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Sever21 [200]
4 years ago
6

Pls help me with q 1 2 and 3

Chemistry
1 answer:
igor_vitrenko [27]4 years ago
4 0
1. Solids have a definite<span> volume and </span>shape<span> because particles in a </span>solid<span> vibrate around </span>fixed<span> locations.
2. </span><span>A </span>gas<span> is a substance with no </span>definite volume<span> and no </span>definite<span> shape. </span>Solids have volumes<span> that </span>do not<span> change easily.
3. </span><span>The atoms and molecules in </span>gases<span> are much more spread out than in </span>solids<span>.</span>
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Is potassium fluoride a covalent bond or ionic bond
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Hope this helped!

7 0
4 years ago
Read 2 more answers
Be sure to answer all parts.
Fudgin [204]

Answer:

2H₂ + O₂       →     2H₂O

Explanation:

Chemical equation:

H₂ + O₂       →     H₂O

Balance chemical equation:

2H₂ + O₂       →     2H₂O

Step 1:

H₂ + O₂       →     H₂O

Left hand side                     Right hand side

H = 2                                    H = 2

O = 2                                    O = 1

Step 2:

H₂ + O₂       →     2H₂O

Left hand side                     Right hand side

H = 2                                    H = 4

O = 2                                    O = 2

Step 3:

2H₂ + O₂       →     2H₂O

Left hand side                     Right hand side

H = 4                                    H = 4

O = 2                                    O = 2

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3 years ago
When ash, cinders, and bombs build up in a steep pile around a volcano’s vent, the result is a
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3 years ago
For a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k, calculate the inner diameter if you are designing for
bonufazy [111]

The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m

<h3>What is Stack Height ?</h3>

Stack height means the distance from the ground-level elevation at the base of the stack to the crown of the stack.

If a stack arises from a building or other structure, the ground-level elevation of that building or structure will be used as the base elevation of the stack.

Given is a steel stack that exhausts 1,200 cu.m/min of gases

P= 1 atm and

T= 400 K

maximum expected wind speed at stack height of 12 m/s

The formula for the diameter of chimney

\rm d=\sqrt{\dfrac{4Q}{\pi v} }

Q =1200 cu.m/min

= 1200 * 0.0166 = 19.92 cu.m/sec

Velocity = 12m/s

\rm d=\sqrt{\dfrac{4\times 19.92}{3.14*12} }\\

d= 1.45 m

Therefore The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m.

To know more about Stack Height

brainly.com/question/24625453

#SPJ4

8 0
3 years ago
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