Answer and Explanation:
In an electric field generated between two electrodes there is a separation of charges: a negatively charged electrode called cathode and a positively charged electrode called anode. Ions are charged particles, so they can be positive or negative charges. Opposite charges attract each other. So, the cathode - negatively charged - attracts positively charged particles. On the other hand, the anode - positively charged - attracts negatively charged particles.
Therefore, positive ions move towards the cathode and negative ions move towards the anode.
In the following reaction, how many atoms of Sn would be produced if we start with 4.0 moles of H2? SnO2 + 2 H2 → Sn + 2 H2O
Answer:
1.02x10^24 atoms
Explanation:
The coefficients (the numbers before each susbtance) in this equation tell us that for every 2 moles of hydrogen used, there will be 1 mole of tin produced. This is a fixed ratio, which means if we use 4 moles of H2, 2 moles of tin will be produced.
One mole contains Avogadro's number of atoms (6.02 x 10^23). So two moles would contain twice as many atoms as this.
2 x 6.02x10^23 = 1.02x10^24 atoms.
:)
Answer:
1.2044 x 10^24 atoms
Explanation:
The equation of the reaction is given as;
SnO2 + 2 H2 → Sn + 2 H2O
From the reaction;
2 ml of H2 produces 1 mol of Sn
4 mol of H2 would produce x mol
2 = 1
4 = x
Solving for x;
2x = 4
x = 4 /2 = 2 mol
The relationship between mol and atoms is given as;
1 mol = 6.022 × 10 23 atoms
2 mol = x
x = 2 * 6.022 × 10^23
x = 12.044 x 10^23 = 1.2044 x 10^24 atoms
Which describes a precipitate in a chemical reaction?
a gaseous reactant that forms aqueous products
a solid reactant that forms aqueous products
a gaseous product formed from aqueous reactants
a solid product formed from aqueous reactants
Answer:
D
Explanation: A precipitation reaction is a type of chemical reaction in which two soluble salts in aqueous solution combine and one of the products is an insoluble salt called a precipitate.
Answer: D. a solid product formed from aqueous reactants
What kind of chemical reaction occurs when fossil fuels and biomass are burned? What is produced in addition to energy?
Answer:
Combustion is familiar to all of us, but many do not realize that it is essentially a chemical reaction. In the process of combustion, two ingredients (biomass and oxygen) are combined in a high temperature environment to form carbon dioxide, water vapor, and heat
Explanation:
Combustion of Fossil Fuels. Combustion is a reaction with oxygen. In the case of the combustion of fossil fuels, the combustion reaction is what we think of as a burning process. In the combustion reaction, the species reacting with the oxgyen is oxidized (because oxygen is very electronegative).
Lokesh is sawing boards to make a deck. What is the area of the deck?
12 ft
9 ftil
6 ft
8 ft
OA. 198 square feet
O B. 234 square feet
O C. 207 square feet
O D. 171 square feet
Answer:
Explanation:
171
In order for reflection to occur the waves must an object
Answer: In order for reflection to occur, the wave must “bounce off” an object
Explanation: For example if your looking in the mirror the waves are bouncing off the mirror to reflect your image
In order for reflection to occur the waves must an object bounce off.
What is reflection?The reflection of light can be described as when a ray of light approaches a smooth polished surface and the light ray bounces back. The incident light ray on the surface is reflected off the surface. The ray of light that bounces back is known as the reflected ray.
If a perpendicular is drawn on a reflecting surface known as normal. The angle of incidence and angle of reflection of light are equal to each other.
The laws of reflection tells about the reflection of incident light on reflecting surfaces, such as mirrors, smooth metal surfaces and clear water.
According to this, the incident ray, the reflected ray and the normal lie in the same plane and the angle of incidence is equal to angle of reflection of light rays.
Different types of reflection of light are regular reflection or specular reflection, Diffused reflection, and Multiple reflection.
Learn more about reflection, here:
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Conduction and Convection involve the movement of particles. Radiation does not
True or False
Answer:
False
Explanation:
Because it is false heat will always transfer so it require matter
Answer:
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Explanation:
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what does appeal mean
Answer:
as a verb it means make a serious or urgent request, typically to the public.
"police are appealing for information about the incident"
as a noun it means a serious or urgent request, typically one made to the public.
"his mother made an appeal for the return of the ring"
Explanation:
hope it helps
nonya sack of biskety
IM IN A TEST NEED HELP ASAP
When 2.00 mol of the acid react with sodium carbonate, 1.00 mol of carbon dioxide is formed.Calculate the volume of carbon dioxide formed, in cm 3 , from 8.00 g of the acid at room temperature and pressure.
good luck on ur test i wish i could help u more but im only in 7th grade :/ and i dont know that yet, so sorry again! :(
Explanation:
What is the quantity of atoms in KMnO4 ?
Answer:
Potassium permanganate has a molar mass of 158.04 g/mol. This figure is obtained by adding the individual molar masses of four oxygen atoms, one manganese atom and one potassium atom
Explanation:
How many moles of Mg3(PO4)2 are in 350.00 grams of Mg3(PO4)2?
Answer:
1.3 moles/ 1.33150727 moles
Explanation:
350g x 1 mol/262.86g = 1.3 moles
The molar mass of Mg3(PO4)2 is 262.855 g/mol
Atomic weight of the parts:
Mg 24.3050 x 3 = 72.92
P 30.973762 x2 = 61.95
O 15.9994 x8 = 127.995
There are 262.855 grams in one mole, so
350.00 g x (262.855g/1 mole) = 1.33 moles Mg3(PO4)2
i still need a bit of help.
When placed in a container at room temperature, which substance has a definite volume but takes the shape of the container
Answer: anything that is a liquid
what is the most important part of an Atom? Why?
Answer:
I would say proton and electron are the two most important subatomic particles in an atom
Explanation:
The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Answer:
I would say proton and electron are the two most important subatomic particles in an atom. The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Explanation:
How many kg of salt would you need to add to make 3 dm3 of a 600 g/dm3 salt solution?
Answer:
.
Explanation:
6. How many molecules are in 2.7 moles of carbon dioxide
Answer:
2.7×6.022×10^23
=16.594×10^23 moleclules
Explanation:
number of mol= 2.7
1 mol of any element=6.022×10^23
therefote 2.7 mol =2.7×6.022×10^23
=16.594×10^23
How do I write a Major Electron Level Notation in the ground state??
How many particles are in 3.4 moles of HCl?
Answer:
The volume is 77 L.
Explanation:
where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvins.
The current STP temperature is 0∘C or 273.15 K (used for gas laws), and the pressure is 105Pa, which most people write as 100 kPa (both pressures are equal).
TELLURIUM ELECTRONS GAINED OR LOST?
Answer:
Gains
Explanation:
An atom of Tellurium gives off energy when it gains an electron to form an ion of Tellurium.
what is the orbital diagram for manganese?
Explanation:
Oxidation States. +2,3,4,6,7
Electrons Per Shell 2 8 15
Electron Configuration [Ar] 4s2 3d5
1s2 2s2 2p6 3s2 3p6 4s2 3d5
Boreal forests are characterized by _______ trees. A. Creosote b. Eucalyptus c. Coniferous d. Deciduous Please select the best answer from the choices provided A B C
Answer:
c
Explanation:
coniferous trees, Tianga also called Boreal forest biome (major life zone).
hope it's perfect.
Answer: C is correct.
How should the group 1 metals be stored in the lab? Explain.
Answer:
in oil so they do not react with oxygen
Explanation:
Linda used 3 2/3 gallons of gas on Friday and 2 3/5 gallons of gas on Saturday. How many more gallons of gas did she use on Friday?
Explanation:
First:
we can start off by turning the fractions into decimals
so 2/3=0.66
and 3/5=0.60
and we add the whole number
3.66
- 2.60
which leaves you with 1.06
all that's left is turning it into a fraction
Describe the result of your procedure with both the coin and the nail. Include the reverse procedure you did with the coin
Answer:
The result of the procedure with the nail ended up going through reduction while the copper strip went through oxidation. The copper strip is the anode and the nail is the cathode. The anode is the + and the cathode is the - . Both the copper strip and the anode are placed in a tank filled with electrolyte solution. The direction of the flow goes from the positive to the negative (anode to the cathode).
Explanation:
I was doing the assignment too, hope this helps :)
The result of the procedure with respect to the coin and nail should be explained below.
What is result of the given procedure?Here the nail should be ended up through the decrease while on the other hand, the copper strip should be went through oxidation.
Here the copper strip should be considered as anode and nail should be considered as the cathode. Here the anode should be + while the cathode should be -.
Both should be placed in the tank that should be filled with the electrolyte solution.
Learn more about procedure here: https://brainly.com/question/21522463
Convert 154 kPa to atmospheres
Answer:
1.51986 atm
Explanation:
You can also search "154 kPa to atm" and a converter will appear
Write a balanced symbol equation for the incomplete combustion of hexane (C6H14) to produce soot.
Answer:
I77
Explanation:
Newton's 2nd Law of Motion states that the "acceleration" of an object depends on what 2 things? i need help fast plz 10 points
Answer:
Speed and velocity
Explanation:
What part of the isotope notation help you determine the number of electrons within an isotope?
Describe how differences in temperatures cause the convection process in oceans.
Answer:
The higher the temperature the more water evaporates and that affects the convection process
Explanation:
please help me someone ASAP!!!!
Answer:
Explanation:
g