3. Which of the following molecules would want except to have a nonpolar covalent bond
Answer:
polar bonds are caused by different kind of atoms, because almost every atoms have different powers to attract electrons.
the answer will be the two same atoms, F2
Which main type of sedimentary rock forms from solutions?
chemical
clastic
organic
shale
Answer:
The answer is a.
Explanation:
I took the quiz and took notes.
If your questions were the same as mine the answers would be below
Question 1: Which process moves small rock pieces during sedimentary rock formation?
Answer: erosion
------------------------------------
Question 2: Which statement describes one role of minerals during cementation?
Answer: Minerals bind sediments together.
------------------------------------
Question 3: Which correctly lists three factors that contribute to weathering of rock?
Answer: ice, water, wind
------------------------------------
Question 4: The picture shows a sedimentary rock that was formed from crystalized minerals. This is the picture in text form - Orangish red rock with coarse texture.
Actual question number 4: Which type of sedimentary rock is shown?
Answer: chemical
------------------------------------
Question 5: Which type of sedimentary rock forms from weathered sediment?
Answer: clastic
------------------------------------
Question 6: Which statement describes deposition?
Answer: Deposition happens after weathering and erosion.
------------------------------------
Question 7: Which correctly lists three agents that loosen and carry away rock during the erosion process?
Answer: plants, animals, wind
------------------------------------
Question 8: Which processes contribute to the formation of chemical sedimentary rocks?
Answer: Minerals dissolve and crystalize.
------------------------------------
Question 9: The image shows an example of a sedimentary rock. This is the picture in text form - Brown rock containing small pieces of different materials.
Actual question: Which feature of this rock demonstrates that it is a clastic sedimentary rock?
Answer: visible rock fragments
------------------------------------
Question 10: Which process squeezes layers of sediment together?
Answer: compaction
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Pictures used in question four and question nine are in the attached pictures.
God bless! :D
Please help will give brainliest _________________________________________________________________________________________________________________________________________
Answer:
What subject is this for?
Explanation:
Help plz!!!!!!!!!!!!!!!
Answer:
Albert Einstein proposed that a beam of light is not a wave propagating through space, but a collection of discrete wave packets—photons.
Explanation:
So the right answer is the first one.
The pair of elements with the most familiar chemical properties are
A. Mg and S
B. Ca and Br
C. Mg and Ca
D. S and Ar
Answer:
C. mg and Ca
Explanation:
These chemical elements are collectively called as the Alkaline Earth Metals. Calcium and Magnesium are two of the six elements that fall into this category. The outer electronic structure of all these elements is similar due to which they all have similarity in their chemical and physical properties. They are all shiny, though fairly soft but still harder than alkali metals. Further, these are usually white or silvery coloured elements.They react with water to form hydrogen gas and metal hydroxide and with oxygen, they form oxides.
Suppose a student needs to standardize a sodium thiosulfate, Na2S2O3,Na2S2O3, solution for a titration experiment. To do so, he or she will react it with a solution of iodine. The student adds a 1.00 mL1.00 mL aliquot of 0.0200 M KIO30.0200 M KIO3 solution to a flask, followed by 3 mL3 mL of distilled water, 0.2 g0.2 g of solid KI,KI, and 1 mL H2SO4.1 mL H2SO4. The student then titrates the solution with sodium thiosulfate solution in order to determine the exact concentration of Na2S2O3.Na2S2O3. The end point of the titration is reached after 0.90 mL0.90 mL of Na2S2O3Na2S2O3 is dispensed from a microburet. What is the concentration of the standard sodium thiosulfate solution?
Answer:
0.133
Explanation:
reaction between KIO3 and KI in acidic medium
IO3⁻ +5I⁻ +6h⁺ → 3I₂ + 3H₂O
I₂ reacts with thiosulphate
NaS₂O₃ → 2Na⁺ + S₂O₃²⁻
net reaction
IO⁻₃ + 6H⁺ + 6S₂O₃³⁻ → I⁻ + 3S₄O₆²⁻ + 3H₂O
mole of KIO₃
= molarity x volume
[tex]\frac{0.02mol}{L} *0.01L[/tex]
= 0.00002mol
a mole of KIO₃ has reaction with 6 mol of S₂O₃²⁻
= 2x6x10⁻⁵
= 0.00012 mol
volume = 0.90 ml
1 ml = 0.001L
0.90ML = 0.0009L
to get concentration,
molarity/volume
= 0.00012/0.0009
= 0.133m
The concentration of the standard sodium thiosulfate solution is ; 0.133
The net chemical reaction equation
IO₃⁻ + 6H⁺ + 6S₂O₃³⁻ ----> I⁻ + 3S₄O₆²⁻ + 3H₂O
First step : Determine the moles of KIO₃
number of moles = molarity * volume
= 0.02 mol / L * 0.01 L
= 0.00002 mol
From the net chemical reaction equation
one ( 1 ) mole of KIO₃ reacts with 6 moles of S₂O₃²⁻
∴ number of moles in the reaction = 6 * 0.00002 = 0.00012 mol.
Final step : Determine the concentration of sodium thiosulfate solution
Given Volume = 0.90 ml = 0.0009 L
∴ concentration of sodium thiosulfate solution
= 0.00012 / 0.0009 = 0.133
Hence we can conclude that The concentration of the standard sodium thiosulfate solution is ; 0.133
Learn more : https://brainly.com/question/15271672
1. How does thermal energy move between objects?
A. It moves from objects of lower mass to objects with higher mass
B. It moves from objects of higher mass to object with lower mass
C. It moves from objects of lower temperature to objects with higher temperature
D. It moves from objects of higher temperatures to objects with lower temperature
Answer:
D
Explanation:
Answer:
D
Explanation:
So. Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else.... When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.
How does the temperature of the core compare to the Sun?
The core is colder the surface of the Sun.
o The Sun is hotter than the core.
The core may be as hot as the surface of the Sun.
The core is hot during the day but cooler at nighttime.
Object A has a mass of 12g and a volume of 8cm3. object B has a mass of 20g and a volume of 8cm3 . which object has a greater density and by how much
Answer:
Object B has a density of 2.5 g/cm³ which is greater than object A by 1 g/cm³
Explanation:
Since we know that the formula for density is d=m/v, we can divide each mass by its corresponding volume to find the densities
12/8=1.5
20/8=2.5
So we know that object B has a greater density than object A by 1 g/cm³ (gram per cubic centimeter). Also the standard unit for density is kilograms per cubic meter but I used gram per cubic centimeter since they were the given units. 1cm=100m, 1000g=1km
The # of electrons in S2- -34 is
Answer:
The answer is 16
Explanation:
QUICKKKKK ill do 200+ points next question, how would you produce 1L of a .5 M KF solution, from a stock solution of 1 M KF
Answer:
We will take the 0.5 L from the 1M stock solution of KF inorder to form 0.5 M KF of 1L.
Explanation:
Given data:
Final volume = 1L
Final molarity = 0.5 M
Initial molarity = 1 M
Initial volume = ?
Solution:
Formula:
M₁V₁ = M₂V₂
1 M × V₁ = 0.5 M ×1L
V₁ = 0.5 M ×1L /1 M
V₁ = 0.5 L
We will take the 0.5 L from the 1M stock solution of KF inorder to form 0.5 M KF of 1L.
which material should you use so that the area is cool in terms of temperture O asphalt O red bricks O concrete O soil O
Answer:
red bricks
Explanation:
right on edg 2020
Red bricks should you use so that the area is cool in terms of temperture. Therefore, option B is correct.
What are red bricks used for?Red bricks can be used in the construction of structures such as buildings, foundations, arches, pavement, and bridges. These can also be used for aesthetic purposes such as landscaping, face work, and a variety of other architectural purposes.
Traditional red bricks are saw to be more robust, and structures constructed with them are stronger than hollow block structures.Red brick can be warm, with rust or terracotta undertones. They could also be cool and more burgundy.
Thus, Red bricks should you use so that the area is cool in terms of temperture, option B is correct.
To learn more about the red bricks, follow the link;
https://brainly.com/question/14893671
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I Need Help Please ?
Answer:
Not sure dude goodluck
Explanation:
Which statements about mixture is FALSE?
A. The ingredients ofvthe mixture keep their physical properties
B. Mixture components can be separated
C. All mixtures are food or drink only
D. A mixture contains more than one ingredients
What is the standard enthalpy of the reaction:
2 NO(g) + O2(g) → 2 NO2(g)?
Answer:
-116.2 kJ
Explanation:
In this reaction: Mg (s) + I₂ (s) → MgI₂ (s)
If 3.34 moles of Mg react with 3.56 moles of I₂, and 1.76 moles of MgI₂ form, what is the percent yield?
Answer:
52.7%
Explanation:
The balanced equation for the reaction is given below:
Mg (s) + I₂ (s) → MgI₂ (s)
From the balanced equation above,
1 mole of Mg reacted with 1 mole of I₂ to produce 1 mole of MgI₂.
Next, we shall determine the limiting reactant. This can be obtained as follow:
From the balanced equation above,
1 mole of Mg reacted with 1 mole of I₂.
Therefore, 3.34 moles of Mg will also react with 3.34 moles of I₂.
From the illustration made above, we can see that only 3.34 moles out of 3.56 moles of I₂ reacted completely with 3.34 moles of Mg.
Therefore, Mg is the limiting reactant and I₂ is the excess reactant.
Next, we shall determine the theoretical yield of MgI₂.
In this case, the limiting reactant will be use because it will produce the maximum yield of MgI₂ as all of it is consumed in the reaction.
The limiting reactant is Mg and the theoretical yield of MgI₂ can be obtained as follow:
From the balanced equation above,
1 mole of Mg reacted to produce 1 mole of MgI₂.
Therefore, 3.34 moles of Mg will also react to produce 3.34 moles of MgI₂.
Thus, the theoretical yield of MgI₂ is 3.34 moles.
Finally, we shall determine the percentage yield of MgI₂ as follow:
Actual yield of MgI₂ = 1.76 moles
Theoretical yield of MgI₂ = 3.34 moles.
Percentage yield of MgI₂ =.?
Percentage yield = Actual yield /Theoretical yield × 100
Percentage yield = 1.76/3.34 × 100
Percentage yield of MgI₂ = 52.7%
Which property do solutions with high pH values have?
gives off hydrogen gas when reacted with metal
turns litmus paper red
tastes sour
feels slippery
Answer:
I would say turns litmus paper red.
Explanation:
I finished the quiz, and got it right! Hope this helps!
PLEASE HELP I WILL GIVE U BRAINLIEST :)
This chart shows four atoms, labeled W, X, Y, and Z. These atoms can combine with each other to form molecules.
Which combination of atoms will form a molecule, but not a compound?
A. W and X
B. X and Y
C. W and Z
D. Y and Z
Answer:
W and Z
Explanation:
Atoms of the SAME element OR two atoms of DIFFERENT elements will form a MOLECULE.
E.g. 2 atoms of hydrogen + 1 atom of oxygen => 1 molecule of water. This 1 molecule of water can also be called a compound.
Also, 2 atoms of Oxygen can combine to form 1 molecule of Oxygen. This 1 molecule of Oxygen cannot be referred to as a compound.
Atoms of DIFFERENT elements form a COMPOUND.
Therefore, compounds are molecules, but molecules are not compounds.
Thus, the combination of atoms that will form a molecule, but not a compound is:
W(oxygen) + Z(oxygen) = molecule
Answer:
W and Z
Explanation:
2. (6 pts) In a reaction, 235 mL of 1.50 M HCl solution reacts completely with an excess amount of
aluminum. If the hydrogen gas is collected over water in a container with a volume of 3.60 L and at a
temperature of 25.0 °C, calculate the pressure in the container. The vapor pressure of water is 23.78
mmHg (Table 6.4, page 232).
2Al(s) + 6HCl(aq) + 3H2(g) + 2AlCl3(aq)
Answer:
[tex]P=1.23atm[/tex]
Explanation:
Hello.
In this case, since the total pressure in the container includes the pressures of both hydrogen and water:
[tex]P=P_{H_2}+P_{H_2O}[/tex]
For the reacting solution of HCl, based on the 6:3 mole ratio with hydrogen in the chemical reaction, we can next compute the yielded moles o hydrogen:
[tex]n_{H_2}=0.235L*1.50\frac{molHCl}{L}*\frac{3molH_2}{6molHCl} =0.176molH_2[/tex]
Then, by using the ideal gas equation we compute the pressure of hydrogen for the collected 3.60 L at 25.0 °C (298.15 K):
[tex]P_{H_2}=\frac{n_{H_2}RT}{V} =\frac{0.176mol*0.082\frac{atm*L}{mol*K}*298.15K}{3.60L}=1.20atm[/tex]
Finally, since the vapor pressure of water in at is 0.03129, the total pressure is then:
[tex]P=1.20atm+0.03129atm\\\\P=1.23atm[/tex]
Best regards!
Why do the leaves outside change colors?
Answer:
because the amount of pigments change as thee leaves prepare to fall from the trees
Question
The total kinetic energy of the tiny particles that make up matter
Carbonic acid, H2CO3, has two acidic hydrogens. A solution containing an unknown concentration of carbonic acid is titrated with potassium hydroxide. It requires 22.9 mL of 1.430 M KOH solution to titrate both acidic protons in 54.2 mL of the carbonic acid solution.
Required:
a. Write a balanced net ionic equation for the neutralization reaction. Include physical states.
b. Calculate the molarity of the carbonic acid solution.
Answer:
a. H₂CO₃(aq) + KOH(aq) ⇄ K₂CO₃(aq) + H₂O(l)
b. 0.603 M
Explanation:
Step 1: Write the neutralization reaction
H₂CO₃(aq) + KOH(aq) ⇄ K₂CO₃(aq) + H₂O(l)
Step 2: Calculate the reacting moles of KOH
22.9 mL of 1.430 M KOH react.
0.0229 L × (1.430 mol/L) = 0.0327 mol
Step 3: Calculate the reacting moles of H₂CO₃
The molar ratio of H₂CO₃ to KOH is 1:1. The reacting moles of H₂CO₃ are 1/1 × 0.0327 mol = 0.0327 mol.
Step 4: Calculate the molarity of H₂CO₃
0.0327 moles of H₂CO₃ are in a volume of 54.2 mL. The molarity of H₂CO₃ is:
M = 0.0327 mol/0.0542 L = 0.603 M
Please choose the best description, or definition for Principle of Fossil Correlation
Answer:
states that rock layers with the same unique groupings of fossils are of the same geologic age.
Explanation:
The principle of fossil correlation states that the presence of similar fossils of dead organisms in rock layers indicates that the organisms under investigation must have existed around the same geologic time. This principle can be used in dating the periods when the organism being studied lived.
The geological age system follows a chronological format in tracking the age of an item under study by grouping the time periods that organisms lived into strata.
In the presence of strong acids, which of the oxygen atoms on the carboxyl group is preferentially protonated and why?
a. Protonation occurs at the carbonyl oxygen because the resulting conjugate acid i stabilized by resonance.
b. Protonation occurs at the carbonyl oxygen because the resulting conjugate base is stabilized by the inductive effect.
c. Protonation occurs at the hydroxyl oxygen because the resulting conjugate acid is stabilized by resonance.
d. Protonation occurs at the hydroxyl oxygen because the resulting conjugate base is stabilized by the inductive effect.
Answer:
Protonation occurs at the carbonyl oxygen because the resulting conjugate acid is stabilized by resonance.
Explanation:
The carboxyl group is an organic and a functional group that consists of a carbon atom that's singly bonded to a hydroxyl group and double-bonded to an oxygen atom.
In the presence of strong acids, protonation occurs at the carbonyl oxygen because the resulting conjugate acid is stabilized by resonance.
Calculate the concentration of buffer components present in 210.00 mL of a buffer solution that contains 0.300 M NH4Cl and 0.300 M NH3 immediately after the addition of 1.00 mL of 6.00 M HNO3.
Answer:
[NH3] = 0.270M
[NH4Cl] = 0.327M
Explanation:
The HNO3 will react with the weak base, NH3, as follows:
HNO₃ + NH₃ → NH₄⁺ + NO₃⁻
Initial moles of each specie of the buffer:
NH3 = NH4⁺ 0.210L * (0.300mol/L) = 0.063moles
The moles added of HNO3 = Additional moles of NH4Cl and the moles substracted of NH3:
0.001L * (6mol / L) = 0.006 moles.
After the addition:
Moles NH3 = 0.063mol - 0.006mol = 0.057moles
Moles NH4Cl = 0.063mol + 0.006mol = 0.0069moles
And their concentrations are:
[NH3] = 0.057moles / 0.211L = 0.270M
[NH4Cl] = 0.069moles / 0.211L = 0.327M
The molar mass of bismuth (Bi) is 208.98 g/mol.
Calculate the mass in grams of a sample of Fli containing 7.35 x 1023 atoms.
Write your answer using three significant figures.
g Bi
Answer:
7.35 x 1023 atoms.
Explanation:
The mass in grams of a sample of Fli containing 7.35 × 10^23 atoms should be 255 grams.
Calculation of mass:Since The molar mass of bismuth (Bi) is 208.98 g/mol.
And, 1 mole Bi = 208.98 g/mol = 6.023×10^23 no of atoms
So, the mass in grams should be
= ( 208.98 g/mol ×7.35 × 10^23) ÷ (6.023×10^23)
= 255 grams.
Learn more about the mass here; https://brainly.com/question/20512522
The mercury level in a capillary tube placed in a dish of mercury is actually below the surface of the mercury in the dish. Please choose the answer that best explains the phenomenon.a. Mercury flows freely and is incapable of clinging to the walls of the capillary tube. b. Mercury has an incredibly high density for a liquid, making it too heavy to climb the capillary tube, c. The cohesive forces of mercury are much stronger than its adhesive forces. The adhesive forces may be repulsive, causing the mercury level in the tube to be lower than the mercury in the dish. d. Mercury is a polar molecule. It creates incredibly high cohesive forces, which prevent the mercury from climbing the capillary tube.
Answer:
The cohesive forces of mercury are much stronger than its adhesive forces.
Explanation:
Cohesive forces are forces that exist between the particles that compose a substance while adhesive forces refer to forces that exist between the particles of a substance and those of another substance.
The cohesive forces in mercury far outweigh the adhesive forces between the mercury drops and glass. Hence when mercury is put into a capillary tube, its meniscus is convex because cohesive forces tend to draw the liquid mercury into a drop.
Hence, the surface tension in mercury makes the mercury in the capillary tube to fall below the height of the mercury in the dish.
Subject is actually science please answer giving brainliest also!
Answer:
B. They are too small to be seen with only our eyes.
Explanation:
Why? Because if we could have the ability to see the particles that make-up an object, it may look weird. All particles (the types that make up matter) can not be seen with our eyes because they are too small.
Hope this helped!
Pls consider Brainliest-ing my answer! It would help and mean a lot! ; )
In an experiment, Lydia added 50 grams of sugar to 200 milliliters of water. She stirred the mixture, and the sugar eventually dissolved into the water and couldn’t be seen. The volume of the solution increased, but there was no noticeable change in color, odor, or temperature. Which statement best describes what happened in Lydia’s experiment? A. A physical change took place during this experiment. B. A chemical change took place during this experiment. C. A compound was formed during this experiment. D. A heterogeneous mixture was formed during this experiment.
Answer:
A. A physical change took place during this experiment
Explanation:
A physical change is one of the changes that occurs in a reaction. It is a kind of change characterized by no change to the chemical composition of the substances involved. It involves reactions such as melting, change of state, freezing, boiling etc.
According to this question, Lydia added 50 grams of sugar to 200 milliliters of water, then, stirred the mixture, until the sugar eventually dissolved into the water and couldn’t be seen. This change involved no change in color, odor, or temperature. Hence, Lydia's experiment represents a PHYSICAL CHANGE because only DISSOLUTION occured.
In an experiment, Lydia added 50 grams of sugar to 200 milliliters of water. She stirred the mixture, and the sugar eventually dissolved into the water and couldn’t be seen. The volume of the solution increased, but there was no noticeable change in color, odor, or temperature. Which statement best describes what happened in Lydia’s experiment? A. A physical change took place during this experiment. B. A chemical change took place during this experiment. C. A compound was formed during this experiment. D. A heterogeneous mixture was
Answer:
A
Explanation:
Jeremy left his bike outside overnight. When he woke up in the morning, there were water drops on the seat. When he went to ride his bike after lunch, he saw the water drops had disappeared. Which statement best describes what happened to the water? (2 points) a The energy from the sun caused the water drops to condense. b The energy from the sun caused the water on the seat to boil. c The energy from the sun cooled the water, causing it to evaporate. d The energy from the sun heated the water, causing it to evaporate.
Answer:
d The energy from the sun heated the water, causing it to evaporate.
Explanation:
The correct description of what happened is that the energy from the sun heated the water and causes it to evaporate completely.
Evaporation is a phase change process in which liquid is converted to gases. This occurs when a liquid gains considerable amount of energy. The molecules then breaks free from the bond holding compound place.
Option A is wrong because the energy from the sun does not cause condensation i.e. change from gas to liquid. The water on the seat does not boil, it simply evaporates. So, option B is wrong. When heat energy is added, it does not cause cooling of water. So option C is wrong.