
The higher a pressure in a system the faster the molecules within it move and collide with one another due to lack of space
List 3 natural resources (non-living) found in the “glorious place”
Answer:
уфукингнегроитукиурепоинты
Explanation:
What happens to iron when it melts?
O A. It undergoes a chemical change.
O B. It undergoes a physical change.
O c. Its atoms break apart and form new atoms.
O D. Its atoms combine and form new atoms.
Answer:
B. It undergoes a physical change.
Explanation:
Hello there!
In this case, since we know that chemical changes lead to the formation of new atoms and/or compounds due to the bonds rearrangement of the initial substances and the physical changes occur without changing the composition of the initial substances, we can infer that, since melting is a process that changes the phase of matter from solid to liquid without changing the identity of the initial substance, the answer to this question would be B. It undergoes a physical change. because the other options describe chemical changes.
Best regards!
Answer:
B. It undergoes a physical change.
Explanation:
At room temperature, the iron atoms are in an unusual loosely packed open arrangement; as iron is heated past 912 degrees Celsius, the atoms become more closely packed before loosening again at 1,394 degrees Celsius and ultimately melting at 1,538 degrees Celsius.
In a multicellular organism, the reproduction of cells is carefully controlled most of the time. Old colls are replaced with new cells and the growth rate is regulated so they do not reproduce foo rapidly or too slowly. Which general process does this regulation
represent?
o performing respiration
maintaining homeostasis
o completing transportation
o carrying out photosynthesis
Answer: i think it’s maintaining homeostasis
Explanation: idrk it’s my best guess, i’m taking the test rn and that’s what i’m gonna put. i have an A in this class lol so ♀️
Answer:
maintaining homeostasis
Explanation:
I got it on my test and I got it right.
Alkenes provide many ways for incorporating oxygen atoms at specific locations in our molecule.
a. True
b. False
Answer:
True
Explanation:
Answer:
True
hope it is helpful to you
When heated, allyl aryl ethers and allyl vinyl ethers undergo a reaction called a Claisen rearrangement, a concerted reorganization of bonding electrons similar to the Diels-Alder reaction. The reaction proceeds through a six-membered, cyclic transition state. Draw the structure of the expected product when this compound undergoes a Claisen rearrangement.
Answer:
See explanation below
Explanation:
I found a picture of this exercise, to show you how to do this problem.
The first picture is the compound, and the second is the mechanism of reaction to do this claisen rearrangement.
Hope this helps
Which statements describe the types of energy emitted by the Sun? Check all that apply.
A. It emits most of its energy in gamma rays.
B. It emits all wavelengths in the electromagnetic spectrum.
C. It emits most of its energy as visible light.
D. Its peak wavelength is in the orange-yellow range.
E. It emits no X-rays or radio waves.
F. Its peak wavelength is in the yellow-green range.
Answer:
a,c,b
Explanation:
Which of these events would occur last in a food chain?
A. Plants making food from sunlight.
B. A hyena eating a dead animal.
C. Gazelles eating grass.
D. An animal decaying after it dies.
What happens when an ice cube melts in a glass of water?
Answer:
the water is warmer in temperature than the ice cube
Explanation:
the cube wouldn't melt if the water was colder or equally cold (eventually the water would equalize to the room temp) but for a while the water would have to be colder than the cube for the ice cube to stay in a solidified form
binu nila ang hagdan hagdang palayan sa mount province
Answer:
The Banaue Rice Terraces (Filipino: Hagdan-hagdang Palayan ng Banawe) are terraces that were carved into the mountains of Banaue, Ifugao, in the Philippines, by the ancestors of the indigenous people.
Explanation:
シ︎
The electrolyte magnesium chloride (MgCl2) will break up into how many individual particles in water (what is the i value)?
Answer:
Solid magnesium chloride is a non-conductor of electricity because the ions aren't free to move. However, it undergoes electrolysis when the ions become free on melting. Magnesium chloride dissolves in water to give a faintly acidic solution (pH = or 6).
where does baby came from
Answer:
they came from for the dad sperm
What volume of 0.1700 M NaOH is required to titrate 24.00 mL of 0.1050 M HCI?
Answer:
Without rounding significant figures, V = 14.824 mL
With rounding significant figures, V = 10 mL
Explanation:
a firework company is coming out with a new type of firework for the 4th of july. the firework gives off 1 color of light with energy of 4.18 x 10-19 j. a) calculate the wavelength of the color.
HELPPPPPP
Answer: I don't have the answer I'm just doing this for the points i hope you get your answer though
Explanation:
miscible liquids that have different boiling points can be separated by
Answer:
Distillation.
Explanation:
Hello there!
In this case, by considering the attached file, which depicts the process of distillation, whereby miscible liquids are separated out by firstly boiling and consequently condensing the liquid with the lowest boiling point so that the liquid with the highest boiling point remains in the flask. This process is widely used in the oil gas industry as lots of heavy (high boiling points) and light (low boiling points) produces can be obtained via distillation.
Regards!
33. Convert the following word equations into balanced formula
equations
a. Potassium chloride Potassium chloride + Oxygen
b.Zinc + Sulphuric acid --Zinc sulphate + Hydrogen
c. Calcium carbonate calcium oxide + carbon dioxide
34. Derive Fama where all symbols have their usual meaning.
Answer:
a. KClO₃ ⇒ KCl + 1.5 O₂
b. Zn + H₂SO₄ ⇒ ZnSO₄ + H₂
c. CaCO₃ ⇒ CaO + CO₂
Explanation:
We will convert the following word equations into formula equations and then balance them using the trial and error method.
a. Potassium chlorate (I fixed a mistake here) ⇒ Potassium chloride + Oxygen
KClO₃ ⇒ KCl + O₂
We can balance this equation by multiplying O₂ by 1.5.
KClO₃ ⇒ KCl + 1.5 O₂
b. Zinc + Sulphuric acid ⇒ Zinc sulphate + Hydrogen
Zn + H₂SO₄ ⇒ ZnSO₄ + H₂
This equation is already balanced.
c. Calcium carbonate ⇒ calcium oxide + carbon dioxide
CaCO₃ ⇒ CaO + CO₂
This equation is already balanced.
Boiling point elevation means that:
A. it will take more energy for the particles of the solution to overcome the vapor pressure.
B. it will take more energy for the particles of the solution to overcome the atmospheric pressure.
C. the boiling point is lower because of the solute particles that are removed from the solution.
D. the boiling point is higher because of the solute particles that are removed from the solution.
Answer:
B. it will take more energy for the particles of the solution to overcome the atmospheric pressure.
Explanation:
i checked the slideshow from educere lol (slide 8 colligative properties lesson)
Boiling point elevation means it will take more energy for the particles of the solution to overcome the atmospheric pressure. Hence, option B is correct.
What is boiling point elevation?The temperature at which a liquid's vapor pressure equals that of the atmosphere is known as the boiling point. A nonvolatile solute solution has a boiling point that is greater than the pure solvent.
Pure water has a boiling point of 100 degrees Celsius, but eating a solute like salt can raise the boiling point. Only the solute's mole fraction determines the boiling point elevation. The molarity of the solution directly relates to the change in boiling point.
With an increase in external pressure, the boiling point rises. High boiling points are the property of liquids with stronger intermolecular forces.
Elevated boiling points indicate that more energy will be required for solution particles to overcome air pressure. As a result, choice B is accurate.
Learn more about Boiling point elevation. Here:
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Help solve the types of chemical reactions
[tex]1) \: decomposition[/tex]
[tex]2) \:hydrocarbon \: combustion[/tex]
[tex]3) \: formation[/tex]
[tex]4) \: double - replacement[/tex]
[tex]5 \: double - replacement[/tex]
[tex]6) \: formation[/tex]
[tex]7)double \: - replacement[/tex]
[tex]8) \: double - replacement[/tex]
If the experiment were repeated using a cuvettes with a path length of 2.0 cm, how would that affect the absorbance values for the Co2 solutions (if at all), assuming all of the concentrations remained unchanged?
Answer:
..............................
What is the volume of the gas if there are 3.20 mol of gas at 265 K and 2.50 atm of pressure?
Answer:
27.81 L
Explanation:
Assuming the gas is ideal, we can solve this problem by using the following formula:
PV = nRTWhere:
P is Pressure, 2.50 atmV is Volumen is the number of moles, 3.20 molR is a constant, 0.082 atm·L·mol⁻¹·K⁻¹T is temperature, 265 KWe input the data:
2.50 atm * V = 3.20 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 265 KAnd solve for V:
V = 27.81 LAnswer the following questions related to H2O.
Substance ΔG°f at 298K(kJ/mol)
H2O(l) −237.2
H2O(g) −228.4
(a) Using the information in the table above, determine the value of ΔG° at 298K for the process represented by the equation H2O(l)⇄H2O(g).
Question 2
(b) Considering your answer to part (a), indicate whether the process is thermodynamically favorable at 298K. Justify your answer.
Question 3
(c) Considering your answer to part (b), explain why H2O(l) has a measurable equilibrium vapor pressure at 298K.
Question 4
Water vapor can be produced in two different processes, as represented below.
Process 1 Process 2
H2O(s)⇄H2O(g) H2O(l)⇄H2O(g)
(d) In terms of concepts of entropy and the particle-level structure of the different phases of water, explain why the change in entropy, ΔS, is greater for process 1 than for process 2.
Answer:
1. 8.8kJ/mol
2. The process is not favorable.
3. The reason is in the answer.
4. Process 1.
Explanation:
1. ΔG° = ΔG° products - ΔG° reactants
ΔG° = -228.4kJ/mol - (-237.2kJ/mol) = 8.8kJ/mol
2. The process is not favorable because ΔG > 0
3. As the reaction is an equilibrium, a little amount of water will change from liquid to gas. This is the reason because of water has a measurable equilibrium vapor pressure.
4. Entropy is greater in process 1 because the structure of H2O(s) is more organized than H2O(l) (S of H2O(s) is lower than H2O(l)).
ΔS of H2O(s)⇄H2O(g) is greater than H2O(l)⇄H2O(g)
Given reaction is not thermodynamically favorable as value of ΔG is positive, water has measurable equilibrium vapor pressure because very little amount of water changes and entropy of 1st process is more due to solid structure of water.
What is Gibb's free energy?
Gibb's free energy of any reaction tells about the amount of free energy available to complete the reaction.
(1). Given chemical reaction is:
H₂O(l) ⇄ H₂O(g), in this reaction water changes its state from liquid to gas. Also given the value of standard free energy:
ΔG° for H₂O (l) = -237.2 kJ/mole
ΔG° for H₂O (g) = -228.4 kJ/mole
ΔG° = ΔG°(product) - ΔG°(reactant)
ΔG° = -228.4kJ/mol - (-237.2kJ/mol) = 8.8kJ/mol
(2). As the calculated value of ΔG° is positive, so the reaction is not thermodynamically favorable, for the spontaneous process value of ΔG° should be negative.
(3). Water has a measurable equilibrium vapor pressure because very little amount of water will change from liquid to gas state in the equilibrium.
(4). Change in entropy of the reaction can be calculated as:
ΔS = ΔS(product) - ΔS(reactant)
In the first process reactant is in solid state which have value near to zero, so we get the higher value of ΔS for 1st process as compare to 2nd.
Hence, answers are: (1). ΔG° = 8.8kJ/mol, (2). not thermodynamically favorable, (3). because very little water changes and (4). due to solid structure of water.
To know more about Gibb's free energy, visit the below link:
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Given the reaction: N2(g) +2O2(g) ⇌ 2NO2(g) The forward reaction is endothermic. Determine which of the following changes would result in more product being produced.
I. Increase NO2
II. Decrease O2
III. Add a catalyst
IV. Increase the temperature
V. Increase the pressure
A. I and II
B. II, III, and V
C. IV and V
D. II and IV
Answer:
C
Explanation:
increasing the temperature will favour the forward reaction therefore the reaction system will try to counteract that by producing more heat and NO2 therefore increases the amount of products produced
increasing the pressure will favour the forward reaction as it has more moles of substance therefore if the forward reaction is favored, more product will be produced
Answer:
C.) lV and V
Explanation:
I got it correct on founders edtell
What locations are likely to be affected by an earthquake or tsunami?
San Francisco, California, USA
San Francisco, Tokyo, and Asunción
Tokyo, Japan
None of the locations
Asunción, Paraguay, South America
Answer:
All the locations can suffer earthquakes and a handful like tokyo tsunami so the question is either or so the anwer would be all
Explanation: