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SOVA2 [1]
3 years ago
13

You have 1.2 L of air in a balloon 175 K. what is the new volume of the balloon when it is heated to 245 K

Chemistry
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

A) 1.68 L

Explanation:

  • Charles’ Law states that: at constant pressure, the volume is directly proportional to the temperature of the gas.
  • It can be expressed as: V₁T₂ = V₂T₁,

V₁ = 1.2 L, T₁ = 175.0 K, V₂ = ??? L, T₂ = 245.0 K.

∴ V₂ = V₁T₂/T₁ = (1.2 L)(245.0 K)/(175.0 K) = 1.68 L.

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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.

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2 years ago
What is the relationship between melting/boiling point and intermolecular forces
sattari [20]
Boiling points are a measure of intermolecular forces. The intermolecular forces increase with increasing polarization of bonds. Boiling point increases with molecular weight, and with surface area.
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Write the name for NaCl
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The name for NaCl is Sodium chloride

<h3>Salt and it's examples.</h3>

Salt is defined as the chemical compound that contains both a positively charged cation.and negatively charged anion.

It is formed by the reaction of acid and base is a neutralisation reaction.

Examples of salt include:

  • Sodium Chloride or Common Salt (NaCl)

  • Sodium Hydroxide (NaOH)

  • Sodium Carbonate or Washing Soda (Na2CO3.10H2O)

  • Baking Soda or Sodium Bi-carbonate (NaHCO3)

  • Bleaching Powder or Calcium Hypochlorite.

Therefore another name for salt is common salt.

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Answer:

What is a Metal ? Metals. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

Explanation:

Metalloid, in chemistry, an imprecise term used to describe a chemical element that forms a simple substance having properties intermediate between those of a typical metal and a typical nonmetal. ...

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B, sorry if i am wrong.
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