Answer:
hmmm
Explanation:
about cguro sa planethope nka tulong
What happens during the rock cycle?
Name the two minerals involved in the formation of wollastonite
Why do engineers use metals in making
electrical wires
Answer:
Why is copper used for most electrical wiring? All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through. The lower the level of resistivity, the more electrical conductivity a metal has
Please help me ASAP
HELP PLZ ITS DUE IN 10 MIN "Jack's model includes one object consisting of two molecules and one object consisting of six molecules. He put 16 energy cubes in each object and stated that his model showed the two objects at equilibrium. Explain what is wrong with Jack's model."
(I know it looks long but basically I just need help with finding what's wrong with the model)
Answer: the molecules have different energy and the system is not in equilibrium
Explanation:
The model developed by Jack has the same energy for each of the two objects, but as each object is made up of a different number of molecules, in the system with more molecules, object 2, each one has approximately 2.4 less energy and the molecules of Object 1 have an E / 2 energy.
So when you book them together the molecules have different energy and the system is not in equilibrium
Jack presented the model as if the two objects were in energy balance, but this is not possible, as each object has a different number of molecules.
We can arrive at this answer because:
For the system presented in Jack's model to be in energetic balance, it would be necessary for the two objects present in the model to have the same number of molecules.This is because, with equal amounts of molecules, each object would be able to emit the same amount of energy.However, the object with fewer molecules tends to emit less energy than the object with more molecules.This allows for an uneven, unbalanced emission of energy in the system and this unevenness is not presented in Jack's model.
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True or False: Inertia is an object's resistance to change *
Answer:
True? I think.........
What is the approximate value of the equilibrium constant K P for the change C 2 H 5 OC 2 H 5 ( l ) ⇌ C 2 H 5 OC 2 H 5 ( g ) at 25 ° C. (The equilibrium vapor pressure for this substance is 570 torr at 25 ° C.) 760 torr = 1 atm R = 0.0821 L * atm / (mol * K)
Answer:
Kp for this equilibrium ≅ 570
Explanation:
This is a situation where we have an heterogeneous mixture.
We get gas from liquid state:
C₂H₅OC₂H₅ (l) ⇌ C₂H₅OC₂H₅ (g)
In order to determine Kc → [C₂H₅OC₂H₅ (g)], in equilibrium
Liquid or solid do not count for Kc, neither Kp
Kp → Partial pressure of C₂H₅OC₂H₅ (g)
Kc or Kp at equilibrium do not depend on the amount of liquid, there is; although it cannot be null since otherwise there would be no reaction.
Kp for this equilibrium ≅ 570
(Value for partial pressure in the only gas).
In order to determine Kc we can replace data at this formula
Kp = Kc (R . T)^ ⁽ⁿ ⁻ ⁿ°⁾
Where n - n° is the difference between the moles of produced gas. We only have 1 mol.
Kp = Kc (298K . 0.082)¹
570 Torr / (298K . 0.082) → Kc
9.32 x 1024 atoms of NaOH
Explanation:
65463.68 atoms of NaOh I believe.. I really dont know sorry
Please help me with this thank you
How many elements are in (NH4)3PO4
Answer:
4
Explanation:
There are 4 different elements in the compound (N, H, P, O) but if you want to count the number of each element then the answer is different.
In NH4, theres 1 N and 4 H, but since there are 3 NH4s then u have 3 N and 12 H. There's 1 P and 4 Os as well.
Added together u have 3 + 12 + 1 + 4 = 20 elements in total.
hope this helps!
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. H2(g)+P4(s)=4PH3(g)
Answer: 6H2+P4–>4PH3
Explanation:
3CuCl2 + 2Al = 2AlCl3 + 3Cu
Using the molar ratio between the limiting reactant (aluminum) and the product copper, determine the theoretical yield of copper.
Answer:
0.014 theoretical yield and 79% percentage yield
Answer:
0.014 theoretical yield and 79% percentage yield
:)
Explanation:
How does fog rising off water compare to plant growth?
The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.
How many atoms for each element in this compound:
5ZnSO4
Zn =
S =
O=
How many TOTAL atoms? =
The number of atoms of each element are:
The number of atoms of Zn is 5 atom.The number of atoms of S is 5 atoms.The number of atoms of O is 20 atoms.The total number of atoms is 30 atoms.From the question given above, we obtained:
5ZnSO₄
The number of each atom of each element present can be obtained as follow:
Zn = 5 × 1
Zn = 5 atoms
S = 5 × 1
S = 5 atoms
O = 5 × 4
O = 20 atoms
Total atom = atoms of (Zn + S + O)
Total atom = 5 + 5 + 20
Total atom = 30 atoms
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Abel was running a fever of 107 degrees Fahrenheit, what was her temperature in degrees
Celsius?
which of these has 170 degree in fahrenheit and
Answer:
we know the formula to convert Fahrenheit to Celsius =(F-32)(5/9)
=(107-32)(5/9)
=(75)(5/9)=375/9=41.6degree Celsius
AgNO3 ionic or covalent
Answer:
what i need more details
Explanation:
Answer:
Ionic
Explanation:
AgNO3 is also highly soluble in water. Ionic means that the compound is composed of ions.
How are seasons different North & South of the equator
Answer:
seasons experienced by the northern and southern hemisphere always differ by six months when it is summer in the northern hemisphere, it is winter in the southern hemisphere
Explanation:
Answer:
ohhhhhhh she -he was having a point
If the ecosystem is balanced, which populations should be the largest? Which should be the smallest?
Answer:
In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. This answer has been confirmed as correct and helpful.
Explanation:
The engineering process defines the steps engineers take to create
technology. Which of these describes these steps in the correct order?
A. Identifying a need, researching the background of that need,
making a plan to meet the need, doing the work, evaluating the
results, looking for improvements
B. Identifying a problem, testing various solutions, researching side
effects of each solution, choosing a solution, looking to improve
the solution, planning how to test the solution
C. Identifying a problem, brainstorming solutions, researching the
background of each solution, testing solutions, choosing a
solution, production, making future improvements
D. Identifying a problem, making a solution, testing the solution,
mass production, making improvements
Answer:
A.
Explanation:
Common sense<3
Answer:
A. Identifying a need, researching the background of that need,
making a plan to meet the need, doing the work, evaluating the
results, looking for improvements
Explanation: A P EX
Imagine a foreign mountain lion species is introduced into the ecosystem. How will it affect the other organisms?
Answer:
if a foreign lion species is introduced into the ecosystem then it can affect the ecosystem in anyway...
Explanation:
because there are chances that the lion might substitute the other predators present in that region.there are chances that the ecosystem may maintain the equillibrium.
HOPE IT HELPS PO(◍•ᴗ•◍)❤
Write a balanced molecular, ionic, and net ionic equation for the following reaction. Assume the reaction occurs in
aqueous solution.
K2(C2O4)(aq)+CaCl2(aq) to
2KCl(aq)+ Ca(C2O4)(s)
balanced?
Ionic Equation:
Net Ionic Equation:
Answer: The balanced molecular equation is:
[tex]K_2(C_2O_4)(aq)+CaCl_2(aq)\rightarrow 2KCl(aq)+Ca(C_2O_4)(s)[/tex]
The ionic equation is:
[tex]2K^+(aq)+C_2O_4^{2-}(aq)+Ca^{2+}(aq)+2Cl^-\rightarrow 2K^+(aq)+2Cl^-(aq)+Ca(C_2O_4)(s)[/tex]
The net ionic equation:
[tex]C_2O_4^{2-}(aq)+Ca^{2+}(aq)\rightarrow Ca(C_2O_4)(s)[/tex]
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced molecular equation is:
[tex]K_2(C_2O_4)(aq)+CaCl_2(aq)\rightarrow 2KCl(aq)+Ca(C_2O_4)(s)[/tex]
Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.
The ionic equation is:
[tex]2K^+(aq)+C_2O_4^{2-}(aq)+Ca^{2+}(aq)+2Cl^-(aq)\rightarrow 2K^+(aq)+2Cl^-(aq)+Ca(C_2O_4)(s)[/tex]
The ions which are present on both the sides of the equation are potassium and chloride ions. and hence are not involved in net ionic equation.
The net ionic equation:
[tex]C_2O_4^{2-}(aq)+Ca^{2+}(aq)\rightarrow Ca(C_2O_4)(s)[/tex]
What information can a mineralogist learn from testing the mass and volume of a mineral?
Which is a chemical property of sulphur?
A. It is a solid.
B. It is combustible.
O c. It is odorless.
D. It is yellow.
O E. It has density.
A, O and D
and its sulfur luv ♡ not sulphur
How many molecules are present in 0.93 grams of Fe2O3?
Answer:
5.8125*10^-3
the moles in Fe2O3 are 0.93/(56*2 + 16*3) = 5.8125*10^-3
define Common ion effect
PLS HELP!!! i have no idea what this could be
Answer:
121.5g
Explanation:
from the equation:
2mol of Al react to give 3 mol of Zn
i.e 81g of Al will give 3×81/2 = 243/2 = 121.5g
In the tropical rainforests, birds have evolved to eat the brightly-colored fruits. The fruits have evolved their attractive color so the birds will eat them and spread their seed. What theory is this an example of? A artificial selection b coevolution c mutation d natural selection
Answer:
coevolution
Explanation:
Coevolution plays a key role in shaping the biodiversity on Earth. Coevolution is commonly defined as reciprocal evolutionary changes brought about by interactions between species, implying that interacting species impose selection on each other(Science direct).
We can see that the change that occurred in the plants of the tropical rainforests is closely related to their link to birds. The fruits evolved an attractive color so that birds, having evolved to eat the brightly-colored fruits, may eat them.
What is the manipulated variable, responding variable, and controlled Variable
observe different electrolytes in a wet cell that will light a
bulb most brightly.
Answer:
Manipulated/independent variable- DIFFERENT ELECTROLYTES
Responding/dependent variable- BRIGHTNESS OF BULB
Controlled variable- WET CELL
Explanation:
The independent variable, also known as manipulated variable is the variable that the experimenter changes or manipulates in an experiment. In this case where different electrolytes are observed to see which will light a bulb most brightly, the manipulated variable is the DIFFERENT ELECTROLYTES.
Dependent or responding variable is the variable of an experiment that responds to the changes made to the independent variable. It is the variable that is being measured in an experiment. In this case, the BRIGHTNESS OF BULB is dependent on the electrolyte used, hence, it is the responding variable.
Controlled variable or constant is the variable that the experimenter keeps the same throughout the experiment. In this case, the WET CELL is kept constant for all the electrolytes used i.e. it is not changed, hence, the WET CELL is the controlled variable.
Draw a model to represent the physical property of metals known as ductility, or the ability to be drawn into a wire.
The model that represents the physical property of metals known as ductility can be seen in the image attached below.
Metals are substances that are good conductors of heat and electricity.
The term ductility is a characteristic of metal and it explains the ability of metals to be drawn into wire. it implies that metal materials can be hammered and beaten into tiny sheets of wires.
The model in the image attached below shows how gold which is metal is drawn into wires.
Learn more about metals here:
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A bond between two iodine atoms would have what as the percent ionic character
A. 53%
B. 83%
C. 0%
D. impossible to calculate
Answer:
Your answer should be 53%
I'm very sorry if I'm wrong I have not done this in forever
Explanation:
No explanation