Answer:
extreme/high
low
minerals
Explanation:
When Magma forms within the mantle what is the most often result? The most often result of this is high temperatures, and low pressure.
Somebody please answer
60 L of a 180 mol MgCl2 solution is created. What is the molarity of MgCl2 are in this solution?
Explanation:
Molarity = (# of moles)/(# of liters)
= 180 mol MgCl2/60 L
= 3.0M MgCl2
Consider the energy diagram below.
AY
B
Free Energy
Reaction Progression
Which line indicates a higher reaction rate?
A because it has a lower activation energy.
B because it has a lower activation energy.
Answer:
B because it has a lower activation energy.
Explanation:
Just took the test
The mass number of an atom can be calculated from the
Mass number (A) =protons (p+) + neutrons(n°)
write a story of your life when you were hurted by someone whom you trusted blindly...
Answer:
Sis I think it happened with me but I am not able to remember if u want u can share if it happened with u
If you have 1.82 moles of mercury (Hg), how many grams of mercury do you have?
Answer:
182
Explanation:
1 hectogram (hg) = 100 grams (g)
1.82 x 100 = 182
How many liters of phosphine are produced when 34 L of hydrogen reacts with an excess of phosphorus under STP?
Answer:
22.67 L of PH₃
Explanation:
The balanced equation is:
[tex]P_4 (s) + 6H_2(g) \to 4PH_3(g)[/tex]
From the equation:
[tex]34 L \times \dfrac{1 \ mol \ of H_2 }{22.4 \ L \ H_2} \times \dfrac{4 \ mol \ of \ PH_3}{6 \ mol \ H_2} \times \dfrac{22.4 \ L \ PH_3}{1 \ mol \ PH_3}[/tex]
= 22.67 L of PH₃
choose me physics subject
Jasmine travels a lot and collects rocks wherever she goes. She was examining two rocks from her collection, and she noticed that they are different types of rock. How could energy have played a role in the different rock types forming?
A. Energy changes rock on different continents in different ways. Each continent on Earth has different rock that might form liquid rock or small rock pieces when exposed to energy.
B. Energy caused one rock type to form, but not the other. Rock that forms because of energy is a different type of rock than rock that forms without energy.
C. Energy from different sources leads to different types of rock. Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into small pieces of rock.
D. Energy causes different types of rock to change in different ways. Energy changes igneous rock into liquid rock and changes sedimentary rock into small pieces of rock.
Answer:
C
Explanation:
energy from different sources leads to different types of rocks. energy inside the earth(volcanoes) melts rocks into liquid rock(molten larva) but energy from the sun(heat radiation) causes rock to weather(breakdown) into small pieces of rocks
How do we measure the rate of this reaction A + B —> C
An increase in temperature will cause an increase in diffusion rate because Multiple Choice hot molecules get smaller and therefore diffuse faster. the frequency and force of molecular collisions decreases. hot water changes to a solid, so diffusion is easier. hot water is thinner than cold water. the frequency and force of molecular collisions increases.
Answer:
hot water is thinner than cold water.
Explanation:
The rate of diffusion of a substance has a lot to do with the temperature of a body.
Let us take water for instance, cold water has a greater density than hot water. As a result of this, the molecules in cold water are slower when in motion and more sluggish.
On the other hand, the molecules of hot water are quite faster since hot water has a lower density(thinner than cold water).
Thus, an increase in temperature will cause an increase in diffusion rate because hot water is thinner than cold water.
describe and compare the trends in hardness for group 1 and group 2
elements?
Answer:
The key difference between group 1 and group 2 elements is that all group 1 elements have unpaired electrons in their outermost orbital, whereas group 2 elements have paired electrons in their outermost orbital.
The hardness of group 2 elements are harder than group 1 elements because they have a strong metallic bond and atoms are closely packed.
What are the group 1 and 2 elements?The group 1 elements are alkali metals and group 2 elements are alkaline earth metals. Group 1 contain 7 elements. Group 2 has 6 elements.
The difference between, group 1 elements have unpaired electrons in their outermost orbital, whereas group 2 elements have paired electrons in their outermost orbital.
Thus, the hardness of group 2 elements are harder than group 1 elements because they have a strong metallic bond and atoms are closely packed.
Learn more about group 1 and 2 elements
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someone help me with this please, it’s overdue:(
Answer:
See explanation.
Explanation:
Hello there!
3. In this case, according to the given question, it turns out possible for us to say that any chemical formula, for an ionic compound, has the cation (positive) on the left and the anion (negative) on the right; thus, since Mg is a metal, which tends to lose electrons and become positively charged whereas the Cl is a nonmetal, which tends to gain electrons and become negatively charged, we have the following:
[tex]Mg^{2+}Cl^-\\\\Mg^{2+}Cl^-_2\\\\MgCl_2[/tex]
4. In this case, since lithium is a metal, as well as magnesium, it is not possible for them to switch around their charges as they will not be bonded because they will be repelled rather than attracted because of their equal positive charges.
Regards!
For many purposes we can treat butane as an ideal gas at temperatures above its boiling point of . Suppose the pressure on a sample of butane gas at is cut in half. Is it possible to change the temperature of the butane at the same time such that the volume of the gas doesn't change? yes no If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C.
Answer:
A. Yes
B. The new temperature of the gas is -116 °C
Note: The question is incomplete. The complete question is given below :
For many purposes we can treat butane C H10) as an ideal gas at temperatures above its boiling point of - 1. °C. Suppose the pressure on a 500 mL sample of butane gas at 41.0°C is cut in half. Iyes Is it possible to change the temperature of the butane at the same time such that the volume of the gas doesn't change? yes no If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C.
Explanation:
A. According to the pressure law of gases,for a fixed mass of gas the pressure of a gas is directly proportional to its Kelvin temperature once the volume is kept constant. This means that a change in temperature can bring about a change in pressurein a gas at constant volume.
B. From the pressure law of gasese: P1/T1 = P2/T2
Where initial pressure = P1, final pressure = P2
Initial temperature = T1, final temperature = T2
For the butane gas;
P1 = P
P2 = P/2
T1 = 41°C = (273 + 41 ) K = 314 K
T2 = ?
From the equation, T2 = T1 × P2 / P1
T2 = 314 × P/2 /P
T2 = 157 K
T2 = (157 - 273) °C = -116 °C
Therefore, the new temperature of the gas is -116 °C
match the molecular shapes to the correct Lewis structures
trigonal pyramid
trigonal planar
bent
tetrahedral
linear
Answer:
Match up correct answers:
1) trigonal planar
2) tetrahedral
3) trigonal pyramid
4) linear
Explanation:
(correct answers on portal and edmentum users)
Hope I was helpful, have a great day and good luck :)
AlH₃ - trigonal planar
CH₂F₂ - tetrahedral
PH₃ - trigonal pyramidal
O₃ - bent
What is a Lewis structure?The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as dots or, in the case of a bond, as a line connecting the two atoms.
How do you determine the molecular shape?Depict the Lewis Structure.Determine if the electron groups are in bond pairs or are lone pairs by counting the number of electron groups. Keep in mind that lone pairs and bonds are both included in electron groups!The electron-group geometry is named. (Specify if it is octahedral, tetrahedral, trigonal-bipyramidal, or linear.)The molecular geometry is determined by examining the locations of the surrounding atomic nuclei. (Count the number of lone pairs)Learn more about molecular geometry here:
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can someone please do the balanced equation for potassium fluoride?
Answer:
K + F2 = KF
Explanation:
Thats the balancee equation for potassium fluoride. The equation is 2K + F2 → 2KF and the balanced equation is K + F2 = KF
How many molecules of ethanol, C2H5OH, are contained in a 150. gram sample?
1.96 x 1024
46.0
6.02 x 1023
5.1 x 10-25
Answer:
1.96 × 10²⁴ molecules
Explanation:
Step 1: Given data
Mass of ethanol (m): 150. g
Step 2: Calculate the number of moles (n) corresponding to 150. g of ethanol
The molar mass of ethanol is 46.07 g/mol.
150. g × 1 mol/46.07 g = 3.26 mol
Step 3: Calculate the number of molecules in 3.26 moles of ethanol
To convert moles into molecules, we need Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.
3.26 mol × 6.02 × 10²³ molecules/1 mol = 1.96 × 10²⁴ molecules
Which equation represents a transmutation?
Answer:
A
Explanation:
edge21
How many grams of P2Cl5 are produced if 2.00 moles of P reacts with an excess of Cl2?
Answer:
[tex]m_{P_2Cl_5 }=239.2125gP_2Cl_5[/tex]
Explanation:
Hello there!
In this case, according to the reaction:
[tex]4P+5Cl_2\rightarrow 2P_2Cl_5[/tex]
Thus, since there is a 4:2 mole ratio of P to P2Cl5 and the molar mass of the later is 239.2125 g/mol, we obtain the following mass as the produced one:
[tex]m_{P_2Cl_5 }=2.00molP*\frac{2molP_2Cl_5}{4molP} *\frac{239.2125gP_2Cl_5 }{1molP_2Cl_5} \\\\m_{P_2Cl_5 }=239.2125gP_2Cl_5[/tex]
Regards!
Plz help plz help me will mark Brainly
Answer:
Greenhouse gases absorb some of the energy and trap it in the lower atmosphere. Less heat radiates into space, and Earth is warmer. Many greenhouse gases occur naturally. Carbon dioxide, methane, water vapor, and nitrous oxide are naturally present in Earth's atmosphere. Since some of the extra energy from a warmer atmosphere radiates back down to the surface, Earth's surface temperature rises.
Hope this helped! :)
True or False When one side of a molecule is electronegative (δ-) and the other side of the
molecule is electropositive (δ+), it is said to have a dipole moment. Water has
a dipole moment.
Answer:
True; When one side of a molecule is electronegative (δ-) and the other side of the
molecule is electropositive (δ+), it is said to have a dipole moment.
Explanation:
A dipole moment exists in a molecule as a result of differences in the electronegativity values between the atoms of the elements involved in the chemical bonding.
When a strogly electronegative atom such as oxygen or chlorine is chemically bonded to a less electronegative or an electropositive atom such as hydrogen, there is an uneven sharing of the electrons involved in the bonding. The more electronegative atoms tends to draw the shared electrons mostly to themselves. This induces a partially negative charge (δ-) on them while leaving the electropositive atoms with a partially positive charge (δ+).
Water is an example of a molecule having a dipole moment. The oxygen atoms are more electronegative than hydrogen and as such draw the shared electrons to themselves more, inducing a partial positive charge (δ+) on the hydrogen atoms while they themselves develop a partial negative charge (δ-).
explain the process of finishing
Answer:
[Your answer would be in this document of mine below] Thanks :D
Explanation:
Which of the following statements explains how concentration of a solution affects the rate of a reaction? (5 points)
O a
When concentration decreases, kinetic energy increases.
Ob
When concentration increases, particles collide less often.
When concentration increases, particles collide more often.
Oc
Od
When concentration decreases, collision of particles increases.
Answer:
when concentration increases, particles colide more often
The statement "When concentration increases, particles collide more often" is correct.
What is concentration?A constituent's abundance divided by the entire volume of a combination is known as concentration. Mass concentration, molar concentration, number concentration, and volume concentration are all examples of mathematical descriptions.
There are much more reactant particles travelling together as the concentration of reacting species increases. Because there would be more collisions, the reaction rate will be faster. The rate of a reaction increases as the concentration of reactants increases.
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8. Sulfur has a first ionization energy of 1000 kJ/mol. Photons of what frequency are required to ionize one mole of Sulfur?
Answer:
the frequency of photons [tex]v = 1.509\times10^{39}Hz[/tex]
Explanation:
Given: first ionization energy of 1000 kJ/mol.
No. of moles of sulfur = 1 mole
[tex]\Delta E_1 = 1000KJ/mol[/tex]
We know that plank's constant
[tex]h = 6.626\times10^{-34} Js[/tex]
Let the frequency of photons be ν
Also we know that ΔE = hν
this implies ν = ΔE/h
[tex]= \frac{10^6J}{6.626\times10^{-34} Js}[/tex]
[tex]v = 1.509\times10^{39}Hz[/tex]
Hence, the frequency of photons [tex]v = 1.509\times10^{39}Hz[/tex]
If a balloon has a volume of 1.696 L at a pressure of 2.11 0 atmospheres, what will be the volume of the balloon if the pressure is increased to 5.067 atmospheres?
Answer:
I think that the volume will be 1.414
Explanation:
According to the formula of boyle's law P1 V1 = P2 V2
We have to find V2 so:
V2 = P2/P1 V1
By putting the values:
V2 = 5.06/2.11 * 1.696
V2 = 5.06/3.578
V2 = 1.414
Please give me brainliest, it will mean a lot to me.
The tertiary structure of a protein is a complex arrangement formed as the polypeptide chain folds and twists.
a. True
b. False
Answer:
True
Explanation:
The tertiary structure of a protein is a complex arrangement formed as the polypeptide chain folds and twists.
This folding & twisting of polypeptide chain leading to its complex structure, is true about tertiary structure of protein. It occurs due to different interactions between side chains of amino acids.
One of the governing laws of the universe is the thermodynamic law of entropy. Which choice best describes entropy?
A. Particles and energy in a system become more and more disordered.
B. Energy is consumed in a chemical reaction.
C. Heat is evenly distributed throughout the universe.
D. More bonds are broken in a chemical reaction than bonds are formed.
A.
Particles and energy in a system become more and more disordered.
The ionization potential of Be atom is more than expected because it has -
(a) half filled valence p orbitals
(b) fully filled valence s orbitals
(c) both a and b
Answer:
(b) fully filled valence s orbitals
Explanation:
Electron configuration of Be: 1s22s2
2s2 is fully filled
what it meant by executive mention the function of Executive
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:⌐■-■}}}}}[/tex]
Definition:-
The organ of government that primarily looks after the function of implementation and administration is called the executive.
Function:-
Executive is the branch of government responsible for the implementation of laws and policies adopted by the legislature.
ThanksHope it helps.Question 4 (10 points)
If a sollition has a pOH of 5.2 the [OH-] of the solution is
оа
6x 10-6 M
Ob
6.3 x 10-6 M
Oc
1.58 x 10-5M
Od
2x10-5M
Answer:
Explanation:
Qué uso le darías en la vida diaria ayuda
Answer:
ako po kailangan ko po nga ayuda
Explanation:
thanks for the points ❤️