Answer:
Mg(s) | Mg2 + (aq) Au + (aq) | Au(s)
Explanation:
The standard cell notation of a galvanic cell made with magnesium (Mg) and gold (Au) Mg(s) | Mg² + (aq) Au + (aq) | Au(s).
Thus, The cathode is the location of reduction, while the anode is the location of oxidation. The identity of the electrodes in a real cell depends on the direction that the net cell reaction is taking place.
If, during spontaneous operation, electrons move from the left electrode to the right electrode (as shown in the cell notation above), the right electrode's potential will be higher than the left electrode's, and the cell potential will be positive.
The direction of "conventional current flow" goes from positive to negative, which is the reverse of how electrons move. This means that a galvanometer installed in the external circuit would show a positive reading if the electrons are flowing from the left electrode to the right.
Thus, The standard cell notation of a galvanic cell made with magnesium (Mg) and gold (Au) Mg(s) | Mg² (aq) Au + (aq) | Au(s).
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a night when the temperature is 22°C
Answer:
what is the question? :)
!please help me if u can asap!ty!
1. How many moles of potassium are present in 4.23 x 10^25 potassium atoms? (show solution)
Answer:
70.27 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{4.23 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 70.265780...[/tex]
We have the final answer as
70.27 molesHope this helps you
Which characteristic describes the troposphere?
PLS HELP
Answer:
hope it helps..
Explanation:
The troposphere forms the lowest level of the Earth's atmosphere, extending down to the surface of the Earth. This layer also features the heaviest weight of all Earth atmosphere layers, comprising approximately 75 percent of the total atmospheric weight. The troposphere varies in thickness and height around the world.
Gases are measured in different units. Which of the following measurements of pressure are equal? Select all that apply.
101.325 kPa
101,325 Pa
1 atm
10 kPa
1,000 Pa
Explanation:
Pressure of a gas is the combined force with which the molecules bombard a unit area of the wall of the container.
1 atm = 760mmHg
= 760torr
= 101325Pa
= 101325Nm⁻²
1mmHg = 1torr
1Pa = 1Nm⁻²
101.325 kPa and 101,325 Pa are the same
1000Pa = 1kPa
101,325 Pa and 1 atm
1atm and 101.325 kPa
Which is the correct formulae for ammonia
Answer:
NH3
Explanation:
There are______sulfur atoms and________hydrogen atoms in 100 molecules of C4H4S2.
Round to the one's place.
Answer:
200 sulphur atoms
400 H atoms
What does each row (across) have in common?
What is the relationship between a chemical equation and a chemical reaction? What are reactants and products in a chemical equation?
Answer:
A chemical reaction occurs when reactants are converted into products. A chemical equation is a representation of a chemical reaction using chemical symbols. The chemical equation also indicates the physical state of the reactants and products. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation: because UwU
A chemical equation is an expression that gives the identities and quantities of a chemical reaction. A chemical equation shows the reactants on the left side and the products on the right which are separated by an arrow.
What is the chemical equation?A chemical equation is the representation of a chemical reaction in terms of symbols of the substances. A chemical equation consists of reactants participating in the reaction, formed products, and an arrow showing the direction of the chemical reaction.
The equation in which the number of atoms of substances is equal on either side of the equation is called a balanced chemical equation.
The law of conservation of mass follows by a balancing of a chemical equation. According to this law, in a chemical reaction, the mass can neither be created nor destroyed.
By obeying this law, the total mass of the elements present on the reactant side should be equal to the total mass of elements present on the product side in a balanced chemical equation.
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Using the balanced equation given below, calculate the number of moles of KCIO3 that should be reacted to produce 5.50 moles of KCI. ___ moles KCIO3
*your answer should be written as X.XX
2KCIO3 —> 2KCI + 3O2
(Please answer asap!)
Answer:
5.50 mil KCI * 2 mol KCIO3 / 2 mil KCI
I don’t know the answer, but my teacher gave me the steps to solve it...
Explanation:
red light has a longer _____ than violet light
Answer:
wavelength
n
n
n
n
n
n
n
in
n
Answer: wavelength:)
Explanation:
You have been asked to draw a Bohr model of the element carbon. How would you arrange the dots that represent electrons?
Answer:
You have been asked to draw a Bohr model of the element carbon. How would you arrange the dots that represent electrons? They would be embedded in a solid core. They would be in rings around the nucleus
For dessert, she prepares to bake a delicious apple pie. During one of the steps, she
notices an example of a chemical change. Which one is it?
O heating sugar to make caramel
softening butter
O folding a sheet of aluminum foil
dicing an apple
Answer:
heating the sugar
Explanation:
Answer:
softening butter...
Explanation:
that sounds the best because the butter be melting
Which number is always increasing throughout your organized table?
Answer:The number of Protons
Explanation:
As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, what was most likely occurring inside the test tube?
The two substances underwent a physical change
The two substances were melting
A new substance was forming
A change in the mass of the two substances
Next
Previous
9:15 AM
11/18/2020
RI
(hp
Answer:
A new substance was forming
Explanation:
Two types of changes are undergone by substances involved in a reaction. They are physical changes and chemical changes. Physical changes are those changes that does not involve the synthesis of a new product. On the other hand, CHEMICAL CHANGES alters the chemical composition of the substances involved, and hence, new substances are formed.
Chemical changes are usually characterized by change of temperature, color change, evolution of a gas etc. According to this question, Mia mixed two substances in a test tube and noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, a CHEMICAL CHANGE, LEADING TO THE FORMATION OF NEW SUBSTANCE, HAS OCCURRED.
On Earth what are two ways in which gamma rays are produced
Answer:
On Earth, gamma waves are generated by nuclear explosions, lightning, and the less dramatic activity of radioactive decay.
the sun provides the earth with
Answer:
heat and light
Explanation:
Answer:
Sunlight, and weather
Explanation:
Pls mark brainliest if this helps
35 POINTS!!!!
Four forces are exerted on an object as shown below: A square is shown with an arrow pointing up labeled 3 N, an arrow pointing right labeled 2 N, an arrow pointing down labeled 4 N and an arrow pointing left labeled 2 N In which direction will the object move? Up Down Left Right
Answer: Down
Explanation: There is more force pulling on the object
The atomic number of an element is 11. What is the likely arrangement of the valence and core electrons in a neutral atom of this element?
Answer:
The correct answer is 10 core electrons and one valence electron.
Explanation:
The electrons in an atom, which are not valence and do not take part in chemical bonding are known as core electrons. The core electrons and the nucleus of an atom produces the atomic core. These core electrons are held tightly with the nucleus. On the other hand, the outer shell electrons, which are associated with an atom and take part in the generation of a chemical bond is the outer shell is open are known as valence electrons.
In the given question, the atomic number of an element is 11, thus, the electronic configuration will be,
1S² 2S² 2P⁶ 3S¹
Hence, there is only one valence electron and 10 core electrons.
How does understanding chemistry help us in the real world?
O A. It helps us know right from wrong.
O B. It helps us make informed decisions.
O C. It helps us understand scientists.
O D. It keeps us from doing dangerous things.
Answer:
D
Explanation:
It indeed does keep us from doing dangerous things, considering the fact that chemistry is done everywhere.
Answer:B
Explanation: I just took the quiz
what is the difference between a crescent moon and a gibbous moon?
Answer:
A crescent moon is any time less than half the moon is lit by the sun. A crescent moon is going from the third to first quarter. A gibbous moon is any time more than half the moon is lit by the sun.
Explanation:
Helppp I have no clue which one :)
Answer:
b
Explanation:
Is water wet? A. yes B.no C.Idk
Answer:
C
Explanation:
when in doubt pick C...
PLEASE HELPP!!! WITH ALLL
Answer:
i dont think anybody is going to be able to do all of these lol
Explanation:
Which soil develops in the wettest climate?
Answer:
Prairie
Explanation:
because it grows in the same type of climate, its amount of humus. sorry if its wrong I am not good with chem but i hope its right :)
Which of the following electrolytes would you use to electroplate silver (Ag)
on iron (Fe)?
A. CuCl2
B. FeSO4
C. Zn(CIO3)2
D. AgNO3
Answer:
D. AgNO3
Explanation:
a-p-e-x
The correct answer is D or AgNO3.
Sort the metric system prefixes into the correct order, smallest to largest.
deci-
centi-
deca-
hecto-
milli-
kilo-
Answer:
mili
hecto
deci
deca
centi
kilo
Explanation:
Answer:
milli-
centi-
deci-
deca-
hecto-
kilo-
CaCO3 Calcium oxide and carbon dioxide
Answer:
Explanation:Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room ...
Can someone please help me on this ty!!
Answer:
It would move towards the magnet or towards the opposite direction of the object.
Answer:
Gravity as well as electrostatic and magnetic attraction and repulsion provide real life examples of forces being exerted by one object on another without them being in contact with each other.
Explanation:
explain why the troposphere has a larger total mass in the stratosphere even though the stratosphere so much bigger
Answer:
The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water.
Explanation:
Why is human waste hazardous when it enters the water system? for London and Ancient Rome?
I will mark as brainliest