Answer:
46.2 moles of NaOH are required.
Explanation:
Given data:
Moles of NaOH required = ?
Moles of H₂SO₄ = 23.1 mol
Solution:
Chemical equation:
H₂SO₄ + 2NaOH → 2H₂O + Na₂SO₄
Now we will compare the moles of NaOH with H₂SO₄.
H₂SO₄ : NaOH
1 : 2
23.1 : 2×23.1 = 46.2
Thus, 46.2 moles of NaOH are required.
Which of the following may indicate that a chemical reaction has occurred?
a. release of energy as light
b. a color change
C. gas bubble formation
d. All of the above
Answer:
D, all of the above
Explanation:
Which of the following pairs of half-reactions would have a negative total
reduction potential?
A. Copper (Cu) reduced, zinc (Zn) oxidized
B. Hydrogen (H) reduced, sodium (Na) oxidized
C. Mercury (Hg) reduced, iron(II) (Fe) oxidized
D. Silver (Ag) reduced, gold (Au) oxidized
Answer: silver reduced, gold oxidized
Explanation:
Answer:
D
Explanation:
Jonah realize even though she’s crushing the cans in the amount of material in the can is unchanged which of the following describes the reaction that is taking place
a change in form or appearance of matter
Explanation: CAUSE IT STILL IS THE MATERIAL JUST IN A DIFFERENT SHAPE
Answer:
A change in form, or appearance of matter. Is your answer, can I have Brainliest? :) Have a great day! Hope it's right!
The most abundant element is
A. Sulfur
B. Oxygen
C. Silicon
D. Carbon
E. hydrogen
Answer:
E. hydrogen
Explanation:
Hydrogen is the most abundant element in the Universe.Answer:
Its E. hydrogen
Explanation:
1. How many moles of Mg are there in 9.20 x 1024 atoms of Mg?
Answer:
15.28 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{9.20 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 15.282392..[/tex]
We have the final answer as
15.28 molesHope this helps you
Compare the potential energy of two atoms chemically bonded to their potential energy when separated.
Answer:
See explanation
Explanation:
The essence of chemical bonding is in order to attain minimum energy. The minimum energy state is the most stable state of a chemical system.
As the distance of separation between atoms decreases, the potential energy of the system decreases accordingly.
An optimum distance is reached when the two atoms attain the lowest potential energy. This is designated as the bond distance of the two atoms.
Hence two atoms have lower potential energy when bonded than when separated at large distance.
When two atoms are chemically bonded they have Lower potential energies while when they are separated they have higher potential energies
The potential energies of atoms chemically bonded is directly proportional to the distance between the atoms ( i.e as the distance between atoms decrease the potential energies of the atoms decreases accordingly) and this enables chemically bonded atoms to attain a more stable state.
The lower the potential energy of bonded atoms the more stable the element/compound becomes therefore it is necessary that bonded atoms attain the least possible potential energy.
Hence we can conclude that When two atoms are chemically bonded they have Lower potential energies while when they are separated they have higher potential energies .
Learn more : https://brainly.com/question/17637022
What are some ways that scientists use to model chemical reactions?
Answer:
they identify factors that affect chemical processes then they determine the amount of substance produced or consumed then predict the amount of energy released or absorbed
The properties of matter depend on the types of atoms a substance is made of.
true of false?
true 100% i just had a quiz on this.
Convert 500 mL to L
Answer:
0.5L
Explanation:
1L = 1000 ml
0.5L
Answer: 0.5
Explanation:
* The cost of table salt and table sugar is Rs 15 per kg.
and Rs 69 per kg respectively calculate their cost per mole?
Cost per mole
Table salt : Rs 0.878
Table sugar : Rs 23.63
Further explanationGiven
Cost table salt (NaCl) = 15/kg
Cost table sugar(sucrose-C12H22O11) = 69/kg
Required
cost per mole
Solution
mol of 1 kg Table salt(NaCl ,MW= 58.5 g/mol) :
[tex]\tt mol=\dfrac{1000~g}{58.5}=17.09~mol=Rs~15\rightarrow 1~mol=Rs~0.878[/tex]
mol of 1 kg Table sugar(C12H22O11 ,MW= 342 g/mol) :
[tex]\tt mol=\dfrac{1000}{342}=2.92~mol=Rs~69\rightarrow 1~mol=Rs~23.63[/tex]
d. what happens when an iron nail is kept in copper sulphate solution?
Answer:
it changes color from blue to light green.
Explanation:
due to copper iron nail functions
Answer:
give the other person brainlieset plz
Explanation:
On a .75-meter table sits a book whose mass is .5 kilograms. How
much Potential energy does it have?
Answer:
P.E = 3.675 J
Explanation:
Given data:
Height of table = 0.75 m
Mass of book = 0.5 kg
Potential energy = ?
Solution:
Formula:
P.E = mgh
g =acceleration due to gravity = 9.8 m/s²
by putting values,
P.E = 0.5 kg× 9.8 m/s² ×0.75 m
P.E = 3.675 kgm²/s²
J = kgm²/s²
P.E = 3.675 J
Answer:
[tex]\boxed {\boxed {\sf 3.675 \ Joules}}[/tex]
Explanation:
Gravitational potential energy can be found using the following formula.
[tex]E_p=m*g*h[/tex]
Where m is the mass, g is the gravitational acceleration, and h is the height.
The mass of the book is 0.5 kilograms. The acceleration due to gravity on Earth is 9.8 m/s². The height of the book is 0.75 meters.
[tex]m= 0.5 \ kg \\g= 9.8 \ m/s^2 \\h= 0.75 \ m[/tex]
Substitute the values into the formula.
[tex]E_p=(0.5 \ kg)(9.8 \ m/s^2)(0.75 \ m)[/tex]
Multiply.
[tex]E_p=(4.9 \ kg*m/s^2)(0.75 \ m)[/tex]
1 kg*m/s²= 1 Newton[tex]E_p=(4.9 \ N)(0.75 \ m)[/tex]
[tex]E_p=3.675 \ N*m[/tex]
1 N*m= 1 Joule[tex]E_p=3.675 \ J[/tex]
The book has 3.675 Joules of gravitational potential energy.
orange juice being made from fresh oranges
O a. physical property
Ob. physical change
O c. chemical property
O d. chemical change
Good day pleases help
Nuestra alimentación ha empeorado tanto y la oferta de alimentos no saludables (ultraprocesados ricos en sal, grasas y azúcares) es tan amplia, que debemos hacer un esfuerzo en reaprender y reconocer los alimentos que benefician nuestra salud. ¿Qué alimentos debemos escoger para preparar un plato saludable?
Answer:
Nuestra alimentacion debe estar basada en alimentos ricos en vitaminas, minerales como las frutas verduras, legumbres y semillas.
Explanation:
Los alimentos ultraprocesados son altos en sodio, conservantes, y pobres en vitaminas, es por eso que deben ser evitados ya que algunos hasta se consideran hasta carcinogenos.
No se descarta los compuestos quimicos ultraprocesados ricos en grasa perjudiciales para la salud ya que fomentan la formacion de placa de ateromas.
What is the huge grouping of stars that rotate around a center of which the Sun and the solar are a part.
How many atoms of oxygen are represented in 2CaNO3?
Answer:
6 atoms of oxygen
Explanation:
Balance equation PLEASSEEE HELPPP MEEE
Answer:
2AgNO₃ + MgCl₂ ⇒ 2AgCl + Mg(NO₃)₂
Explanation:
Match both sides of the equation. practice practice
If you start with 3 moles of sodium and 3 moles of chlorine to produce sodium chloride, what is the limiting reagent?(You will need to balance
the equation first.)
Na + Cl2 -> NaCl A. They are equal B. Na C. Cl2 D. NaCl
Answer:
B. Na
Explanation:
Once balanced you get 2Na + Cl₂ ⇒ 2NaCl. Sodium is the limiting reagent because it would produce the smallest amount of the product (NaCl)–while chlorine is the excess reagent. Based off of the Na in the balanced equation, it would produce 3 moles of NaCl, and for Cl₂ it would produce an excess of 6 moles of NaCl. [It'd be wise to utilize stoichiometric factors to get a good grasp of this]
How are light bulbs made
Answer:
Explanation: The air inside the bulb is taken out and replaced with a gaseous mixture of argon and nitrogen which help ensure a longer-life for the filament. The bulb will be tested to make sure they're up to the job.
The __________ system is responsible for bringing oxygen into the lungs and releasing carbon dioxide from the body
Answer:￣ﾉﾞ(｡･∀･)ﾉﾞo(*￣▽￣*)ブ(*￣3￣)╭o(*￣▽￣*)ブ(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭•)>⌐)↖↗↘↙↜↚↯↟↝↖↔↕↙↘↙↘↘↞↴↯↚↨⇌⇋⇆⇉⇑↶⇋⇋↳¾⁷¼¼⁶⁴⁷⁰⁰⁰⁹⅕⅘⅓⅕⅓⅕⨊⨡⨔⨩⨦⨶⨼⨿⨷⨷⨻⨼⨹₴ The answer is resperitory
Explanation:
What type of energy uses turbines
with huge blades that spin when
the wind blows to generate
electricity?
Answer:
The answer is : D. Wind energy
what is a caterpillar
Answer:
ca ater pillar
Explanation:
there cute little fuzzy guys and they're amazing and beautiful
Which periodic table trend is represented by the blue arrows?
Answer:
Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.
Hello guys sorry for spamming again but I have to do this whole thing and the end of trimester for my school is today so I need to get good grades especially is science so here is the image please answer that. Thanks!!
Answer:
all you need if yo look up and say do plants grow without soil but yes they can grow without soil but they cannot grow without the necessities that soil provides.
You have 286.7g of PbO. For lab, you need 2.50M PbO. How much PbO can you make? Don't forget your units.
Answer:
0.514 L (liters)
Explanation:
I took the Quizziz, and hope this helps!An ion with 11 protons 12 neutrons and a charge of + 1 has an atomic number of
what? And how many electrons total?
Answer:
11 electrons total and 23amu
Explanation:
This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu.
What are the classifications of these compounds? Are they triglycerides?
Answer:
Yes they are triglycerides
Explanation:
Triglycerides are esters derived from glycerol and three fatty acids.
If we look at the structures closely, we will notice that the compounds are composed of glycerol and three fatty acids.
Hence the structures are triglycerides. The first structure is an unsaturated triglyceride while the second structure is a saturated triglyceride.
If you have 6.02x10^23 molecules of trisulfur monoxide, how many grams would it weigh?
Answer:
112.18 g.
Explanation:
you're using stoichiometry to find the mass of the compound S₃O.
what makes one of your cells you ?