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allsm [11]
2 years ago
8

Which BEST describes how an experiment should be designed?

Chemistry
1 answer:
vova2212 [387]2 years ago
5 0

Answer:

form a hypothesis.

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Determine the number of molecules present in 4.56 moles of nitrogen (n2).
Iteru [2.4K]
To calculate the number of molecules, we can simply use this rule:
number of molecules = number of moles x Avogadro's number

In this problem, we have:
number of moles = 4.56 moles
Avogadro's number is a constant = 6.02 x 10^23

Substituting in the above equation, we can calculate the number of molecules as follows:
number of molecules = 4.56 x 6.02 x 10^23
                                  = 2.74512 x 10^24 molecules
4 0
3 years ago
A non polar solute will most likely dissolve in a polar solvent because opposites attract. Select one: True False
Klio2033 [76]

false because like dissolves like

non polar will dissolve non polar

polar will dissolve polar

7 0
3 years ago
How many ATOMS of sulfur are present in 2.30 moles of sulfur trioxide?
zysi [14]

Answer:

1.39 Atoms

Explanation:

When converting from moles to atoms, multiply the number of moles by Avogadro's number

Multiply 2.30 moles by Avogadro's number (6.022*10^23)

= 1.3851 Atoms

=1.39 Atoms (sigfig)

8 0
2 years ago
10)
VARVARA [1.3K]
I think it’s HCI ......
6 0
2 years ago
Which changes can reach dynamic equilibrium
soldier1979 [14.2K]

Answer:

D - chemical and physical

Explanation:

Only chemical and physical changes can reach the level of dynamic equilibrium. Nuclear reactions cannot reach dynamic equilibrium.

  • A system is in dynamic equilibrium when the rate of forward reaction is the same as that of backward reaction in a reversible reaction.
  • Nuclear reactions cannot be reversed.
  • Dynamic equilibrium is prominent in chemical reactions. It is commonly found that as a reaction occurs, the backward and forward reactions can reach equilibrium levels.
  • In physical changes, this can also occur when certain conditions of pressure and temperatures are satisfied.
5 0
3 years ago
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