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Stella [2.4K]
3 years ago
15

How many naturally occurring elements are present on the product table?

Chemistry
1 answer:
algol [13]3 years ago
6 0
The first 92 elements of the periodic table are naturally occurring elements.
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True or false
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Answer:

true because of the elements

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3 years ago
Never been taught this. Need help.
N76 [4]
Definitely not D i would guess A or B
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What is the atomic number for neon?
Anna35 [415]
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3 years ago
Two moles of magnesium (Mg) and five moles of oxygen (O2) are placed in a reaction vessel. When magnesium is ignited, it reacts
SOVA2 [1]

Answer:

\boxed{\text{Mg is the limiting reactant}}

Explanation:

We are given the amounts of two reactants, so this is a limiting reactant problem.

We know that we will need moles, so, lets assemble the data in one place.

           2Mg + O₂ ⟶ 2MgO

n/mol:    2       5

Calculate the moles of MgO we can obtain from each reactant.

From Mg:  

The molar ratio of MgO:Mg is 2:2

\text{Moles of MgO} = \text{2 mol Mg} \times \dfrac{\text{2 mol MgO}}{\text{2 mol Mg}} = \text{2 mol MgO}

From O₂:  

The molar ratio of MgO:O₂ is 2:1.

\text{Moles of MgO} = \text{5 mol O}_{2} \times \dfrac{\text{2 mol MgO}}{\text{1 mol O}_{2}} = \text{10 mol MgO}\\\\\boxed{\textbf{Mg is the limiting reactant}} \text{ because it gives the smaller amount of MgO}

6 0
3 years ago
Why is much of the ocean floor so difficult to see?
nlexa [21]

Answer:

because ocean currents deposit sediment on the ocean floor.

5 0
3 years ago
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