Answer:
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
Explanation:
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How many moles of Fe2O3 can be made from 50 moles of Fe?
Answer: Synthesis
0.84 moles of oxygen
25 moles of [tex]Fe_2O_3[/tex]
Explanation:
The balanced chemical equation is:
[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]
This is a synthesis reaction as one product is formed by combination of two reactants.
According to stoichiometry :
a. 2 moles of [tex]Fe_2O_3[/tex] require = 3 moles of [tex]O_2[/tex]
Thus 0.56 moles of [tex]Fe_2O_3[/tex] require=[tex]\frac{3}{2}\times 0.56=0.84moles[/tex] of [tex]O_2[/tex]
b. 4 moles of [tex]Fe[/tex] give = 2 moles of [tex]Fe_2O_3[/tex]
Thus 50 moles of [tex]Fe[/tex] give =[tex]\frac{2}{4}\times 50=25moles[/tex] of [tex]Fe_2O_3[/tex]
How many molecules of calcium chloride are in 3CaCl2
A closed flask contains gas at STP. If the temperature is raised to 400 K what will the pressure be in atm?
Answer:
The answer is 1.5 atm
Explanation:
Newton's Third Law of Motion: "For every action there is an equal and opposite reaction." What is a force pair? Are they easy to identify?
Answer:
A force pair is a couple of forces which are acting on any given body from opposite directions called action-reaction forces.
One can simply identify the force pair by identifying two objects which are interacting and by describing who is pushing whom and by identification of their drawing.
A book resting on table has two participants, a book applying force downwards due to gravity and the table pushing it away from the earth surface. These are action and reaction forces.
The following is what type of reaction: 2Al(s) + 3CuCl2(aq) ---> 2AlCl3(aq) + 3Cu(s)
Answer:
single replacment
Explanation:
PLEASE HELP ME ON THIS QUESTION ASAP!!!!
Answer:
To support the body, protect the organs, produce blood cells, and store calcium.
Is mercury chloride ionic or covalent
Answer:
ionic
Explanation:
ionic compounds contain a metal and a nonmetal. Mercury is a metal and Chlorine is a non metal
The reaction Ni(s) + S(s) --> NIS(s) is an example of which type of reaction?
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What is a food web?
A. A group of animals
B. A producer and consumer relationship
C. A food chain with two levels
D. How several food chains are related
Answer:
D. How several food chains are related
Explanation:
can someone let me know if i did this right ?
When we put elements on the periodic table we use the______
mass.
Answer:
They are placed on the periodic table based on their atomic number.
Explanation:
In the chemistry table, you can find the molecular mass and atomic number. Atomic number represents the number of the protons of an atom, and molecular mass represents the mass of the atom. The mass of an atom is made from proton and neutron. The element is made by arranging it based on the number of protons, which was the atomic number.
Answer:
When we put elements on the periodic table we use the atomic mass
help plz 8th grade science
Answer:
B
Explanation:
Brainlest is apprciatedddddddddddd
Will mark brainly
ASAP
Answer:
A. Shivering
Explanation:
This is the job of the excretory system. You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled.
Determine the number of grams in 0.5 moles of H2 S04
How many grams of chlorine gas can be produced from the decomposition of 1.46x1023 formula units of AuCl3?
2 AuCl3 2 Au + 3 Cl2
Group of answer choices
A.33.6 g
B.25.8 g
C.195 g
D.11.4 g
Answer:
c
Explanation:
during a chemical reaction, a substances composition changes. What does composition relate to in this context
Answer:
Composition can be referred to as it's build.
Explanation:
An example is when wood is burned, its structure is no longer compact. It is now ash.
How many moles contain 5.34 x 10^26 atoms of iron?
Answer: 1.31 × 10^47 sorry if its not the answer
Explanation:
On a coordinate plane, which single transformation could map point A (3,-4) onto point A' (1.5,-2)? *
Answer: A dilation with rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
Explanation:
A dilation is a non-rigid transformation that creates an image that is the same shape as the original but has a different size.
It uses a scale factor k such that
[tex](x,y)\to(kx,ky)[/tex]
(x,y)= coordinates of original figure
(kx,ky) = corresponding coordinate in the image.
To transform: A (3,-4) onto point A' (1.5,-2).
Using scale factor k= [tex]\dfrac12[/tex], we have
[tex]A(3,-4)\to A'(\dfrac12\times3, \dfrac12\times-4)=A'(1.5,-2)[/tex]
Required rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
What is the molar mass of Zn(NO3)2 ?
Answer:
molar mass of zn( no3) 2
is 189.36 g/ mol
How many moles of Iron (II) oxide are present in a 34.5 gram sample?
Answer:
0.609 Is the answer.
Explanation:
I hope this helped
Given the balanced equation representing a reaction:
2NO + 0, → 2NO, + energy
The mole ratio of NO to NO2 is
A)
1 to 1
B)
2 to 1
C)
3 to 2
D)
5 to 2
is air a pure substance
No, air is not a pure substance. Because air contains other gases like Nitrogen, Carbon monoxide etc..,
A container of nitrogen gashas a pressure of 256.4mm Hg at 362K. If the temperature is decreased to 251K, what is the pressure of the gas in the container?Circle the Correct Answer: (106mmHg or 178mmHg)
What is the name of FeO4
Answer:
Ferrate (VI)
Explanation:
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A stack of atoms on the periodic table is a column. Another name for this is a ________________.
What is the electron configuration for germanium (Ge)?
Answer:
[Ar] 3d¹⁰ 4s² 4p²
Explanation:
What is the function of the right side of the heart?
takes in oxygen rich blood from the lungs
carries oxygen and nutrients from the arteries to the tissues
releases oxygen rich blood to the veins
takes in blood from the body that has no oxygen
Na2SO4(aq) + CaCl2(aq) --> CaSO4(s) +
2NaCl(aq) is an example of which type of
reaction?
decomposition
synthesis
single replacement
double replacement
Answer:
double replacement
Explanation:
An analysis of a saturated solution of silver chromate, Ag2CrO4, reveals that the concentration of Ag+ is 1.3 x 10-4 Molar. What is the Ksp of Ag2CrO4? A. 2.3 x 10-12 B. 8.8 x 10-12 C. 1.9 x 10-8 D. 1.3 x 10-4 E. 3.1 x 10-4
Answer:
B. 8.8 x 10⁻¹²
Explanation:
In aqueous solution, silver chromate (Ag₂CrO₄) dissociates into ions as follows:
Ag₂CrO₄(s) ⇄ 2 Ag⁺(aq) + CrO₄²⁻(aq)
2s s
So, the expression of the Ksp of Ag₂CrO₄ is derived from the concentrations of the ions at equilibrium raised by the stoichiometric coefficients:
Ksp = [Ag⁺]²[CrO₄²⁻] = (2s²)s = (4s²)s = 4s³
Since s = [Ag⁺] = 1.3 x 10⁻⁴ M, we calculate the Ksp as follows:
Ksp = 4s³= 4(1.3 x 10⁻⁴)³ = 8.79 x 10⁻¹² M
Therefore, the correct option is B. 8.8 x 10⁻¹²
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Name 5 different foods with carbohydrates.