Answer: When a fire is burning, chemical energy is turned into visible energy in the form of light and thermal energy in the form of heat.
Explanation:
How many electrons could have the following set of quantum numbers?.
Answer:
2
Explanation:
As only 2 electrons can present in an orbital, so only 2 electrons in an atom can have this set of quantum numbers.
What is similarities ALL covalent,ionic,and metallic bonds have?
Answer:
Electrostatic attraction between oppositely charged ions
Explanation:
involve the formation of an octet of electrons in their valence shells, except for hydrogen which needs a duet of electrons
True or false? Ionic compounds form regular crystals because their ions arrange themselves in a stable lattice structure.
Answer:
TRUE!!!!!!!!!!
Explanation:
Hope this helps!!! :)
A train goes a distance of 600 km in 2 hours. What is its speed?
Answer:
300km/h
Explanation:
Speed=distance/time
Speed=600/2
Speed=300km/h
This answer makes sense because if they go 300 in one hour, then 300*2 would get you 600, which is what the question states, 600km.
i will give Brainliest!!! What kind of atoms make up C12H22O11?
There are 12 Carbon atoms, 22 Hydrogen atoms and 11 Oxygen atoms.
What is the maximum number of electrons that can have the following set of quantum numbers? n = 2, ℓ = 1, mℓ = 1.
For the quantum numbers n = 2, ℓ = 1, mℓ = 1, there can be a maximum of two electrons.
What are quantum numbers?The term quantum numbers refer to the numbers that describe the position of electron in an atom.
There are four sets of quantum numbers which are;
Orbital quantum numbersPrincipal quantum numbersSpin quantum numbersMagnetic quantum numbersFor the quantum numbers n = 2, ℓ = 1, mℓ = 1, there can be a maximum of two electrons.
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Why it is important not to allow children to handle money
Answer:
Because children will buy irresponsible things wid it like candy and toys but if u give them the money SPECIFICALLY for that then its fine or they will just draw on it or rip it lol
Explanation:
have a nice day :)
Which element is not abbreviated based on an ancient name?.
Radium (Ra) is an example of a chemical element which is not abbreviated based on an ancient name.
What is a chemical element?A chemical element can be defined as a pure substance that comprise atoms with the same atomic number (number of protons) in its atomic nucleus.
The examples of a chemical element.
In Chemistry, some examples of a chemical element include the following:
Carbon (C)Iron (Fe)Sodium (Na)Radium (Ra)Generally, a chemical symbol is typically used in chemistry to abbreviate an atom of a given element or a chemical element. Also, some chemical elements are not abbreviated based on an ancient name such as Radium (Ra).
Read more on chemical elements here: https://brainly.com/question/377844
Which of the following is a possible reason that urban sprawl is common even when it has a negative impact on the environment? a. Extending outward causes more crowded conditions b. Extending outward is more economical than extending upward c. Extending outward creates less pollution d. All of the above Please select the best answer from the choices provided A B C D.
The urban sprawl is common for the economic upward. Thus, option B is correct.
Urban sprawl is defined as the growth of urban areas with the development of housing, shopping centers, etc. The development of the urban area is processed at the undeveloped land.
Why Urban sprawl is common?The urban sprawl results in the development of the urban area on the underdeveloped land, resulting in the disruption of the environment.
However, with the urban sprawl, the opportunities and the facilities for the rural people developed. The economic extension upwards with the growth.
Thus, it has been the reason for supporting urban sprawl. Hence, option B is correct.
Learn more about urban sprawl, here:
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solution of ammonia is a weak alkali.why?
The aqueous solution of ammonia is weak alkali because ammonia produces OH- ions in it's water solution. - Initially ammonia doesn't have any kind of OH- or hydroxyl ions. Due to the presence of OH- or hydroxyl ions in the solution,the aqueous solution of ammonia is considered as a weak alkali.
Hope it helps...Answer:
your answer is
The aqueous solution of ammonia is weak alkali because ammonia produces OH- ions in it's water solution. - Initially ammonia doesn't have any kind of OH- or hydroxyl ions. Due to the presence of OH- or hydroxyl ions in the solution,the aqueous solution of ammonia is considered as a weak alkali.
hope it’s helps you Buddy
Explanation:
~Zayn
If a 0.5ml air bubble is present in the tip of a Burette what percent error in 10ml 20ml and 40ml samples will result if the air bubble is dislodged during the dispensing of the samples
Live as if you were to die tomorrow. ...
“That which does not kill us makes us stronger.” ...
“Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.” ...
“We must not allow other people's limited perceptions to define us.”
What is the tundra’s permanently frozen layer of ground called?
per-ma-frost
active soil
soil frost
ground layer
Answer:
per-ma-frost
Explanation: I believe this the answer
Methane Gas (CH4) is an example of a(n) __________. *
In a certain reaction, molecules are moving faster and colliding more often as reactants turn into products. Which action is happening?
A) Heat is being passed; the reaction is exothermic.
B) Heat is being passed; the reaction is endothermic.
C) Heat is being absorbed; the reaction is endothermic.
D) Heat is being absorbed; the reaction is exothermic.
Answer:
Heat is being passed; the reaction is exothermic.
Explanation:
Answer:
heat is being passed; the reaction is exothermic
Explanation:
the molecules are moving fast because heat is being passed which means its exothermic
i took the quiz
Which of the following is a non-metal?a) sodiumb) oxygenc) irond) copper
Answer:
b)oxygen
Explanation:
all other options are metal
Answer:Copper
Explanation:
How would the 2s and 3p orbitals differ from the 1s and 2p orbitals?.
Answer:
The 2s and 3p orbitals would have more nodes than 1s and 2p orbitals.
p orbitals would have same shape, but 3p would be larger
s orbitals would have same shape, but 2s would be larger
Explanation:
i need help with this please!!
Answer:
Option no 3
Explanation:
Metallic elements aren't usually crumbled in normal air pressure and conditions.
A baby has a mass of 4kg. What is it’s weight on earth
How many atoms are in 2.00 moles of H2O
Answer:
Therefore 2 mole H2O will have 2.4088×10^24 hydrogen atoms. one mole of water contains 6.02 x 1023 molecules of water. But each molecule of water contains 2 H and 1 O atom = 3 atoms, so there are approximately 1.8 x 1024 atoms in a mole of water.
HELP ASAP WILL MARK BRAINLIEST: How many grams of aluminum can be extracted from 5000g of alumina
The grams of aluminium extracted from 5000g of alumina is 2647 grams
Chemical formula of alumina:Al₂O₃
Let's calculate the molecular mass of Al₂O₃
Al₂O₃ = 27 × 2 + 16 × 3 = 54 + 48 = 102 g/mol
Therefore,
102 g of Al₂O₃ = 54 g of aluminium
5000g of Al₂O₃ = ?
mass of aluminium produced = 5000 × 54 / 102
mass of aluminium produced = 270000 / 102
mass of aluminium produced = 2647.05882353
mass of aluminium produced = 2647 grams
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The dissolution of calcium chloride in water is given by the following equation:
CaCl2(s) + 2H20 — Ca(OH)2(aq) + 2HCl(g) + heat
->
How would an energy graph of this reaction appear?
(1 point)
The reactants would appear at a higher energy state than the products.
The reactants would appear at a lower energy state than the products,
The reactants and products would appear at a high energy state.
The reactants and products would appear at a low energy state
Answer:
The reactants would appear at a higher energy state than the products.
Have a nice day!
For the reaction represented by the equation AgNO3 + NaCl ® NaNO3 + AgCl,
how many moles of silver chloride, AgCl, is produced from 7.0 mol of silver nitrate AgNO3?
Answer:
7
Explanation:
7 mol AgCL * [tex]\frac{1 mol AgNO3}{1 mol AgCl}[/tex]
You can cancel out the "mol AgCl" to get 7 moles of AgNO3
What is the difference between molarity and molality?.
Answer:
An important distinction between molality and molarity is the difference between a solution and a solvent. Molarity is the ratio of the moles of a solute to the total liters of a solution. ... Molality, on the other hand, is the ratio of the moles of a solute to the kilograms of a solvent.
When drinking water, how soon does it reach the bladder.
Answer:
Water absorption can occur as soon as 5 minutes after ingestion and peaks around 20 minutes after ingestion.
Explanation:
8
in the respiratory system Is most affected by rib damage
a.
bronchodilatation
b.
inspiration and expiration
is most affected by rib damage
C.
humidification of the air
d.
movement of mucus from lungs
Answer:
Pneumonia: movement of mucus from lungs
Explanation:
Pneumonia is an infection that inflames your lungs' air sacs (alveoli). The air sacs may fill up with fluid or pus, causing symptoms such as a cough, fever, chills and trouble breathing.
Pls give brainlist
If 4. 00 g of NaCl react with 10. 00 g of AgNO3, what is the excess reactant? AgCl NaCl AgNO3 NaNO3.
We need balnce equation first
[tex]\\ \tt\bull\rightarrowtail NaCl+AgNO_3\longrightarrow AgCl+NaNO_3[/tex]
It's already balanced.Here Silver Nitrate is more So AgNO_3 is the excess reagent.Note:-
Excess reagent is always present in reactant side
HELP PLEASE WILL GIVE 45 points
Answer:
high melting points.
good conductors of electricity.
good conductors of heat.
high density.
malleable.
ductile.
Explanation:
Here is ur paragraph:
Metals have many interesting properties. Metals have high melting points, for example, Gold's melting point is 1948 degrees Fahrenheit. They are also good conductors of heat and electricity. They have high density and are malleable. They are also ductile. Platinum and Gold are very widely used for these reasons.
Observations After Interaction Steel Wool + Oxygen
Answer:
By placing the steel wool in a jar with plenty of oxygen and water, you start a chemical reaction. The iron and the oxygen react to form a new reddish-brown substance, called iron oxide or rust. In this experiment, the water level in the glass should rise as the oxygen inside combines with the iron in the steel wool.
Explanation:
Please help asap chemistry homework
Hope it helps.
If you have any query, feel free to ask.
What else is produced when sodium carbonate decomposes?
Na2CO3 → Na2O +
_________
Answer:
CO2
cardon dioxide is produced
