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Marat540 [252]
3 years ago
10

Plz help well mark brainliest if correct!!

Chemistry
1 answer:
USPshnik [31]3 years ago
6 0

Answer:

the hole in Earth was caused by a meteorite

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I need help for this one please
stepladder [879]

Explanation:

answer is permanent dipole dipole forces hydrogen bonding and van see waals forces

5 0
3 years ago
Which is colder, -30.0 F or 225.0 K?
Juli2301 [7.4K]

Answer:

-30.0 F

Explanation:

225 K is - 48.15 Celsius

-30.0 F is - 1 Celcius

5 0
3 years ago
A 4.98g sample of aniline (C6H5NH2, molar mass is 93.13g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25kJ
natima [27]

 the value  of  delta H°  for aniline = -3201. 5   Kj/mol


<u><em> calculation</em></u>

 Step 1: find heat

Q ( heat)  =  C  ( specific heat capacity)  x ΔT  ( change in temperature)

  C= 4.25 kj/c°

 ΔT = 69.8-29.5  = 40.3 c°

 Q= 4.25 kj/c    x  40.3 c = 171.28 kj

Step 2:  find the moles of aniline

  moles  = mass/ molar  mass

 = 4.98 g/ 93.13 g/mol =0.0535  moles

Step 3 :  find delta H

 171.28 kj   / 0.0535=3201.5 kj/mol


since the reaction is  exothermic  delta  H = -3201.5 Kj/mol

 


3 0
3 years ago
When 50.0 mL of 0.100M iron (III) chloride is mixed with 50.0 mL of 0.100M lead (II) nitrate, why should we determine which reac
White raven [17]
50.000.50.0050.00 I chloride mixed with 500 ml
4 0
3 years ago
Consider the electron configuration. A box holds an up and a down arrow. A box holds an up and a down arrow. A box holds an up a
icang [17]

Answer:

Chlorine

Explanation:

Each arrow represents one electron. Most of the boxes are filled, meaning they have two electrons. The last box only has one arrow, so it only has one electron. If you add it up, you get 17, which is Chlorine.

8 0
4 years ago
Read 2 more answers
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