Answer:
Ali is incorrect.
Explanation:
Ali is wrong because the climate is a study of the weather pattern over a long period of time. You cannot look outside one day and determine the climate because the climate is long-term.
She could say the weather is rainy, because that is short term, but not the climate.
plz hleeeeeeeeeep meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
WILL AWARD BRAINLIEST! I NEED HELP PLEASE! Match the states of matter for each of the five lines below.
Answer:
see explanations
Explanation:
The graphic is the heating curve for water. Note that it is divided into 5 distinct heat flow segments. The segments with changing slopes are single phase segments with changes in temperature values. From left to right segment A is solid ice being warmed to it's melting point. Segment B is the melting segment in which 2 phases are in contact (solid + liquid). Note that addition of heat does not change the temperature. Segment C is warming of the liquid (single phase) up to its boiling point. At the boiling point the liquid begins to pass into the gas phase and again 2 phases are in contact; i.e., liquid & gas. Note again when two phases are in contact no temperature change occurs. Finally, segment E is the heating of the pure, single phase gas.
In summary ...
Segment A => heating single phase (solid) ice up to melting pt.
Segment B => melting of ice => 2 phases in contact (s & l) ΔT = ∅.
Segment C => heating single phase (liquid) water up to boiling pt.
Segment D => boiling of liquid => 2 phases in contact (l & g). ΔT = ∅.
Segment E => heating single phase (steam) up to desired temperature.
For what it's worth, the equation for the segments that show increasing temperature values is q = mcΔT (m= mass, c = specific heat & ΔT temp change.
The segments with zero slopes (horizontal lines) are defined by equations q = m·ΔHₓ where m = mass & ΔHₓ = heat of fusion (a constant = 335 j/g). The same is true for the line at 100°C where q = m·ΔH(v) where m = mass & ΔH(v) is the heat of vaporization (a constant = 2259 j/g.
Calculations involve calculating the amount heat transfer for each segment individually and then adding the heat values to obtain the total heat transfer.
If you need more instruction on this topic, kick back a note and I'll try to help clarify. Good Luck, Doc :-)
Answer:
Picture attached has answers
Explanation:
How many grams are in 1.5 moles of oxygen (O2)?
Quinine in a 1.664-g antimalarial tablet was dissolved in sufficient 0.10 M to give 500 mL of solution. A 15.00-mL aliquot was then diluted to 100.0 mL with the acid. The fluorescence intensity for the diluted sample at 347.5 nm provided a reading of 327 on an arbitrary scale. A standard 100 ppm quinine solution registered 180 when measured under conditions identical to those for the diluted sample. Calculate the mass of quinine in milligrams in the tablet.
Answer:
605.6mg of quinine
Explanation:
Based on Lambert-Beer's law, the intensity of an optical measurement is directely proportional to its concentration.
Unknown concentration gives a reading of 327
100 ppm gives 180 of intensity
The concentration of the diluted quinine tablet is:
327 * (100ppm / 180) = 181.67 ppm. The final dilution
The concentration of the first diluted solution is:
181.67 ppm * (100.0mL / 15mL) = 1211ppm
ppm could be defined as mass of solute (In this case of quinine) in mg per liter of solution. That is:
1211mg / L
As the tablet was diluted to 500mL = 0.5L, the mass of the quinine is:
0.5L * (1211mg / L) =
605.6mg of quininewhat evidence Have you collected to explain The relationship between the seafloor Ready mid ocean ridges and ocean trenches
Answer:Abundant evidence supports the major contentions of the seafloor-spreading theory. First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.
Explanation:
4. How many atoms are in 1.73 moles of copper(I) oxide?
wish in new Explanation:
What is the temperature of the gas inside a 750 ml balloon filled with 0.30 g hydrogen gas? The pressure of the balloon is 1.2 atm.
How many moles are in 32.8 L of CO gas at STP?
At STP, 1 mole of any gas occupies 22.4 L of space. Since we are given STP conditions here, we can use this ratio to determine the number of moles of CO gas: (32.8 L CO)/(22.4 mol CO/L CO) = 1.51 mol CO.
So, there are 1.51 moles of CO gas.
Which product will precipitate in the following reaction:
CaCl2 + Na2CrO4 → CaCrO4 + 2 NaCl
A.NaCl
B.CaCrO4
C.Na2CrO4
D.CaCl2
Answer:
a
Explanation:
The vapor pressure of ethanol, CH3CH2OH, at 35.0 °C is 13.67 kPa. If 2.03 g of ethanol is enclosed in a 2.50 L container, how much liquid will be present?
Answer:
Hi how are you doing today Jasmine
How many liters of SO2 will be produced from 26.9L O2?
Answer:
8 litres of SO2 will produced from 26.9L o2
A correct statement of Henry's law is: a. The concentration of a gas in solution is inversely proportional to temperature. b. The concentration of a gas in solution is directly proportional to the mole fraction of solvent. c. The concentration of a gas in solution is independent of pressure. d. The concentration of a gas in a solution is inversely proportional to pressure. e. None of these.
Answer:
e. None of these.
Explanation:
Hey there!
In this case, since the Henry's law is defined in terms of pressure, henry's constant and pressure, as shown below:
[tex]C=K_H*P[/tex]
Whereas C is the concentration, KH the Henry's constant and P the pressure, we infer that the concentration of a gas solution is directly proportional to the pressure, which is not the group choices, therefore, the answer is e. None of these.
Best regards!
What volume would 75.0g of oxygen gas occupy
Answer:
Explanation: It is already known that 1 mole of the gas( or 32g of O2) is equivalent to 22.4 Litres of the oxygen gas. So, 8g is equivalent to = (22.4/32) × 8 = 5.6 L of the gas.
What is the final volume of a 3.5M NaOH solution if the original solution was 20mL of a 7.00M NaOH solution
Answer:
0.04 L (or 40 mL)
Explanation:
The dilution equation is: [tex]M_{s} V_{s} = M_{d} V_{d}[/tex]
[tex]M_{s}[/tex] = the molarity of the sock solution
[tex]V_{s}[/tex] = the volume of the sock solution
[tex]M_{d}[/tex] = the molarity of the diluted solution
[tex]V_{d}[/tex] = the volume of the diluted solution
We are given the original, or stock, solution, which is [tex]M_{s} = 7.00 M NaOH[/tex], and [tex]V_{s} = 0.02 L (20 mL)[/tex]. We are also given the final molarity, which is: [tex]M_{d} = 3.5 M NaOH[/tex].
So, plugging our given into the dilution equation, results in:
[tex]7.00 M * 0.02 L = 3.5M * V_{d}[/tex] (divide both sides by 3.5 M, in order to get [tex]V_{d}[/tex] by itself).
[tex]\frac{7.00 M * 0.02 L}{3.5M} = V_{d}[/tex]
[tex]V_{d} = 0.04 L (or 40 mL)[/tex]
So, the final volume of a 3.5 M NaOH solution, with an original solution of 20 mL of a 7.00 M NaOH solution, is 0.04 L (or 40 mL)
Hopefully this helped. Good luck!
A 0.530 M Ca(OH)2 solution was prepared by dissolving 36.0 grams of Ca(OH)2 in enough water. What is the total volume of the solution thus formed? (4 points)
Answer:
0.917 L
Explanation:
Step 1: Given data
Molar concentration of the solution (M): 0.530 M (0.530 mol/L)Mass of Ca(OH)₂ (solute): 36.0 gStep 2: Calculate the moles corresponding to 36.0 g of Ca(OH)₂
The molar mass of Ca(OH)₂ is 74.09 g/mol.
36.0 g × 1 mol/74.09 g = 0.486 mol
Step 3: Calculate the volume of the solution
Molarity is equal to the moles of solute divided by the liters of solution.
M = moles of solute / liters of solution
liters of solution = moles of solute / M
liters of solution = 0.486 mol / (0.530 mol/L) = 0.917 L
Answer:
0.917 liters
Hope this helps! :D
Explanation:
5.
(08.02 MC)
A 0.530 M Ca(OH)2 solution was prepared by dissolving 36.0 grams of Ca(OH)2 in enough water. What is the total volume of the solution thus formed? (4 points)
What is temperature?
Answer: Temperature is an objective measurement of how hot or cold an object is. It can be measured with a thermometer or a calorimeter. It is a means of determining the internal energy contained within a given system.
Explanation:
Answer:
Temperature is a physical quantity that expresses hot and cold
Explanation:
Temperature is a physical quantity that expresses hot and cold. This is how the air feels and how hot/cold something is. The less tight the atoms are, the hotter something is. The more tight the atoms are, the cooler something is.
Water pollution has severely impacted animals and plants in New York's Hudson
Calculate the number of total atoms in 195 grams of Ni(OH)2.
1.267 x 10 ^ 24 is the total number of atoms
After balancing this equation, how many oxygen atoms are present on the product side of the following equation:
C3H8 + 02 --> CO2 + H20
A.10
B.42
C.2
D.3
Answer:
B
Explanation:
Many diseases can be prevented with a proper diet, exercise, and abstinence from smoking, alcohol, drugs, and sexual activity. True or False( Explain)
Answer:
TrueExplanation:
This is due to multiple reasons. First of which, proper diet with a variety of selection of foods from vegetables, to dairy and meats can provide the body with essential nutrients used to fight off diseases and germs and improve the immune system. Exercise can also help boost the immune system and prevent diseases as well. It can also improve the condition of the heart which prevents heart disease and help the brain (prevent strokes). Drugs, smoking, alcohol and unsafe sexual activity can lead to a multitude of diseases, such as lung cancer, drug addictions, cardiac arrest, blood clots, HIV and other STDs, liver failure, etc. So it would be wise to abstain from those activities.
A compound with an approximate molar mass of
65.0g/mol is made up of C, H and Cl. This same
Compound contains 55% of Cl by mass .lf 9g
of the compound contains 4.19 x 10²³ atoms,
determine the compound's:
a empirical formular and molecular formular
Reacting Solutions of Aluminum Chloride with Potassium Hydroxide
Mixing the solutions of aluminum chloride and potassium hydroxide results in the following.
AlCl3(aq) + KOH(aq) --> KCl (aq) + Al(OH)3(s)
150 mL of a 1.50M aluminum chloride solution is mixed with 155 mL of a 2.50M potassium hydroxide solution and heated.
QUESTIONS:
1. Balance the equation: __AlCl3 + __KOH --> __KCl + __Al(OH)3
Write coefficients in order space between each number or a comma and a space for exam 1 2 3 4 or 1, 2, 3, 4
2. How many moles of aluminum chloride is needed to completely react with the given amount of potassium hydroxide?
A. 10.0 mol AlCl3
B. 0.225 mol AlCl3
C. 0.388 mol AlCl3
D. 0.129 mol AlCl3
3. How much aluminum hydroxide is made from this reaction? (reminder to leave space between number and unit)
1Al2(SO4)3 + 3ZnCl2 → 2AlCl3 + 3ZnSO4
The coefficients represents moles. There is 1 mole of Aluminum Sulfate, 3 moles of Zinc(II) Chloride, 2 moles of Aluminum Chloride, and 3 moles of Zinc(II) Sulfate.
Now add all the coefficients/moles.
9 is the sum of all the coefficients.
What is the minimum temperature
needed to dissolve 35 grams of KCl in 100 grams of water?
Answer:
[tex]30^{\circ}\text{C}[/tex]
Explanation:
To know the temperature at which KCl dissolves in water we need to refer to the general solubility curves.
In the case of [tex]KCl[/tex], [tex]35\ \text{g}[/tex] of it will dissolve in [tex]100\ \text{g}[/tex] of water at a minimum temperature of [tex]30^{\circ}\text{C}[/tex].
So, the the minimum temperature needed to dissolve 35 grams of KCl in 100 grams of water is [tex]30^{\circ}\text{C}[/tex].
5. What physical property of foam makes it a good choice to
use in life vests?
A. Foam has a relative density less than water.
B. Foam is a good thermal insulator.
C Foam is non-magnetic.
D. Foam is soluble in water.
A 0.43g samle of KHP required 24.11cm of NaOH for neutralization. Calculate the molarity of NaOH
Answer:
0.083 M
Explanation:
We'll begin by calculating the number of mole in 0.43 g of KHP (potassium hydrogen phthalate, C₈H₅O₄K). This is can be obtained as follow:
Mass of C₈H₅O₄K = 0.43 g
Molar mass of C₈H₅O₄K = (8×12) + (5×1) + (16× 4) + 39
= 96 + 5 + 64 + 39 = 204 g/mol
Mole of C₈H₅O₄K =?
Mole = mass / molar mass
Mole of C₈H₅O₄K = 0.43 / 204
Mole of C₈H₅O₄K = 0.002 mole
Next, we shall determine the number of mole of NaOH required to react with 0.43 g (i.e 0.002 mole) of KHP. This can be obtained as follow:
C₈H₅O₄K + NaOH → C₈H₄O₄KNa + H₂O
From the balanced equation above,
1 mole of KHP reacted with 1 mole of NaOH.
Therefore, 0.002 mole of KHP will also react with 0.002 mole of NaOH.
Next, we shall convert 24.11 cm³ to L. This can be obtained as follow:
1000 cm³ = 1 L
Therefore,
24.11 cm³ = 24.11 cm³ × 1 L / 1000 cm³
24.11 cm³ = 0.02411 L
Finally, we shall determine the molarity of NaOH. This can be obtained as follow:
Mole of NaOH = 0.00 2 mole
Volume = 0.02411 L
Molarity of NaOH =?
Molarity = mole /Volume
Molarity of NaOH = 0.002 / 0.02411
Molarity of NaOH = 0.083 M
Which resources are unevenly distributed throughout Earth?
Select all that apply.
oil
soil
iron
oxygen
Answer:
Some natural resources like sunlight and wind are found everywhere, but other natural resources are unevenly distributed. Resources like oil, coal, and natural gas are only found where conditions were favorable to grow and preserve large quantities of animal or plant matter.
Explanation:
4. Charles' law describes the relationship between which two quantities?
A.pressure and volume
B.miles and pressure
C. Volume and temperature
D.temperature and moles
Answer:
C i think im so sorry if is wrong
Charles' law describes the relationship between volume and temperature.
What is charles law?
Charles's law, a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature.
Charles's law, a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant
Hence,option C is correct.
Learn more about charles law here:
https://brainly.com/question/16927784
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a 55g block of metal has a specific heat of 0.45 J/g°C. What will be the temperature change of this metal if 450 J of heat energy are added
Answer:
18.18C
Explanation: Write whats below to show your work :D
m=55
C=0.45
Q=450zj
ch.temp=?
Q=mct
450 = (55)(.45)T
450 = 24.75
/24.75 = /24.75 (cancels out)
18.18 is the answer
Hope this helps! did it with my teacher.
What is the energy of an electron in a Li+ ion when an electron moves from n = 2 to n =3?
Which compound contains a bond with the least ionic character? A. CO B. CaO C. K2O D. Li2O
Answer:
A. CO
Explanation:
This is the answer I believe based on that it has the least amount of elements leading me to think that it would have the least ionic character.
The compound that contains a bond with the least ionic character is CO.
Ionic bonding involves transfer of valency electrons. Usually from a metal to a non metal.
The ionic character or nature of a bond is determined by the relative
electronegativity of the atoms involved.
So, the bigger the difference between the electronegativity of two atoms, the more likely it is to be ionic.
This simply implies that if the electronegativity differences of the atoms
involved are smaller, the ionic character will be small.
Therefore, the compound that contain a bond with the least ionic character is CO.
The difference in negativity of the carbon and oxygen atoms are small, this is
why the compound CO among the options possess the least ionic character.
learn more: https://brainly.com/question/19523724?referrer=searchResults