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matrenka [14]
3 years ago
7

Who came up with the idea that all the continents were once joined together

Chemistry
2 answers:
makkiz [27]3 years ago
8 0
Alfred Wegener came up with the idea
uysha [10]3 years ago
5 0
Alfred Wegener came up with the idea 
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Can anyone please help me find molar masses of compounds. For example Copper (ll) sulfate (CuSO4)
Alina [70]

Answer:

Explanation:

You would have to add up the atomic masses of all the compounds in the compound, making sure you include how many molecules of each are in the compound

For example, in CuSOA we have 1 molecule of Cu and S, as 4 molecules of O

The atomic masses are as follows:

Cu = 63.55 u

S = 32.065 u

O = 15.99 units

This is how we would add it up:

(Atomic mass of Cu) + (Atomic mass of S) + 4(Atomic Mass of O)

(63.55) + (32.065) + 4(15.99)

(63.55) + (32.065) + 63.96

= 159.575 u

7 0
2 years ago
Read 2 more answers
The empirical formula for a compound is C2H4NO. If its molar mass is 232.2 g/mol, what is the molecular formula of the compound?
Irina18 [472]

Empirical formula mass

  • C2H4NO
  • 2(12)+4(1)+14+16
  • 30+24+4
  • 58g/mol

Molar mass=232.2g/mol

Find n

  • Molar mass/Empirical formula mass
  • 232.2/58
  • 4

Molecular formula

  • n×Empirical formula
  • 4(C2H4NO)
  • C8H16(NO)_4
4 0
2 years ago
Can someone answer this for me please
Nana76 [90]
Answer:
Just did but answer what??
3 0
3 years ago
Read 2 more answers
A cough syrup has a density of 1.20 g/mL. A doctor orders 48.0 of the syrup for a sick child. How many teaspoons will you admini
Anarel [89]

Answer:

because I want to save life

6 0
3 years ago
A gas occupies 525 mL at a pressure of 85.0 kPa. What would the volume of the gas be at
Ratling [72]

Answer:

The volume would be 689 ml (0,689 L)

Explanation:

In this case, we apply the Boyle Mariotte formula, where for a certain mass of gas at constant temperature, the pressure and temperature vary inversely proportionally (P1xV1 = P2xV2). We pass the units of pressure (kPa to atm) and volume (from ml to L).  525/1000= 0,525 L

101,325Kpa----1 atm

85kPa ----------x= (85kPa x 1 atm)/101,325Kpa=0,84 atm

65kPa-----------x= (65kPa x 1 atm)/101,325Kpa=0,64 atm

P1xV1 = P2xV2  V2= (P1xV1)/P2

V2= (0,84atm  x 0,525 L)/ 0,64 atm = 0,689 L --> 0,689 x 1000= 689 ml

6 0
3 years ago
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