The answer is D)
<span>when the remains of a living thing are preserved and turned into rock
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Mass of B₂ = 18.75 g
<h3>Further explanation</h3>
Given
Element A and element B
Required
The reaction
mass of B₂
Solution
The balanced equation :
2A(s) + B₂(g) ⇒2AB(s)
mol AB :
= Molarity x Volume
= 2.5 M x 0.25 L
= 0.625
From the equation, mol ratio of B₂ : AB = 1 : 2, so mol B₂ :
= 1/2 x mol AB
= 1/2 x 0.625
= 0.3125
Mass B₂ (Molar mass = 2x30 g/mol=60 g/mol)
= mol x molar mass
= 0.3125 x 60 g/mol
= 18.75 g
In the mole ratio. If you have moles of one substance. And the coefficients from the balanced equation you can use the ratio to figure out the moles of the other compounds.
Answer:
<h2>The answer is 10 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
<h3>Force = mass × acceleration </h3>
From the question
mass = 0.5 kg
acceleration = 20 m/s²
We have
Force = 0.5 × 20
We have the final answer as
<h3>10 N</h3>
Hope this helps you
Answer:
D) Vernal and autumnal equinoxes.
