Answers
Answer:
B) Two tectonic plates pullaway from each other, forming a rift valley or midocean ridge.
Hope this helps u! ;)
-Ari.
Related Questions
Will mark as Brainliest.
Two hundred grams of a substance requires 0.52 kJ of heat to raise its temperature from 25°C to 45°C. Use the table to identify the substance. q = mC▲T. Mass (m) is in grams. Temperature is in degrees Celsius.
Substance: Specific Heat (C) in joules per gram/degrees centigrade:
Water (ice) 2.05
Iron 0.46
Aluminium 0.90
Gold 0.13
Copper 0.39
Ammonia (liquid) 4.70
Ethanol 2.44
Gasoline 2.22
Water (liquid) 4.18
Water (vapor) 2.08
Air (25 degrees Celsius) 1.01
Oxygen 0.92
Hydrogen 14.30
Question options:
water
gasoline
ammonia
gold
Answers
The substance is Gold
To know that we clear the equation q=m*C*Δt for the specific heat (C) and solve the equation. Keep in mind that we need to use the heat (0,52 kJ) in Joules since the values from the table are given in Joules. So 0,52 kJ=520 J
[tex] \frac{q}{m*\Delta T}= C= \frac{520 J}{200 g *(45 degC-25degC)}= 0,13 J/gdegC[/tex]
Looking at the table, the substance that has this specific heat is Gold.
Have a nice day!
Answer:gold
Explanation:
Why is it not a good idea to use a stopper when combining two unknown substances in test?
Answers
You would not want to use a stopper when combining two unknown substances because the gasses made from the combination could end up creating to much pressure and explode.
Planetesimal definition
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adjective1.relating to planetesimal bodies.
The temperature of an object is directly related to A. the volume of the object. B. the motion of its particles. C. the potential energy of its chemical bonds. D. the mass of the object.
Answers
Answer: Option (B) is the correct answer.
Explanation:
In a solid object, molecules are closely packed together due to strong intermolecular forces between them. So, when heat is provided to the object then forces between the atoms decreases and as a result, atoms start to move from their initial place.
Hence, atoms gain kinetic energy due to increase in their motion.
For example, when ice is heated it changes into liquid state of water.
Also, K.E = [tex]\frac{3}{2}kT[/tex]
where k = Boltzmann constant
T = temperature
Hence, kinetic energy is directly proportional to temperature.
Thus, we can conclude that the temperature of an object is directly related to the motion of its particles.
You notice that heat is released during a chemical reaction. This reaction is a(n) _______ reaction.
Answers
PLEASE HELP ME!?!?! What technology did scientists use in the mid-1900s to map the mid-ocean ridge
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Which statement describes the valence electrons in metallic bonds?
Answers
Answer:
They are shared among many atoms.
Explanation:
In metallic bonds, the valence electrons of interacting metal atoms from s and p orbitals are delocalized. Therefore, instead of revolving their respective metal atoms they form a sea of electrons.
Therefore, the positively charged atomic nuclei of the interacting metal ions gets surrounded by this sea of electrons.
Hence, we can conclude that the valence electrons in metallic bonds are shared among many atoms.
Final answer:
Valence electrons in metallic bonds are delocalized, allowing them to move freely and contribute to properties like conductivity and malleability. The metallic bond consists of the attraction between cations and a 'sea of electrons,' resulting in varying strengths and melting points for different metals.
Explanation:
The valence electrons in metallic bonds are delocalized, which means that they do not belong to any one atom but are free to move about the entire metal structure. The metallic bond is characterized by an electrostatic attraction between the positively charged nuclei, known as cations, and these free-moving, or delocalized, valence electrons. This forms a 'sea of electrons' that is responsible for many properties of metals such as conductivity, malleability, and ductility.
In solid metals, these valence electrons can move relatively easily throughout the crystalline lattice, forming an attraction with positive ions. The strength of these bonds varies, but typically metallic bonds are weaker than ionic or covalent bonds, with dissociation energies ranging from 1 to 3 eV. Some metals have very high melting points and are hard, while others are softer and have lower melting points, primarily depending on the number of delocalized electrons.
What are ways that we can respond to eliminate an invasive species? Choose all that apply.
biological control by using other living organisms to rid of invasive species
chemical control by use of chemicals
sun control
physical control by physically removing the speicies
Answers
D.physical control by physically removing the species
A. biological control by using other living organisms to rid of invasive species
Taken the quiz, and got them all correctly answered!
Have a good day.
The ways by which we can respond to eliminate an invasive species can be of a biological control, or by any physical hindrance or chemical control.
What are invasive species?The organisms which are migrating to an area which is not its habitat but becoming threat to the organisms which are inhabitants there. These kind of organisms might destroy other small organisms or their resources of shelter and food.
The invasive species can be controlled by physical means such as putting some barriers or making some cages or related strategies to trap them. Other ways is that allotting other living organisms to get rid of the invasive species.
We can use some chemical controls as well, where the chemical used must be non-toxic and cause no more threat to nature. Therefore, except sun control, all other methods can be used.
Find more on invasive species:
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How many atoms are in 5.03 moles of silicon dioxide
Answers
How I got the answer:
There are 6.02x10 to the power of 23.. atom/particles in one mole.
By using cross-multiplying, I multiplied 6.02x10 to the power of 23 with the 5.03 moles to get the answer of 3.02x10 to the power of 24.
Why do submarines have to be built with such strong, thick walls, compared to ships? Explain in as much detail as you can using ideas about water pressure.
Answers
What has cells that are dried out?
Answers
1.the water on the surface of the earth
2. a solution that will conduct an electric current
3. process used by plants to make simple sugars and starches
4. process used to produce fresh water from saline
photosynthesis
desalination
hydropshere
electrolyte
WILL give BRAINLIEST!!!!!!!!!!!
HELP ASAP!!!!!!!!!!!!!!!!!!!!
Answers
hope this helped!
The force that slows down and eventually stops a ball you roll across the pavement is called A) kinetic force. B) friction force. C) the slow force. D) potential force.
Answers
The ball stops moving because of friction force. Friction is the force that opposes all motion. Therefore, the answer is friction force...
Answer:
friction
Explanation:
took test
A molecule contains 24.36g of N and 62.64 g of Ag. What is its empirical formula
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m(N) = 24,36 g.
n(N) = m(N) ÷ M(N).
n(N) = 24,36 g ÷ 14 g/mol.
n(N) = 1,74 mol.
m(Ag) = 62,64 g.
n(Ag) = m(Ag) ÷ M(Ag).
n(Ag) = 62,64 g ÷ 107,87 g/mol.
n(Ag) = 0,58 mol.
n(N) . n(Ag) = 1,74 mol : 0,58 mol /÷0,58.
n(N) . n(Ag) = 3 : 1.
Answer:
AgN3
Explanation:
What was the hiker's average velocity during part B of the hike? In Part A, a hiker travels four kilometers east from nine to nine-forty-five a.m. In Part B, a hiker travels six kilometers south from nine-forty-five to ten-forty-five a.m. In Part C, a hiker travels four kilometers west from ten-forty-five to eleven-fifteen a.m. In Part D, a hiker travels six kilometers north from eleven-fifteen a.m. to twelve p.m.
Answers
You have this in Chemistry. It should be in physics, but never mind that.
A
d = 4 km due east. See note for part B.
t = 45 minutes = 3/4 hour
v = ??
d = v * t
4 = v * (3/4)
v = 4/(3/4) = 4 * 4/3 = 16/3 = 5 1/3
So his rate of travel is 5 1/3 km/hr due east. If you do not give the direction when it says velocity, you are wrong. Velocity has direction.
B
10 45 to 11 45 is 1 hour.
d = v * t
d = 6 km due south (this is actually a displacement which also has direction).
t = 1 hour
6 = v * (1)
6/(1) = v
6/(1) = v
v = 1 km/ hr due south
How does the potential energy of an object change as its distance from the ground changes?
Answers
What unit of time on Earth is based on the rotation of the Earth? A. month B. day C. year D. hour
Answers
which of the following is not an example of a music parameter
Answers
Answer:
Fragmentation
Explanation:
APEX
is the equation 2C2H2+5O2=4CO2+2H20 A BALANCED EQUATION
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Another way it can be balanced is that u divide all of the numbers by 2... but u will obtain (5÷2) fraction if from of O2
Which of the following elements is the most reactive?
Chlorine
Bromine
Fluorine
Helium
Answers
Answer:
Fluorine is the most reactive element in this list
Explanation:
How many moles of Ca(OH)2 are in 3.5kg of Ca(OH)2? Answer in units of mole
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So, 1 kg =1000g.
3.5 x 1000 = 3500g Ca(OH)2
We need to know the molar mass of Ca(OH)2.
Ca= 40.08 g
O=2(15.999)
H=2(1.0079)
Add them all together and you get 74.0938 g.
Put it in the formula from mass to moles.
# of moles = grams Ca(OH)2 x 1 mol Ca(OH)2
--------------------
molar mass Ca(OH)2
3500 g Ca(OH)2 x 1 mol Ca(OH)2
---------------------
74.0938 g Ca(OH)2
So divide 1/74.0938 and multiply by 3500.
You will get about 47.24 moles Ca(OH)2.
Hope this helps! :)
Answer:
47.3 moles of [tex]Ca(OH)_2[/tex] are in 3.5 kilograms of [tex]Ca(OH)_2[/tex].
Explanation:
[tex]n=\frac{m}{M}[/tex]
Where:
n = Moles of the compound
m= Given mass of the compound
M = Molar mass of the compound
Mass of the calcium hydroxide, m = 3.5 kg = 3500 g (1kg = 1000 g)
Molar mass of the calcium hydroxide = M = 74 g/mol
Moles of calcium hydroxide = n
[tex]n=\frac{3500 g}{74 g/mol}=47.297 mol\approx 47.3 mol[/tex]
47.3 moles of [tex]Ca(OH)_2[/tex] are in 3.5 kilograms of [tex]Ca(OH)_2[/tex].
you see a coin at the bottom of a fountain of water but when you reach for it it is in another place than it appears to be
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During a phase change the temperature of a substance
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The temperature does not change. <<<<< answer
Answer:
remains constant
6.24 x 10^24 atoms Na to moles Na
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2. What charge does an electron have? a. Positive b. Negative c. Neutral d. No charge
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Which is the largest atom? A. Bromine (Br) B. Chlorine (Cl) C. Iodine (I) D. Fluorine (F)
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Explain why the following statements are true:
1) All matter is made up of atoms.
2) An electron with a proton equals a neutral charge.
3) All atoms are in constant motion.
please explain using complete sentences
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If 1.98 moles of C are reacted with an excess of Cu2O how many moles of CO would be produced? moles
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Using the balanced chemical equation 2C + Cu2O → 2CO + 2Cu, it can be determined that 1.98 moles of carbon will produce 1.98 moles of carbon monoxide (CO) when reacting with an excess of copper(I) oxide.
Explanation:The subject of this question is Chemistry, specifically dealing with stoichiometry which involves the calculation of the amounts of reactants and products in chemical reactions. Given that 1.98 moles of carbon (C) react with an excess of copper(I) oxide (Cu2O), we need to know the balanced chemical equation to find the amount of carbon monoxide (CO) produced.
The chemical equation for the reaction between carbon and copper(I) oxide to produce carbon monoxide and copper would be:
2C + Cu2O → 2CO + 2Cu
From this balanced equation, we can see that 2 moles of carbon react with 1 mole of copper(I) oxide to produce 2 moles of carbon monoxide. Therefore, if we start with 1.98 moles of carbon, we will also produce 1.98 moles of CO, since the ratio of carbon to carbon monoxide is 1:1.
When 1.98 moles of C are reacted with an excess of Cu2O, it would produce 1.98 moles of CO assuming the reaction follows the stoichiometry of 2 moles of C producing 2 moles of CO.
Explanation:If 1.98 moles of C are reacted with an excess of Cu2O, the number of moles of CO produced can be determined by using stoichiometry and the balanced chemical equation for the reaction. Unfortunately, the actual balanced chemical equation is not provided in the question. However, a typical reaction between carbon and copper (I) oxide might look like this:
2C(s) + Cu2O(s) → 2CO(g) + Cu(s)
According to this balanced equation, 2 moles of carbon react with 1 mole of copper(I) oxide to produce 2 moles of carbon monoxide. Therefore, if we have 1.98 moles of carbon, it would produce 1.98 moles of CO, assuming carbon is the limiting reactant and since there's an excess of Cu2O.
Classify these elements by whether they get oxidized or reduced in the reactions shown here: 2Ca(s)+ O 2 (g) F 2 (g)+2Li(s) → → 2CaO(s) 2LiF(s
Answers
Hope this helps :)
Calcium and lithium are oxidized and Florine and oxygen are reduced.
What are oxidizing agent?Oxidizing agent are defined as a substance or component that participates in an oxidation-reduction reaction and receives electrons from a separate species. The oxidizing agent, often referred to as the electron acceptor, is typically in one of its higher oxidation states since it will receive electrons and be reduced.
Reducing agent are defined as a reactant in an oxidation-reduction reaction that decreases another reactant by discharging electrons to that reactant. Reducing one's consumption of energy-dense foods and canceling undesired magazine subscriptions are two examples. Another example of reduction is to turn off the water when brushing your teeth rather than letting it run the full two minutes.
Thus, calcium and lithium are oxidized and Florine and oxygen are reduced.
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A 1.0 mole sample of HNO3 is added to water. The final volume of the solution is 1.5 L. Calculate the pH of the Solution
Answers
pH = 0.176
Explanation:
To get the pH, we will first need to calculate the molarity of the solution as follows:
Molarity = number of moles of solute / liters of solution
We have:
number of moles of solute = 1 mole
number of liters of solution = 1.5 L
Therefore:
Molarity = 1 / 1.5 = 2/3
Now, we will get the pH value as follows:
pH value can be calculated by taking the negative log for the H+ concentration, which is in this case the same as molarity.
Therefore:
pH = -log [H+] = -log [2/3]
pH = 0.176
Hope this helps :)
The pH of the solution is 1.12.
HNO₃ is a strong acid, which means it completely dissociates in water to form H⁺ and NO₃- ions.
The number of moles of HNO₃ added is 1.0 mole.
The final volume of the solution is 1.5 L, so the concentration of HNO₃ can be calculated as:
[HNO₃] = number of moles / volume (in liters) = 1.0 mole / 1.5 L = 0.67 M
Since HNO₃ is a strong acid, it completely dissociates to form H+ ions. Therefore, the concentration of H⁺ ions is equal to the concentration of HNO₃:
[H⁺] = [HNO₃] = 0.67 M
Now, we can calculate the pH using the following equation:
pH = -log[H⁺] = -log(0.67) = 1.12
Therefore, the pH of the solution is 1.12.