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Leya [2.2K]
3 years ago
5

How can railways take care of bridges from getting collapsed by rusts​

Chemistry
1 answer:
Shalnov [3]3 years ago
6 0
<h2>A few things that are done to preserve bridges include: </h2>

Washing and cleaning.

Sealing deck joints.

Clearing drainage areas.

Sealing cracks.

Painting exposed elements.

Removing trash and other debris.

Protecting against scour.

Lubricating bearings.

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Answer: there is  no real difference between the two.

Explanation:

some teachers just like to explain how a chemical reaction is anything involved with chemicals and any other process is just explained as a physical process

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10 m/s to 80 m/s in 5 seconds
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Each element possesses unique chemical and physical properties. true or false
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3 years ago
g 32.53 g of a solid is heated to 100.oC and added to 50.0 g of water in a coffee cup calorimeter and the contents are allowed t
Radda [10]

Answer:

0.886 J/g.°C

Explanation:

Step 1: Calculate the heat absorbed by the water

We will use the following expression

Q = c × m × ΔT

where,

  • Q: heat
  • c: specific heat capacity
  • m: mass
  • ΔT: change in the temperature

Q(water) = c(water) × m(water) × ΔT(water)

Q(water) = 4.184 J/g.°C × 50.0 g × (34.4 °C - 25.36 °C) = 1.89 × 10³ J

According to the law of conservation of energy, the sum of the energy lost by the solid and the energy absorbed by the water is zero.

Q(water) + Q(solid) = 0

Q(solid) = -Q(water) =  -1.89 × 10³ J

Step 2: Calculate the specific heat capacity of the solid

We will use the following expression.

Q(solid) = c(solid) × m(solid) × ΔT(solid)

c(solid) = Q(solid) / m(solid) × ΔT(solid)

c(solid) = (-1.89 × 10³ J) / 32.53 g × (34.4 °C - 100. °C) = 0.886 J/g.°C

8 0
3 years ago
When organizing your narrative, what are the 3 sections that make up a story (planning the specific order)
Sveta_85 [38]

Answer:

#1 Exposition

#2 Background information

#3 Complication

this is right unless you're speaking of theme plot conflict climax falling action or conclusion

3 0
3 years ago
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