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Delicious77 [7]
4 years ago
5

Do the same molecules have to be present on both sides of a chemical equation? why or why not?

Physics
1 answer:
Nadusha1986 [10]4 years ago
7 0
Yes, the same molecules have to be present on both sides of a chemical equation. This is because the equation has to be able to be balanced, and without the same amount of each molecule on each side of the equation, it could not be balanced.
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Before collecting a specimen of urine or feces, the nursing assistant asks the nurse or consults the lab for?
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Before collecting a specimen of urine or feces, the nursing assistant asks the nurse or consults the lab for which storage and delivery method to use.

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2 years ago
What line on a weather map indicates areas where the temperature is the same
Kamila [148]
Question:
What line on a weather map indicates areas there the temperature is the same?

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-Brainly Answerer
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When the sun heats up the suface of the water, the water
nadya68 [22]

Answer:

In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas. Once evaporated, a molecule of water vapor spends about ten days in the air.

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3 years ago
An old streetcar rounds a flat corner of radius 6.80 m, at 18.0 km/h. What angle with the vertical will be made by the loosely h
natka813 [3]

Answer:

\alpha =20.564^{o}

Explanation:

Given data

Radius R=6.80 m

Velocity v=18 km/h =5 m/s

First we need to set up for Force in vertical (y) and horizontal (x)

∑Fy=0=TCosα-W

∑Fx=ma=Fc=TSinα

Solve Vertical force equation for T,substituting mg for W

TCos\alpha -W=0\\TCos\alpha=W\\TCos\alpha=mg\\T=(mg/Cos\alpha)

Substitute expression for Fc and T into horizontal force and simplify it we get

Fc=TSin\alpha\\ where\\Fc=(mv^{2}/R )\\So\\(mv^{2}/R )=(mg/Cos\alpha )Sin\alpha\\(mv^{2}/R )=mg*tan\alpha\\  tan\alpha =\frac{v^{2} }{Rg}\\ \alpha =tan^{-1}(\frac{(5m/s)^{2} }{(6.80m)(9,8m/s^{2} )} )\\ \alpha =20.564^{o}

 

5 0
3 years ago
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