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enot [183]
3 years ago
5

A. Is lithium (Li) more or less reactive than beryllium (Be)?

Chemistry
1 answer:
damaskus [11]3 years ago
5 0

Answer:

Li is more reactive then Be.

Explanation:

As you go to the farther left and down on the periodic table, the higher that element reactivity is.

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What is the number of formula units in a 5.88 mol sample of Ca2O?
Viktor [21]
5.88 moles x 6.02x10^23<span> f.u./mole = </span><span>3.54x1024 formula units</span>
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3 years ago
A distillation column with a partial reboiler and a total condenser is being used to separate a mixture of benzene, toluene, and
ololo11 [35]

Answer:

11.8.4 Distillation Columns

Distillation columns present a hazard in that they contain large inventories of flammable boiling liquid, usually under pressure. There are a number of situations which may lead to loss of containment of this liquid.

The conditions of operation of the equipment associated with the distillation column, particularly the reboiler and bottoms pump, are severe, so that failure is more probable.

The reduction of hazard in distillation columns by the limitation of inventory has been discussed above. A distillation column has a large input of heat at the reboiler and a large output at the condenser. If cooling at the condenser is lost, the column may suffer overpressure. It is necessary to protect against this by higher pressure design, relief valves, or HIPS. On the other hand, loss of steam at the reboiler can cause underpressure in the column. On columns operating at or near atmospheric pressure, full vacuum design, vacuum breakers, or inert gas injection is needed for protection. Deposition of flammable materials on packing surfaces has led to many fires on opening of distillation column for maintenance.

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The protection of distillation columns is one of the topics treated in detail in codes for pressure relief such as APIRP 521. Likewise, it is one of the principal applications of trip systems.

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8 0
2 years ago
What is the density of the black hole
Karolina [17]

the density of a black hole is 22.61 g/cm3 i think

7 0
3 years ago
Read 2 more answers
How to calculate density (what’s the formula) <br> density=_ divided by _
Sphinxa [80]

Answer:

density equals weigt divided by volume

Explanation:

density =  \frac{m}{v}

8 0
3 years ago
How many grams of barium chloride (BaCl2) are there in 0.187 mol?<br> 0.187 mol
igor_vitrenko [27]

Answer:

38.9 grams of BaCl_2

Explanation:

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38.896 g --> 38.9 g BaCl2

8 0
3 years ago
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