Answer:
true trust ong gotta be true fff
Help chemistry!!!!!!!
The reaction Ni(s) + S(s) --> NIS(s) is an example of which type of reaction?
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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:
What is the name of FeO4
Answer:
Ferrate (VI)
Explanation:
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
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:
The following is what type of reaction: 2Al(s) + 3CuCl2(aq) ---> 2AlCl3(aq) + 3Cu(s)
Answer:
single replacment
Explanation:
Ce presiune au 40L gaz la temperatura de 100⁰C, dacă la presiunea de 6 atm și temperatura de 50⁰C volumul ocupat este de 20L.
Answer:
3,46 atm
Explanation:
Tenemos;
P1 =?
T1 = 100 + 273 = 373 K
V1 = 40 litros
P2 = 6 atmósferas
T2 = 50 + 273 = 323 K
V2 = 20 litros
Desde;
P1V1 / T1 = P2V2 / T2
P1V1T2 = P2V2T1
P1 = P2V2T1 / V1T2
P1 = 6 * 20 * 373/40 * 323
P1 = 44760/12920
P1 = 3,46 atm
A blood droplet has a width of 42mm and length of 69mm. What is the angle of impact?
O 59
O 12
0 76
O 38
Determine the number of grams in 0.5 moles of H2 S04
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.
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:
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:
According to Reference Table G, how does a
decrease in temperature from 40°C to 20°C affect
the solubility of NH3 and KCl?
A) The solubility of NH3 increases, and the
solubility of KCl increases.
B) The solubility of NH3 increases, and the
solubility of KCl decreases.
C) The solubility of NH3 decreases, and the
solubility of KCl increases.
D) The solubility of NH3 decreases, and the
solubility of KCl decreases.
Answer:
A) The solubility of NH3 increases, and the
solubility of KCl increases.
Explanation:
The solubility of ammonia and potassium chloride increases with decrease in temperature from 40°C to 20°C.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
Learn more about solubility,here:
https://brainly.com/question/29589228
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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)
help plz 8th grade science
Answer:
B
Explanation:
Brainlest is apprciatedddddddddddd
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.
What is the electron configuration for germanium (Ge)?
Answer:
[Ar] 3d¹⁰ 4s² 4p²
Explanation:
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
is air a pure substance
No, air is not a pure substance. Because air contains other gases like Nitrogen, Carbon monoxide etc..,
How many moles are in 1.22 * 10^20 atoms of Si
Answer:
2.03 × 10⁻⁴ moles
Explanation:
To convert atoms to moles, use Avogadro's number (6.022 × 10²³).
(1.22 × 10²⁰ atoms)/(6.022 × 10²³ atoms/mol) = 2.03 × 10⁻⁴ mol
Answer:
7.35×1023 atoms
Explanation:
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
(WORTH 40 PTS.) Are the compounds in Figure 21-3 substituted hydrocarbons? How do you know?
Answer:
Yes
Explanation:
The compounds have both hydrogen and carbon only which are atoms that make up the hydrocarbons and they are also gases at room temperature
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
PLS HELP MY HOMEWORK IS DUE IN AN HOUR
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 moles contain 5.34 x 10^26 atoms of iron?
Answer: 1.31 × 10^47 sorry if its not the answer
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
What is the molar mass of Zn(NO3)2 ?
Answer:
molar mass of zn( no3) 2
is 189.36 g/ mol
PLEASE HELP ME ON THIS QUESTION ASAP!!!!
Answer:
To support the body, protect the organs, produce blood cells, and store calcium.
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.