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MakcuM [25]
3 years ago
13

Let's say you are sanding a rough board to make shelves for you bedroom. What type of weathering would this be? How do you know?

Chemistry
1 answer:
OlgaM077 [116]3 years ago
3 0

Answer:

Physical or Mechanical weathering.

Explanation:

  • The sanding is a physical transformation of the rough board to make shelves for the bedroom and thus includes wear and tear of the wood in order to make the set. Hence the process includes grinding, polishing and smoothing the surface to make it usable.
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Pls help
Simora [160]

Heat required to raise the temperature = 159.505 J

<h3>Further explanation</h3>

Given

c = specific heat of Beryllium = 1.825 J/g C

m = mass = 2.3 g

Δt = Temperature difference : 60 - 22 = 38 °C

Required

Heat required

Solution

Heat can be formulated

Q = m.c.Δt

Input the value :

Q = 2.3 x 1.825 x 38

Q = 159.505 J

8 0
2 years ago
For work to be done on an object:
Mazyrski [523]

Answer:

The object has to move a distance when a force is applied to it

Explanation:

For work to be done on a body the force applied must move the body through a particular distance.

  Work done  = Force x distance  

If no distance is moved by the force, no work is done.

Also, the angle between the force and the distance must be 0 to do the maximum work on the body.

8 0
3 years ago
An exothermic reaction __________ energy.
qwelly [4]
It releases energy (what I am saying in other words that "D. Releases" would be your answer)
8 0
3 years ago
Read 2 more answers
A gas occupies a volume at 34.2 mL at a temperature of 15.0 C and a pressure of 800.0 torr. What will be the volume of this gas
Grace [21]
The answer is 34.1 mL.
Solution:
Assuming ideal behavior of gases, we can use the universal gas law equation
     P1V1/T1 = P2V2/T2
The terms with subscripts of one represent the given initial values while for terms with subscripts of two represent the standard states which is the final condition.
At STP, P2 is 760.0torr and T2 is 0°C or 273.15K. Substituting the values to the ideal gas expression, we can now calculate for the volume V2 of the gas at STP:
     (800.0torr * 34.2mL) / 288.15K = (760.0torr * V2) / 273.15K
     V2 = (800.0torr * 34.2mL * 273.15K) / (288.15K * 760.0torr)
     V2 = 34.1 mL
3 0
3 years ago
Read 2 more answers
Ghjhikkbnmkkkjjjjhnnmnn
Nuetrik [128]

Explanation:

What's Dis Suppose To Mean ?

7 0
3 years ago
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