There are b) 3.010 * 10 ^ 24 molecules in 5 moles of O2
What is mole ?
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilograms of carbon 12 .
Number of moles = 5 moles
Number of molecules = ?
Avogadro's number = 6.022 * 10^23
Number of molecules in 5 moles of O2= number of moles * Avogadro's number
= 5 * 6.022 * 10^23
= 30. 10* 10 ^23 = 3.011 * 10 ^ 24 molecules
There are b) 3.010 * 10 ^ 24 molecules in 5 moles of O2
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What is this? Plz I need help...
Answer:
the time it takes for one complete back and forth swing
Explanation:
the Mark's is showing you the time it swings back and forth
to lift
With a pulley system, you use more rope (distance), but need less (blank) to lift
the load
Ok so it is working ok!
Which of these are part of the electromagnetic spectrum?
Question options:
gamma rays
visible light
microwaves
sound waves
radio waves
Answer: A, C, E
Explanation:
Gamma rays, Microwaves, and Radio waves
Describe how Newton's 1st Law of Motion is used on a daily basis at school.
If e is the electric field near an infinite sheet of charge and E is electric field between two similarly charged parallel plates then what will be the relation
Answer:
* the two plates of the same sign E = 0
* the two plates of different sign E/e = 2
Explanation:
In this exercise, the relationship between the field created by a plate and two infinite plates is asked.
The electric field created by each plate has the value of "e", which is related to the charge on the electric plate.
e = [tex]\frac{ \sigma }{2 \epsilon_o}[/tex]
If the plate is negative the electric field is directed towards the plate and if the plate is positive the electric field is directed out of the plate.
The test charge is always positive.
When we have two plates, we have several possibilities
* the two plates of the same sign
therefore the resulting electric field on the test charge is
E_total = e - e
E = 0
* the two plates of different sign
E_total = e + e
E = 2 e
the relationship between the two fields is
E/e = 2
What will be the change of velocity of a 50kg object if a force of 2,000N
is applied to it for 0.010 seconds?
Answer:
0.4m/s
Explanation:
[tex]F = ma[/tex] where F= force, m= mass, and a=acceleration
we also know that,
a = Δv / t where Δv = change in velocity and t = time
thus F = m ( Δv / t)
[tex]2000=50(\frac{v}{0.01})[/tex]
[tex]\frac{2000}{5000} = v[/tex]
0.4m/s = Δv
The thermal transfer of energy through a copper rod involves electrons. A second process is also involved.
Answer:
hello your question is incomplete attached below is the complete question
answer : Conduction, Lattice vibration ( B )
Explanation:
The thermal transfer of energy occurs in a solid like a copper rod following two process therefore the second process and method are
Lattice vibration and conduction
Lattice vibration is the movement/oscillation of atoms in a solid and this is caused by the change/increase in temperature applied to the solid and these vibrations will lead to the thermal transfer of energy via conduction since the atoms are bounded together .
Which of the following would be considered an endothermic process?
A. Fireworks exploding
B. Water freezing into ice
C. Steam condensing from a gas to a liquid
D. Water boiling
_______ is the process which causes magma to form.
Answer:
flux melting
Explanation:
Flux melting is the process that causes magma to form. Flux melting happens when water or carbon dioxide exists added to rock.
What is meant by Flux melting?When rock is exposed to water or carbon dioxide, flux melting occurs. The rock melts at lower temperatures as a result of these substances. This causes magma to form where it had a solid structure before. Around subduction zones, flux melting also happens, much like heat transfer.
Flux melting happens in igneous petrology and volcanology when water and other volatile substances are added to hot solid rock, depressing the solidus. Flux is a material, such as salt, that produces a mixture with a metal oxide that has a low melting point (liquidus) in engineering and metallurgy.
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GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 25pts-
Answer:
c
Explanation:
heat is thermal energy transferred from a hotter system while temperature is a measure of the average kinetic energy of atoms or molecules in the system
Calculate the weight of a 2.3 kg squirrel
Answer:
Lemme think rq
*inserts writing noises*
*insert intese thinking*
*insert big brain moment*
Well the weight IS 2.3 kg so I think the weight of a squirrel is 2.3 kg
Name two things that Arjun and Diya did to get accurate measurements of the angles in their experiment
Answer:
i dont know them
Explanation:
A bucket of water is pushed from left to
right with increasing speed across a horizontal
surface. Consider the pressure at two points
lat the same level in the water.
Answer:
It is higher at the point on the left
Explanation:
A scientist is designing a device that will mimic Earth's atmosphere by
blocking high-energy waves from the Sun. Pick three high-energy waves
that the device should be able to block?
Answer:
1. Ultraviolet light (UV)
2. X-rays
3. Gamma-rays
Explanation:
Though there are different types of energy or electromagnetic waves with varying wavelengths, including the likes of Gamma X-rays, ultraviolet light, visible light, infrared radiation, and microwave radiation.
What is more certain is that the atmosphere blocked the high-energy waves from getting to the earth surface or biosphere such as Ultraviolet light (UV), X-rays and Gamma-rays
I REALLY NEED HELP!!
The velocity of a car increases from +4.0 m/s to +16.0 m/s
in a time period of 4.0 s. What was the average
acceleration?
Answer:
Explanation:
Although we do have an equation for this in terms of one-dimensional motion, it's easy enough just to use the mathematical definition of acceleration:
[tex]a=\frac{v_f-v_0}{t}[/tex] which says, in words, the acceleration of an object is equal to the objects final velocity minus its initial velocity, divided by the change in time. Since everything is given in m and s, our answer will be in m/s/s:
[tex]a=\frac{16.0-4.0}{4.0}[/tex] and
[tex]a=\frac{12.0}{4.0}[/tex] so
a = 3.0 m/s/s
What is Heat engine?
Answer:
An engine made of heat!
Okay actual answer, A heat engine is a mechanical energy converter that transforms heat or thermal energy to mechanical energy.
If the specific heat of iron = 0.46J C, how much heat is needed to warm 50 g of iron from 20C to 100C
Answer:
1840 J
Explanation:
From the question given above, the following data were obtained:
Specific heat capacity (C) = 0.46 J/gºC
Mass (M) = 50 g
Initial temperature (T₁) = 20 °C
Final temperature (T₂) = 100 °C
Heat (Q) required =?
Next, we shall determine the change in the temperature. This can be obtained as follow:
Initial temperature (T₁) = 20 °C
Final temperature (T₂) = 100 °C
Change in temperature (ΔT) =?
ΔT = T₂ – T₁
ΔT = 100 – 20
ΔT = 80 °C
Finally, we shall determine the heat required. This can be obtained as follow:
Specific heat capacity (C) = 0.46 J/gºC
Mass (M) = 50 g
Change in temperature (ΔT) = 80 °C
Heat (Q) required =?
Q = MCΔT
Q = 50 × 0.46 × 80
Q = 1840 J
Thus, 1840 J of heat energy is required.
how can juggling improve your hand eye coordination?
Answer:
you can predict where the juggling ball is going to land and the move you hand to catch it
Explanation:
The process of deforestation affects the different biochemical cycles on earth. Give three examples of how deforestation will affect the various cycles.
Answer:
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Planet A has a tilt of five degrees. What seasonal changes would be expected on this planet? Extreme temperature changes between seasons Little to no change in temperatures between seasons Seasonal changes along the equator only Seasonal changes at the poles only
Answer:
Little to no change in temperatures between seasons.
Reason: because i got it right on the test, and i smart
Answer:
Little to no change in temperatures between seasons.
Explanation:
I can confirm this is right
Which of the following elements would you predict to have properties most like that of silicon, aluminum, phosphorous, or germanium?
Which of the following shows the relationship between work and energy?
O A. Work = total energy
B. Work = gravitational potential energy
C. Work = change in kinetic energy
D. Work = change in nonconservative forces
Which color has the lowest frequency?
Eren Jagear supremacy? kind of.. rip? Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?
sis i love the eren season 1-2-3-4 but the eren season 5?....... i just :')
Answer:
Explanation:
Aaron yogurt supremacy
What is inertia and how can you increase an object's inertia?
Answer:
Explanation:
Inertia is the property of a body by virtue of which it opposes any agency that attempts to put it in motion or, if it is moving, to change the magnitude or direction of its velocity.
The more mass, the more inertia. If you increase the mass of the object then you increase the inertia.
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What is the trade off between the input and output forces when someone uses a screw?
Explain how surface waves can have characteristics of both longitudinal waves and transverse waves. Please use 3 content related sentences
Answer:
they can have both ways because it turns out that they can go into different ways light waves are associated with constantly like her to certain ways or
most people use the term light waves when they usually mean visible light in physics however these terms like veins are trying to be used as a synonym of electronic waves electric razor made of skull in magnetic and electric field like always they carry energy
Waldo needs to know how much force to apply in order to move a 4000-kg object at 2 m/S2. Which law should he refer to
A.
law of gravity
B.
second law
C.
third law
D.
first law
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how to calculate acceleration
Answer:
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.
Explanation:
hope it help mark me as brill please
Answer:
acceleration equals the change in velocity divided by time
Explanation:
Dani says, "This classroom is 11 meters long. A meter is longer than a yard, so if I measure the length of this classroom in yards, I will get less than 11 yards."
Do you agree with Dani ?
Answer:
im not sure i just need points....
Explanation: