Write a word equation for 2ZnS(s)+3O2(g) -> 2ZnS(s) + 2SO3(g)
Answers
2ZnS(s)+3O2(g) -> 2Zns(s) + 2SO3(g)
the above given equation is unbalanced as it contains 4 moles of sulphur in the output but in the input there are only two aoms of sulphur so to balance the equation we will write the equation as given under
balanced equation is
2ZnS(s)+3O2(g) -> 2Zn(s) + 2SO3(g)
In words:
When 2 moles of solid zinc sulfide reacts with 3 moles of oxygen gas gives 2 moles of solid zinc and 2 moles of sulphur trioxide gas.
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The word that best fits is frequency. Thus,the sentence is,the frequency of a wave is a measure of the amount of energy it carries.
The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
There is a direct relationship between frequency and energy of a wave. The constant of proportionality is h, Planck's constant. So, Energy = h frequency. So, the answer is frequency.
Learn more about electromagnetic radiation,here:
#SPJ6
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Answer:
Caustic Soda
Limewater
Milk of Magnesia
Bleach
Explanation:
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The relative motion of a person riding in a car has been stationary with car, uniform constant with road, and sun.
The motion has been defined as the change in position of an object with respect to another.
Relative motion
The relative motion has been observed by considering an object at rest and assuming the displacement with the another.
The relative motion has been assessed from car, thus car has been assumed at rest.
- The relative motion of the person ridding in the car with respect to the car has been stationary. It has been no motion of person with respect to car.
- The relative motion of the person riding the car with the road has been constant. The car has been moving along the road in the motion.
- The relative motion of person riding car with the sun has been constant as there has no change in the motion of the sun as soon as we are riding in straight path.
Thus, the relative motion of a person riding in a car has been stationary with car, uniform constant with road, and sun.
Learn more about relative motion, here:
Relative to the road, i'm moving fast as the cars speedometer says.
Relatively to the sun, i'm orbiting it at a very high speed.
Hope this helps! =]
(2) 4.8% (4) 0.05%
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Percen by mass of water in the hydrate determined by the student
in the laboratory = 37.8%
So the difference between the actual and the percent by mass in water determined by student = (37.8 - 36.0)%
= 1.8%
So the percentage of error made by the student = (1.8/36) * 100 percent
= (18/360) * 100 percent
= ( 1/20) * 100 percent
= 5 percent
So the student makes an error of 5%. Option "1" is the correct option.
Answer:
5%
Explanation:
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
Answers
The value of ΔH will be 249.75 KJ.
To obtain the reaction :
PCl5(g) → PCl3(g) + Cl2(g)
We have to add the given reactions and then divide it by 4.
(i) adding the reactions
P4(s) + 6Cl2(g) → 4PCl3(g) ΔH = -2439 kJ
4PCl5(g) → P4(s) + 10Cl 2(g) ΔH = 3438 kJ
we get:
4PCl5(g) → 4PCl3(g) + 4Cl2(g), ΔH = 3438 - 2439
(ii) dviding by 4
PCl5(g) → PCl3(g) + Cl2(g) , ΔH = (3438 - 2439)/4
ΔH = 249.75 kJ is the required enthapy.
Learn more about enthalpy:
Answer:
The value of for the desired reaction will be 249.75 KJ.
Explanation:
The desired reaction is shown below
The desired reaction can be obtained by adding the given reactions and then dividing both sides by 4.
Net Enthalpy change for the desired reaction