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KatRina [158]
4 years ago
14

Which element has the largest nuclear charge? Cs Li Mg S

Chemistry
1 answer:
lesya692 [45]4 years ago
3 0

Answer:

Mg

Explanation:

I think Mg is correct not too sure tho

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Which Domains would you find single cell organisms
kogti [31]
Archaea and Bacteria
8 0
3 years ago
What alkene reacts with methanol in an acid catalyzed reaction to produce t-butyl methyl ether?a. ethyleneb. 2-methylpropenec. 2
AVprozaik [17]

Answer:

                    Option-B (2-methylpropene)

Explanation:

                    The reaction scheme is attached below,

In first step the alkene acts a nucleophile and adds H⁺ across double bond yielding a stable tertiary carbocation.

In the second step the oxygen atom of methanol acts as nucleophile and attacks the positive charge carrying carbon atom resulting in the formation of t-butyl methyl ether.

3 0
4 years ago
The lattice energy of a salt is 350 kJ/mol and the solvation energies of its ions add up to 320 kJ/mol for the preparation of a
4vir4ik [10]

Answer:

It would get <u>colder</u>

Explanation:

The lattice energy is the energy involved in the disruption of interactions between the ions of the salt. In this case, we have: ΔHlat  = 350 kJ/mol > 0, so it is an endothermic process (the energy is absorbed).

The solvation energy is the energy involved in forming interactions between water molecules and the ions of the salt. In this case, we have: ΔHsolv  = 320 kJ/mol > 0, so it is an endothermic process (the energy is absorbed).

The dissolution process involve both processes: the disruption of ion-ion interactions of the salt and the solvation process. Thus, the enthalphy change (ΔHsol) in the preparation of the solution is calculated as the addition of the lattice energy and solvation energy:

ΔHsol= ΔHlat + ΔHsolv = 350 kJ/mol + 320 kJ/mol = 370 kJ/mol

370 kJ/mol > 0 ⇒ endothermic process

Since the preparation of the solution is an <u>endothermic</u> process, it will absorb energy from the surroundings, so <u>the solution would get colder</u>.

3 0
3 years ago
In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce ga
Lady bird [3.3K]

Answer:

0.41kg/sec

Explanation:

PV= nRT

Given : V= 505 L

P=0.88 atm

R= 0.08206 Latm/K*mol

T= 172 .0C = 172+273 = 445 K

n = PV /RT = 0.88 * 505 / 0.08206 * 445 = 12.17 moles per sec of N2 are consumed

As per reaction : N2 + 3H2 ----> 2NH3

1 mole N2 is consumed to produce 2 moles NH3

moles of NH3 produced per sec :

(2 moles NH3/1mol N2) * 12.17 moles N2 = 24.34 moles NH3 per sec

grams of NH3 produced per sec =

24.34 moles NH3 per sec * molar mass NH3 = 24.34 moles NH3 per sec * 17.031 g/mol = 414.5 g NH3 per sec

rate in Kg/sec = 414.5 g NH3 per sec * (1kg /1000g) = 0.4145 Kg/sec

= 0.41kg/sec

5 0
3 years ago
Which of the following is the first stage of the photo-independent reaction?
AVprozaik [17]
Carbon source is the answer for ur question
8 0
3 years ago
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