Answer:
K = [NO₂]⁴[O₂] / [N₂O₅]²
Explanation:
Based on the chemical equilibrium reaction:
2 N₂O₅(g) ⇄ 4NO₂(g) + O₂(g)
The equilibrium reaction is obtained as the ratio between the multiplication of the concentrations of the reactants over the products powered to its reaction coefficient. That is:
K = [NO₂]⁴[O₂] / [N₂O₅]²Hannah wants to make some toast for breakfast, but she has 3 minutes before she has to leave for school.
She knows toasting bread is a chemical change so what is the best way for Hannah to increase the rate of this chemical change?
Answer: increase the temperature of the toaster oven.
Explanation:
PLS HELP ITS DUE SOON!! I REALLY NEED HELP ILL GIVE BRAINLIEST I PROMISE
i think its 50% bc its half of the box
Answer:
100%
Explanation:
What is the number after an element in a chemical equation called? Example: H2
a. subscript
b. coefficient
c. atom
d. equation
Answer:
the answer to your problem is A.Subscript...BRAINLIEST
Vanadium-48 has a half life of 16 days. If a 800.0 gram sample is allowed to stand for 80.0 days how much vanadium-48 will remain?
Answer:
25 g
Explanation:
N/No = (1/2)^t/t1/2
N= amount of radioactive material at time t
No = amount of radioactive material initially present
t= time taken
t1/2 = half life of the radioactive material
Substituting values;
N/800 = (1/2)^80/16
N/800= (1/2)^5
N/800= 1/32
32N = 800
N= 800/32
N= 25 g
someone help pls :,)
Answer:D
Explanation:
Cause I literally just did this
Use the drop Dow menus to select the names of the labeled structures
Answer:
theres no picture
Explanation:
The asthenosphere is more viscous and thick than the mesosphere
TRUE OR FALSE?
PLEASE HELP! this is a science test/quiz I’m pretty sure the answers are on the bottom if not please comment so I can tell you them
Vitamin D is created with the help of sun. You need vitamin D to help your body absorb ___________ which is important for the health of your bones.
Answer:
Calcium hope it helped
Explanation:
Which of the following is a molecular compound?
F) NO2
G) Ca(NO3)2
H) H2SO4
J) NaOH
Answer: H
Explanation:
what is this thermodynamic?
Answer:
oh coooool
I have one Id it is on ace with maybe 5800 points
maybe this picture will help in something
What do most of the plants photosynthesis occurs in ?
CH4 + 202 → CO2 + 2H2O
How many grams of O2 needed to produce 36 grams of H2O?
Answer:
Mass = 64 g
Explanation:
Given data:
Mass of water produced = 36 g
Mass of oxygen needed = ?
Solution:
Chemical equation:
CH₄ + 2O₂ CO₂ + 2H₂O
Number of moles of water produced:
Number of moles = mass/molar mass
Number of moles = 36 g/ 18 g/mol
Number of moles = 2 mol
Now we will compare the moles of water and oxygen.
H₂O : O₂
2 : 2
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 2 mol × 32 g/mol
Mass = 64 g
Determine the molecular shape of each compound based on their Lewis structures. NO2 bent linear trigonal planar
Answer:
Bent
Explanation
Ed
Answer:
ANSWER- C: tetrahedral
Determine the molecular shape of each compound based on their Lewis structures.
CH2Cl2
bent
linear
tetrahedral
Explanation:
hope this helped :)
PLEASE HElP ASAP!!!!!!
Answer:
1 hour
Explanation:
2. How do we find the number of neutrons in an atom?
(10 Points)
a. Add the protons and electrons
b. Subtract the protons from the electrons
c. Subtract the atomic number from the atomic mass
d. Subtract the atomic mass for the atomic number
Answer:
For all atoms with no charge, the number of electrons is equal to the number of protons. The mass number, 40, is the sum of the protons and the neutrons. To find the number of neutrons, subtract the number of protons from the mass number.
Explanation:
Answer:
Letter C. Subtract the atomic number from the atomic mass
How plants adapt to temperature variation
A student has three solid samples: one compound with covalent bonds, one compound with ionic bonds, and one compound with metallic bonds. The sample with metallic bonds is mostly likely to have which characteristic?
Answer: Hmm.. i'll try to figure it out hang on..
Explanation:
Zachary adds 9.7 g to 1.114 g.
How many significant figures should his answer have?
6CO2 + 6H2O → C6H12O6 + 602
How many molecules of CO2 are present
Answer:
12 hydrogen + 12 hydrogen = 24 hydrogen
Hydrogen was transferred from sugar and water on the left to water on the right releasing
Explanation:
identify the oxidizing agent and the reducing agent for Ca(s)+Fe2+(aq)→Ca2+(aq)+Fe(s)
Answer:
Ca reducing agent
Fe2+ Oxidizing agent
Explanation:
Ca ------> Ca2+ +2electrons.
Calcium loses two electrons and oxidises itself and reduces others so Ca is a reducing agent.
Fe2+ +2electrons ------> Fe
Fe 2+ reduces itself by gaining electron and oxidizes other so Fe2+ is Oxidizing agent.
PLEASE ASAP
HELP!!!!!!!!
Answer:
sec explanation: It is because it goes by order sec, min, day, month, and year etc
Answer:
sec
Explanation:
which statement accurately describe stars
What is wrong with writing the electron configuration of a ground state atom as 1s2 2s2 2p6 3s2 3p6 4s2 4d1?
Answer:
4d - orbital makes the given electronic configuration wrong.
Explanation:
The order of electronic configuration is written as;
1s²
2s² 2p⁶
3s² 3p⁶ 3d¹⁰
4s² 4p⁶ 4d¹⁰ 4f¹⁴
5s² 5p⁶ 5d¹⁰ 5f¹⁴
6s² 6p⁶ 6d¹⁰ 6f¹⁴
7s² 7p⁶ 7d¹⁰ 7f¹⁴
In order of energy level from the lowest to the highest, the configuration of the given atom in ground state can be written as;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹, when compared to the given configuration, 4d orbital makes the given configuration wrong, because the next orbital after 4s is 3d.
Given 7.3 moles of Ethane Gas (C2H6) and Excess Oxygen, how many moles of CO2 would be produced in the following combustion reaction? Round to 1 decimal place. Assume 1 Mole Ethane = 30.07 g of Ethane
2C2H6 + 7O2 --> 4CO2 + 6H2O
Answer:
Explanation: Find moles of product formed when C2H6 is burned in excess oxygen? Mass percent of ethane in a mixture before it goes through combustion with propane. Combust to create water and co2. Using gas stoichiometry find the volume of sulfur burned in excess of oxygen: Gas pressure inside a vessel: 1.60 grams of methane (CH4) is combusted.
NaNO3 ———> **heat above the arrow**
NaNO2 + O2
1. What kind of reaction is the one above? *
O A. Single replacement
O B. Double replacement
O C. Composition aka synthesis
O D. Decomposition
O E. Organic combustion
Answer:
D (Decomposition)
Explanation:
This reaction is a decomposition reaction because one substance (NaNO3) is being separated into two substances (NaNO2 and O2). Alternatively, you could use the process of elimination. The reaction can't be single/double replacement because there's only one reactant, it can't be synthesis because substances are being broken down, not formed, and it can't be combustion because O2 is a product, not a reactant, and CO2 and H2O aren't being produced, as is common with combustion reactions.
Classify the following compound as an alkane, alkene, or alkyne.
Answer:
I think it's alkyne!
Please give brainliest!
The compounds containing triple bonds between carbon atoms are called alkynes. The given compounds contains one triple bond between two carbons atoms hence, it is an alkyne.
What are alkynes ?Hydrocarbons are organic compounds containing carbon- hydrogen bonds. There are three types of hydrocarbons namely alkanes, alkene and alkynes.
Alkanes are compounds containing only single bonds between all carbon atoms in the chain. Alkanes are called saturated hydrocarbons. Alkenes are unsaturated because they contains one or more double bonds between carbon atoms.
Alkynes are compounds with one or more triple bonds between carbon atoms in the chain. Alkynes are also unsaturated. The given compound contains one triple bond between a pair of carbon atoms. Thus, it is an alkyne.
Find more on alkynes:
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NOBLE GASSES) Why’ are they Inert tho
Answer:
Why? Because of electron shells. Technically, they're not fully inert. They have very low reactivity potential, and can only be forced to become reactive with difficulty.
Explanation:
All chemical reactivity is made possible through the atom's electron arrangement. Electrons basically have shelves where they live, called "levels" or "shells". Each level is farther from the nucleus than the previous one. Atoms are most stable when their outer most shell (called the valence shell) is full. Atoms with an incomplete shell will react with other atoms, in an attempt to either fill out the outer shell, or to rid itself of it's valence electrons so that that previous level becomes a full valence level. If the valence shell ils already full, the atom will not be inclined to create compounds.
The first shell can hold up to two electrons. After the first two electrons, any additional electrons have to begin a new shell. The second shell can hold eight electrons before it becomes full. Helium is the first noble gas on the periodic table, having two protons and two electrons. Because helium's outer most shell is full, it does not react with other atoms.
By comparison, look at hydrogen and oxygen. Oxygen has eight electrons. The first two electrons occupy the first shell. The remaining six go to the second shell. This leaves the second shell with two empty spaces that can potentially be filled. Meanwhile, hydrogen has one electron, with it's valence shell having an empty space for one additional electron. Two hydrogen atoms give up their single electrons to an oxygen atom, so that all three end up with stable valence levels.
By the time an atom can fill out the second electron shell on it's own (10 total electrons) you end up with neon, the second noble gas.
Answer:
i dont know?
Explanation:
why are they?!?!?!?!
The acceleration of an object is equal to the net force exerted on the object (blank) the object's (blank).
Answer:
Divide; mass.
Explanation:
The acceleration of an object is equal to the net force exerted on the object divided the object's mass. This theory is known as Newton's second law of motion.
Force is given by the multiplication of mass and acceleration.
Mathematically, Force is;
[tex] F = ma[/tex]
Where;
F represents force.
m represents the mass of an object.
a represents acceleration.
Making acceleration (a) the subject, we have;
[tex]Acceleration (a) = \frac{F}{m}[/tex]
Therefore, the acceleration of an object is equal to the net force exerted on the object divided the object's mass.
The acceleration of an object is equal to the net force exerted on the object divided by the object's mass.
The net force applied to an item divided by its mass gives the object's acceleration.
To put it another way, the equation that connects mass (m), net force ([tex]F_{net[/tex]), and acceleration (a) is:
a = [tex]F_{net[/tex] / m
This equation is derived from Newton's second rule of motion, which states that an object's acceleration is inversely proportional to its mass and directly proportional to the net force acting on it.
Thus, it shows that an item accelerates more quickly the more net force that is applied to it, and that an object accelerates more quickly the more mass that is added to it.
For more details regarding acceleration, visit:
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why do iron and nickel form a metallic bond
