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Inessa [10]
2 years ago
7

The La Brea Tar Pits are _______. (multiple choice answers in attached file)

Chemistry
2 answers:
deff fn [24]2 years ago
7 0
The answer is B

Hope this helps
Alekssandra [29.7K]2 years ago
4 0
B filled with made from mammals
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How many Mg atoms are presented in 3.00 moles of MgCl2
ella [17]

Answer:

1.81 x 10²⁴ atoms

Explanation:

To find the number of atoms in the given number of moles, we need to understand that every substance contains the Avogadro's number of particles.

More appropriately, a mole of any substance will contain the Avogadro's number of particles which is 6.02 x 10²³ atoms

 So;

           If 1 mole of a substance  = 6.02 x 10²³ atoms;

               3 mole of MgCl₂ will contain 3 x 6.02 x 10²³ = 1.81 x 10²⁴ atoms

3 0
2 years ago
What is mass????????????????????
lbvjy [14]

Answer:

Do you need the definition or the equation to find it?

Explanation:

Equation:

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4 0
3 years ago
Phosphorus has three electrons in its 3p sublevel and sulfur has four. Phosphorus should have the lower ionization energy but it
Nadya [2.5K]

Answer:

B

Explanation:

First of all it is important to know that a half filled orbital is particularly stable. In phosphorus all the electrons occur singly in the 3p sublevel minimizing inter electronic repulsion hence it is more difficult to remove an electron from this energetically stable arrangement. In sulphur, electrons are paired in one of the 3p orbitals thereby lowering the energy of that level due to instability caused by interelectronic repulsion between two electrons in the same orbital.

8 0
2 years ago
TRUE OR FALSE?<br><br> Solvents are the component in solutions with highest percent composition
mario62 [17]

Answer:

True

Explanation:

I think this is a helpful for you

3 0
2 years ago
What is the mass of 4.42 cm3 of platinum? The density of platinum is 22.5 g/cm3. (Sig Fig rules + units)
fgiga [73]

Answer: 99.45 g

Explanation: we have 22.5 g of Platinum in every 1cm3 of Platinum so if we take 4.42 cm3 of Platinum we will have 4.42 × 22.5 g = 99.45 g of Platinum

7 0
2 years ago
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