Answer: 144 g
the mol of the oxygen gas is 64/16 = 4 (mol)
we have:
2H2 + O2 => 2H2O
4 ------> 8
=> the mol of H2O is 8 mol
=> m(H2O) = 8.(2 + 16) = 8.18 = 144 (g)
Explanation:
If a train conductor is describing the speed of the train as well as the direction of the train is going to then the train conductor said to be described with the trains
Answer:
With all of that information, he's telling us the train's VELOCITY.
Explanation:
Velocity is a vector quantity made of two parts: speed and direction.
The electromagnetic spectrum has waves of varying levels of energy. Which
wave has the least energy?
Answer:
Radio waves, I believe
Explanation:
Answer:
radio yes yup yup yup yup
plz help me!!! I'm make u the brainlyest!!!! plzzzz helpppp
A Car makes a 75-mile trip South in 1 hour. For the first 30 minutes, it drove 50 mph. For the second 30 minutes, it drove 100 mph. Answer the following questions:
a. Instantaneous Velocity at minute 15:
b. Instantaneous Velocity at minute 45:
c. Average velocity of the entire trip in mph:
Answer:
B
Explanation:
Need help ASAP
Thanks+ BRAINLIST only for correct answers
4. Which of the following sets of EM radiation can harm your body cells?
a. Gamma ray, microwaves, infrared
b. Light, ultraviolet, x-ray
c. Microwaves, ultraviolet, infrared
d. Ultraviolet, x-ray, gamma ray
Answer:
a. Gamma ray, microwaves, infrared
What should be the initial potential energy of a pile driver ram so that when it strikes piles, it delivers a kinetic energy of 20 KJ?
Answer:
the initial potential energy should be 20 kJ.
Explanation:
Based on law of conservation of energy, the kinetic energy delivered by the pile driver when it strikes the piles, should be equal to the initial potential energy.
Since the final kinetic delivered is given as 20 kJ, then the initial potential energy should be 20 kJ.
Therefore, the initial potential energy should be 20 kJ.
please help! easy science! second pic is the question and possible answers (A B C or D) its one question! brainliest promised!
Answer:
Please do not take my word for this at all, but this is what I found, "When the pendulum swings back down, the potential energy is converted back into kinetic energy. At all times, the sum of potential and kinetic energy is constant." So I think the answer is B also you are anime fan too lol :DD I love hinata
Explanation:
I WILL GIVE BRAINLIEST
How could you explain that two objects of the same volume have different buoyancy in water???
HELP ITS URGENT
Answer:
Explanation:
Take for example you place two eggs in the water. One starts to sink and one remains floating. They have the same volume but the one that sinks is cracked just a little, which as soon as it hits the water, water starts to go in the egg. Then that changes the volume of the egg. (I've done this expirement before) It can also be the way you place the object in the water, or one object has been in the water longer. The buoyancy can be the way they are positioned/placed in the water. One may be more absorbant to the water as well.
I hope you understand what I am trying to say.
Calculate the resistance of an electric blanket that draws 9 A to transform 50 W of energy.
Answer:
The resistance is 0.617Ω.
Explanation:
Given that the formulas are V = I × R and P = I × V so when you substitute the V formula into P formula, you will get P = I² × R. Using this formula, you can find the resistance :
P = I² × R
50 = 9² × R
50 = 81 R
50 ÷ 81 = R
R = 0.617Ω (3sf)
What are two main types of exercise???
Answer:
Endurance exercise and Strength exercise
Explanation:
Answer:
Aerob exercise and strength exercise
Explanation:
A force of 6.0 N is applied horizontally to a 3.0 kg crate initially at rest on a horizontal frictionless surface. After the crate is pushed for 1.5 seconds, it has a velocity of 3.0 m/s. Does this support Newton's second law of motion, that force equals mass times acceleration? Explain. 
a. Yes, because the acceleration of the crate is 2.0 m/s².
b. No, because the acceleration of the crate is 2.0 m/s².
c. Yes, because the mass and the velocity of the crate are equal.
d. No, because the mass and the velocity of the crate are equal.
Answer:
a. Yes, because the acceleration of the crate is 2.0 m/s².
Explanation:
Given
[tex]Force = 6N[/tex] --- f
[tex]Mass = 3kg[/tex] --- m
[tex]Time = 1.5s[/tex] --- t
[tex]Velocity = 3.0m/s[/tex] --- v
Required
Does the system support [tex]F=ma[/tex]
Yes, it does and this is shown below
The crate is initially at rest; so:
[tex]u = 0[/tex]
Using the first equation of motion
[tex]v = u + at[/tex]
Substitute values for v, u and t
[tex]3 = 0 + a*1.5[/tex]
[tex]3 = 1.5a[/tex]
Make a the subject
[tex]a = 3/1.5[/tex]
[tex]a = 2[/tex]
Using [tex]F = ma[/tex]
Substitute values for F and m
[tex]6 = 3 * a[/tex]
Divide both sides by 3
[tex]6/3 = 3/3 * a[/tex]
[tex]2 = a[/tex]
[tex]a = 2[/tex]
In both cases:
[tex]a = 2[/tex]
Hence, option (a) is correct.
Which part of this chemical process requires energy? KOH + HBr - KBr + H20 A. Forming bonds in KOH and HBr B. Breaking bonds in KBr and H2O C. Breaking bonds in KOH and HBr D. Forming bonds in KBr and H2O
The chemical process which requires energy is breaking bond in KOH and HBr. Hence, option C is correct.
What is energy?The capacity to perform work is known as energy in physics. Potential, kinematic, thermodynamic, electromagnetic, chemical, nuclear, and other types are all possible.
As energy is transferred through one body to another, there is also heat and work. As a result, heat transfer may result in thermal energy, whereas labor done may result in mechanical power.
As per the given reaction in the question,
KOH + HBr - KBr + H20
Here, in this reaction the chemical process which requires the energy is at the time of breaking of bonds in KOH and HBr at that time the energy is required.
Therefore, it is concluded that breaking bonds in KOH and HBr i.e., option C is correct.
To know more about Energy:
https://brainly.com/question/1932868
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What does a velocity measurement include that a speed measurement does not? A: Time B:direction C:distance D: acceleration
Answer:
B. Direction
Explanation:
Speed is a scalar quantity and doesn't keep track of direction : Velocity is a vector quantity and is direction aware.
A 2.5 –g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?
Answer:
A 2.5 g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What is the initial kinetic energy of the bullet? 153.125 J Correct: Your answer is correct.Jan 8, 2020
Explanation:
what's is the kinetic energy of a .235-kg baseball thrown at 50.0m/s
Answer:
34.51
Explanation:
k=1/2mv² is the kenetic energy equation to fill is in
k=[1/2(0.235)×50]²
Do any of the atom diagrams below represent atoms of the same element?
Yes, all the atoms are the same element.
Yes, atom A and atom C are the same element.
Yes, atom A and atom B are the same element.
No, they are all different elements.
Atom A and atom C are the same element.
PLEASE HELP BRANILIEST
The earliest goalie masks used were made from______________________.
Group of answer choices
Stone
Candy
Fiberglass
Wood
Answer:
The earliest goalie masks used were made from Fiberglass.
Explanation:
Hope that helps
Have a good day
How far could you speed walk in 10 minutes? Use your speed from the 20m test to calculate the answer.
my speed is 13.63.
Answer:
Explanation:
Given parameters:
Time for speed walking = 10min
Speed = 13.63?
Unknown:
Distance you can speed walk = ?
Solution:
To solve this problem, we simply apply the velocity - time equation;
Speed = [tex]\frac{distance}{time}[/tex]
Distance = speed x time
make sure you speed and time are in the same unit
Insert the parameters and solve
You work at a retail store. Recently, paychecks have had errors and there have been many employee complaints. You have been assigned to head the team to redesign the payroll software program to solve this problem. Use the drop-down menu to organize the steps you will take in writing the problem statement. Write the new payroll software program. Clearly state the vision of how the stakeholders think things will function with the new payroll system. Ask for stakeholder input on the problem and possible solutions?1.C 2.B 3.A
Answer:
C,B,A
Explanation:
Answer:
first one C
second one B
third one A
Explanation:
i hope you have a good day ;0
what safety precautions do you have to keep in mind when playing invasion games?
Wear protective gear, such as helmets, protective pads, and other gear.
Warm up and cool down.
Know the rules of the game.
Watch out for others.
Don't play when you're injured.
Describe how sound at a concert is different from the front row and the back.
Scientists have made predictions about the universe today based on the big bang theory. Observations that match these predictions support the big bang theory. Which of the following observations have scientists made that provides evidence of the big bang?
A. Light from the moment of the big bang has been observed.
B. The percentages of hydrogen and helium match the predicted percentages.
C. Galaxies are moving toward each other as predicted by the big bang theory.
D. Many galaxies that are similar to the Milky Way have been observed.
Answer:
the answer is b
Explanation:
Answer:
b
Explanation:
I just did it on a p e x
An electrical generator creates electricity by
A) By spinning a turbine with kinetic energy
B) By using Gasoline
C) By exposing a coil of wire to a changing magnetic field
D) By Aligning the magnetic domains of the coil of wire
(b) The cabin and passengers have a total mass of 800 kg. The vertical distance between
B and C is 50 m.
Calculate the increase of gravitational potential energy of the cabin and passengers when they
move from B to C.
energy =
Answer:
392 kJ
Explanation:
Given that,
The total mass of the cabin and the passengers = 800 kg
The vertical distance between B and C is 50 m.
We need to find the increase of gravitational potential energy of the cabin and passengers when they move from B to C. It can be given by the relation as follows :
[tex]E=mgh\\\\E=800\times 9.8\times 50\\\\E=392000\ J\\\\\text{or}\\\\E=392\ kJ[/tex]
So, the increase in gravitational potential energy is 392 kJ.
I need help with this asap please!!
Answer:
9000Ns
Explanation:
Given parameters:
Mass of sled = 100kg
Net force = 150N
Time = 1min = 60s
Unknown:
Total impulse = ?
Solution:
The total impulse on the body can be derived using the expression below;
Impulse = Force x time
So;
Impulse = 150 x 60 = 9000Ns
Mass is 56.8 g and the volume is 10 mL what is the density
help ;-;
Replace the pencil with an iron nail (Doc.19 in pic)
1. does the lamp glow?
2. does an electric current flow through the lamp?
3. Does the iron nail conduct the electric current?
Answer:
all qn 1,2,3 have same answer ,. Yes,. hope it helps
HELPPPPPPP!!!!!
why are cations drawn towards cathode and anions towards anode?
Explanation:
Cations are positive and anions are negative, since opposite charged attract, the cations are drawn towards the cathode, which is the negatively charged electrode and anions are drawn towards the anode (positive electrode)
Answer:
because cations are negatively charged particles and their attracted towards a positive electrode that is anode while anions and positively charged particles and I attracted towards the negative electrode that is cathode
Explanation:
The primary job of a(n) ____
is to increase the power of a modified radio wave.
The primary job of a(n) ____
is to increase the power of a modified radio wave.
Answer:
amplifierExplanation:
Hope it helps:)
#CarryOnLearning
Answer: Amplifier
Explanation: Edge 2021
Have a great day :D
HELP PLS 100 POINTS TAKING TEST RN
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30
miles per hour. Which of the following is NOT true?
You and the car are accelerating.
Your speed is constant.
Your velocity is constant.
Your acceleration is constant.
Answer:
sorry I hate when people press your question and answer with a fake answer for points, however you said it was 100 points and it's not even close lol but it is "your speed Is constant" that is not true
Plz help 200 pts
In the movie Black Panther, Wakanda's economy focuses on the production and use of a fictional metal known as vibranium, which has amazing chemical and physical properties. If this metal actually existed, where do you think the metal would be placed in the periodic table? What would be the elemental symbol?
Answer:
We just know that the metal is called Vibranium.
to place something is the table we need to know its atomic number and its mass. so if we can get that we can ans it.
Explanation: