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Lisa [10]
3 years ago
13

PLEASE HELP ME WILL DO ANYTHING ‼️‼️

Chemistry
1 answer:
deff fn [24]3 years ago
6 0

Answer:

In first shell 2 electrons are present and 7 electrons are present in last shell

Explanation:

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How many valence electrons does p3- have
vazorg [7]

Answer: 8 valence electrons

Explanation:

7 0
3 years ago
You are given 600 grams of sodium chloride (NaCl), but you are planning to purify the substance and extract just the sodium. How
Eddi Din [679]

Answer:

236.02 grams of Na is produced by 600g of NaCl.

Explanation:

NaCl --> Na+Cl-

to find the number of moles NaCl has, divide the grams over the molar mass which is 600/58.44

number of moles of nacl= 10.2 moles

then turn moles back to grams which is moles x molar mass

10.2 moles x 22.9 mass

= 236.02 grams

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What is happening when there is condensation
Colt1911 [192]
The water becomes a vapor. there are 2 ways condensation happens: either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.  
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3 years ago
Crude oil is a mixture of many different chemical compounds.
evablogger [386]

Answer:

092) Icosane

093) Ethene

Explanation:

092) The given compounds are;

Decane C₁₀H₂₂; Viscosity = 0.850 mPa·s (25°C)

Ethene C₂H₄ (gas); Viscocity ≈ 0.01038 m

Icosane C₂₀H₄₂; Solid at room temperature

Methane CH₄; gas at room temperature

The viscosity of the given carbon and hydrogen compounds is observed to increase with their molar masses

Therefore, icosane, which is a solid at room temperature, has the highest viscosity (resistance to deformation) out of the given compounds

093) Polymers are made from monomer alkene units, therefore, ethene, which is the only alkene among the given compounds can be used to produce a polymer

Polyethene is formed by the polymerization of ethene whereby molecules of ethene are joined together to form poly(ethene)

6 0
3 years ago
when magnesium is burned in air the mass of the product is greater than the mass of the solid magnesium burned. A student claims
Nikitich [7]
Veg egverbygbe rbbnfghjufddfg
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