Answer:
hope it helps explain how to do it
Explanation:
Ohms Law and Power
To find the Voltage, ( V ) [ V = I x R ] V (volts) = I (amps) x R (Ω)
To find the Current, ( I ) [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)
To find the Resistance, ( R ) [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)
To find the Power (P) [ P = V x I ] P (watts) = V (volts) x I (amps)
To students of electronics, Ohm's Law (E = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists. When spelled out, it means voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.
The resistor's current I in amps (A) is equal to the resistor's voltage V in volts (V) divided by the resistance R in ohms (Ω): V is the voltage drop of the resistor, measured in Volts (V). In some cases Ohm's law uses the letter E to represent voltage. E denotes electromotive force.
The equilibrium constant kc of the reaction H2+I2 produces HI is 54.3at430°C. Starting with 6.0moles,of HI moles of HI in 1.0dm^3 reaction vessel, calculate th5 concentration of H2,I2 and HI at equilibrium
Answer:
[H2] = [I2] = 0.64M; [HI] = 4.72M
Explanation:
Based on the reaction:
H2 + I2 ⇄ 2HI
The K is defined as:
k = 54.3 = [HI]² / [H2] [I2]
Where [] is molar concentration of each reactant at equilibrium
As the initial concentration of HI is 6mol/dm^3 = 6M the equilibrium concentration of each reactant is:
[H2] = X
[I2] = X
[HI] = 6 - 2X
Where X is reaction coordinate
Replacing:
54.3 = [6-2X]² / [X] [X]
54.3X² = 4X² - 24X + 36
0 = -50.3X² - 24X + 36
Solving for X:
X = -1.12. False solution, produce negative concentrations
X = 0.64M. Right solution
Replacing:
[H2] = 0.64M
[I2] = 0.64M
[HI] = 6 - 2*0.64M = 4.72M
Equilibrium concentrations are:
[H2] = [I2] = 0.64M; [HI] = 4.72MCan somebody plz help answer these true or false questions correctly (only the ones you know that are right)
Thanks :3
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST..promise! :DDDD
Explanation:
1.False
2.False
3.True
4.True
5.False
what the difference between a sodium atom (Na) and a sodium ion (Nal+)
Answer:
So a sodium atom has the electronic configuration 2,8,1 meaning it has 1 electron on its outer shell. It has a neutral charge since the number of electrons is equal to the number of protons.
A sodium ion is one that has lost the electron on its valence shell. The electronic configuration is 2,8 and it has a positive charge because it has more protons than electrons.
Answer:
[tex]\boxed {\boxed {\sf Number \ of \ electrons \ and \ net \ charge}}[/tex]
Explanation:
Remember that protons have a positive charge of +1 and electrons have a negative charge of -1. Atoms have protons and electrons.
A sodium atom has the electron configuration of 2-8-1. It has 11 electrons and its atomic number (number of protons) is also 11. This means it is a neutral atom because the charges of the electrons (-11) and protons (+11) balance each other out.
However, a sodium ion is different. It loses the 1 valence electron, so it only has 10 electrons. It still has the same atomic number of 11.
It is a not a neutral atom because the charges of the electrons (-10) and protons (+11) do not balance out. It has more protons and a net positive charge of +1. It is a cation or a positively charged ion.
How many atoms are in 35g of water?
Explanation:
nH2O=35/18
xH2O=35/18x6.02x10 powered by 23
so, the answer is
[tex]11.70556 \times {10}^{23} [/tex]
im sry if im wrong
1. If you have a sample of gas at a pressure of 16 atm, what will the pressure be if the volume is halved?
2. If you have a sample of gas at a pressure of 5.5 atm, what will the pressure be if the volume is tripled?
Answer:
1. The pressure will be 32 atm, twice the initial pressure.
2. The pressure will be 1.83 atm, one third of the initial pressure.
Explanation:
Boyle's law is one of the gas laws that relates the volume and pressure of a certain quantity of gas kept at a constant temperature.
This law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure." This means that if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases.
Boyle's law is expressed mathematically as:
Pressure * Volume = constant
or P * V = k
Ahora es posible suponer que tienes un cierto volumen de gas V1 que se encuentra a una presión P1 al comienzo del experimento. Si varias el volumen de gas hasta un nuevo valor V2, entonces la presión cambiará a P2, y se cumplirá:
P1*V1=P2*V2
1. In this case:
P1= 16 atmV1P2= ?V2= V1÷2= [tex]\frac{V1}{2}[/tex] because the volume is halved.So:
16 atm*V1= P2* [tex]\frac{V1}{2}[/tex]
Solving:
[tex]\frac{16 atm*V1*2}{V1}[/tex]=P2
16 atm*2= P2
32 atm= P2
The pressure will be 32 atm, twice the initial pressure.
2. Now
P1= 5.5 atmV1P2= ?V2= V1*3 because the volume is tripled.So:
5.5 atm*V1= P2* V1*3
Solving:
[tex]\frac{5.5 atm*V1}{3*V1}[/tex]=P2
[tex]\frac{5.5 atm}{3}[/tex]= P2
1.83 atm= P2
The pressure will be 1.83 atm, one third of the initial pressure.
The pressure of a sample of gas is 3.6 atm at 33°C. What is the pressure of this sample at 14°C?
no links no photos just say a b c d d if u think that right plsssssssssssssssssssssssssssssssssssssssssss
Answer:
A,C
Explanation:
How a non-polar molecule can ve madre of polar bonds?
Answer:
Explanation:
i cant understand the complete question, can you reword it and ill answer
To balance an equation, you need to write numbers called (BLANK) in front of the molecule or compound. DO NOT CHANGE THE SUBSCRIPTS!
Answer:
Coefficients
In the article "A Sea of Garbage" what message is each cartoon trying to convey to readers? Do they succeed?
Answer:
yes in the article I see of garbage what's messages each carton trying to convey to your readers with a success obviously they do suck said they succeed because like that's really great day socks said is your garbage is like a pool of garbage work garbage are gathered together they are together a you get one talking about you know when cabbage and together they make efficient use of them okay I mean garbage garbage garbage garbage so I don't know I don't know I don't know I don't know I don't know but it's really is regret it regret it was someone couldn't wish for our young people pick them up and see if garbage and it's really not making sense cuz when you see a sea of garbage that means there's water in there and people pull up garbage in be like water pollution or something but I'm actually not really like sure but I have a slight idea of like what we talking about here right now and it's greatin the reaction to prepare chlorine gas,4.35g of manganese dioxide (MnO2) reacted with concentrated hydrochloric acid (HCI) according to the following equation:
MnO2 + 4HCI = MnCL2 + 2H2O + Cl2
i) how many moles of manganese dioxide were there in the 4.35 g sample?
ii) how many moles of hydrochloric acid were required to reacy with 4.35g of manganese dioxide.
iii) Calculate the maximum number of water molecules that could be produced.
iv) how many atoms of hydrigen did this number of water molecules contain?
Answer:
mncL2 is the water molecule
how many grams will be needed
If you know that a star is large and red, what else is probably true about it?
O It is a white dwarf.
O It is warmer and brighter than the Sun
O It is cooler and dimmer than the Sun.
O It is cooler and brighter than the Sun.
Answer:
it is cooler and dimmer remember this red stars are old stars near their death
sample equal to the atomic mass of an element in grams contains
________ atoms. This amount of matter is called _________ .
Answer:
Sample equal to the atomic mass of an element in grams contains 6.02214179 × 10²³ atoms. This amount of matter is called a mole
Explanation:
Experimentally, it has been determined that 1 mole of any substance contains 6.02214179 × 10²³ elementary entities. The number of elementary entities in the mole is known as Avogadro's number, [tex]N_A[/tex], or the Avogadro's constant and the unit of the constant is per mole
The molar mass of a compound or an element is the mass of 1 mole of the compound or the element given in grams
Similarly, the gram atomic mass is the mass in grams of 1 mole of the atoms of the element that contains one Avogadro's number of atoms
Therefore, we have;
The number of atoms in a sample equal to the atomic mass of an element in grams = 6.02214179 × 10²³ atoms
The name given to the amount of matter containing equivalent to 6.02214179 × 10²³ elementary particles = A mole.
Calculate the pH of a 0.09 M solution of HBr
3. Most tornadoes happen in the
(6 Points)
Midwest
Northeast
Southwest
Mideast
What is the biggest grass in the world
Answer:
bamboo is the biggest/tallest grass in the world
Answer:
Giant Bamboo
Explanation:
Giant bamboo, which can grow up to 151 feet tall, is the largest variety of grass.
The weather is getting much warmer after a cold winter. What is a common physical
response with certain mammals?
Mammals will grow bigger in the heat.
Mammals will shed much of their fur or hair to help them cool off and maintain
their body temperature.
Mammals will move closer to water and beaches to stay cool.
Mammals will depend on other animals or humans to help keep them cool.
Mammals will shed much of their fur or hair to help them cool off and maintain their body temperature.
Answer:
the answer is B
Explanation:
Producers are generally found at the beginning of a food chain. Which
statement best explains why this is true? *
1. Producers are usually smaller in size than consumers.
2. Producers do not rely on other organisms for food.
3. There are always more consumers than producers in food chains.
Explanation:
Second answer is the correct one.
some one please help me
Answer:
C.4
Explanation:
For Kw, the product of [H3O+] and [OH-] is ___________.
1 x 10-14
1 x 107
1 x 10-1
1
Answer:
Kw = 1×10⁻¹⁴
Explanation:
The product between the [H₃O⁺] . [OH⁻] talks about the
autoionization of water.
2H₂O ⇄ H₃O⁺ . OH⁻ Kw
This is an equilibrium of 2 molecules of water that produces 1 mol of hydronium and 1 mol of hydroxides.
In order to determine pH and pOH, parameters to indicate acidic or basic solutions we know:
- log [H₃O⁺] = pH
- log [OH⁻] = pOH
When [H₃O⁺] or [OH⁻] = 1×10⁻⁷ , pH or pOH = 7 (Neutral solutions)
So if we see the equation above, we have an equilibrium.
In order to determine Kw, we need [H₃O⁺] . [OH⁻]
As [H₃O⁺] and [OH⁻] = 1×10⁻⁷ , Kw = 1×10⁻¹⁴
The product of [H₃O⁺] and [OH⁻] is 1 × 10⁻¹⁴. The correct option is the first option - 1 x 10-14
The ionization constant of water, Kw, is the product of [H₃O⁺] and [OH⁻]
That is,
Kw = [H₃O⁺][OH⁻]
In pure water, [H₃O⁺] = [OH⁻] = 1 × 10⁻⁷
∴ Kw = [H₃O⁺][OH⁻] = 1 × 10⁻⁷ × 1 × 10⁻⁷
Kw = [H₃O⁺][OH⁻] = 1 × 10⁻¹⁴
Hence, the product of [H₃O⁺] and [OH⁻] is 1 × 10⁻¹⁴. The correct option is the first option - 1 x 10-14
Learn more here: https://brainly.com/question/14054598
Which type of molecule is shown below?
• A. Alkyne
• B. Aromatic
• C. Alkene
O D. Alkane
What physical structure has spines that protect the plant from predators?
Flower
Pistil
Outer covering
Reproductive organs
Answer:
flower hope this helps and have a nice day too!
Explanation:
got a 100 percent on a test.
Answer:
flower
Explanation:
In the equation, CH4+2O2 -> CO2 +2H2O , how many moles of H2O will be produced if 6.8 moles of O2 reacts completely with CH4?
Answer:
[tex]6.8 molH_2O[/tex]
Explanation:
Hello there!
In this case, for this balanced chemical reaction about the combustion of methane, it is possible for us to inspect the 2:2 mole ratio of water to oxygen as given for their coefficients in the balanced chemical reaction.
In such a wat, given 6.8 moles of oxygen, we can easily obtain the produced moles of water by applying the aforementioned mole ratio as shown below:
[tex]6.8molO_2*\frac{2molH_2O}{2molO_2}\\\\6.8 molH_2O[/tex]
Best regards!
Which of these is an example of a monotreme, a mammal that lays eggs?
1. wombat
2. platypus
3. opossum
4. whale
Answer: it is the 4th option in there
Explanation:
Answer:
It platypus
Explanation:
The Platypus lays eggs
Unsaturated, saturated, or supersaturated?
Answer:
supersaturated
Explanation:
At the same temperature and pressure, 15L of CO2 gas has the same amount of molecules as what volume of N2 gas?
Answer: 15 L of [tex]N_2[/tex] gas will have same numer of molecules as 15L of [tex]CO_2[/tex] gas at the same temperature and pressure,
Explanation:
According to avogadro's law, equal moles of gases occupy equal volume at same conditions of temperature and pressure.
[tex]\text{Number of moles}=\frac{\text{Given volume}}{\text{Molar volume}}[/tex]
[tex]\text{Number of moles of} CO_2=\frac{15L}{22.4L/mol}=0.67mol[/tex]
[tex]1 mole of CO_2[/tex] contains=[tex]6.022\times 10^{23}[/tex] molecules of [tex]CO_2[/tex]
Thus 0.67 moles of [tex]CO_2[/tex] contains=[tex]\frac{6.022\times 10^{23}}{1}\times 0.67=4.03\times 10^{23}[/tex] molecules
Now molecules of [tex]N_2[/tex] = molecules of [tex]CO_2[/tex] = [tex]4.03\times 10^{23}[/tex]
[tex]6.023\times 10^{23}[/tex] molecules of [tex]N_2[/tex] = 22.4 L
Now [tex]4.03\times 10^{23}[/tex] molecules of [tex]N_2[/tex] = [tex]\frac{22.4}{6.023\times 10^{23}}\times 4.03\times 10^{23}=15L[/tex]
In the image below, what is the name of the unstable molecule formed during the collision of A2 and B2?
A. Product
B. Activated complex
C. Reactant
D. Diatomic molecule
Answer:
ig activated complex coz reactants were diaatomic molecules and they were stable initially later on we collided them so they broke into activated complex and they were highly unstable so that they bonded again with another ion!!!! so according to me B is correct OPTION!!
The name of the unstable molecule formed during the collision of A2 and B2 from the image above is called the activated complex
Option B
The activated complex of molecular substance in a chemical reaction is refers to that state of particles that is in between the reactants and products.
In general, an activated complex is an unstable arrangement of molecules during reaction of substances
What is a molecule?A molecule can be defined as the smallest particle of a substance which can normally exist alone and still retain the properties of the substance
Learn more about molecules:
https://brainly.com/question/24411600
Write word equation of carbon burns in oxygen
Answer:
Word equation carbon + oxygen → carbon dioxide
Chemical equation C + O2 → CO2
2KCIO.
2KOI
30,
2
How many moles of potassium Chlorate are needed to produce 15.0 moles of oxygen
Answer:
10 moles of potassium Chlorate are required to produce 15 mole of oxygen
Explanation:
The balanced chemical equation is
2KClO3(s)→2KCl(s)+3O2(g)
2 moles of potassium Chlorate produce 3 moles of oxygen
Number of moles of potassium Chlorate required to produce 1 mole of oxygen [tex]= \frac{2}{3}[/tex]
Number of moles of potassium Chlorate required to produce 15 mole of oxygen
[tex]= \frac{2}{3} * 15\\= 10[/tex]
10 moles of potassium Chlorate are required to produce 15 mole of oxygen