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ikadub [295]
3 years ago
9

In the equation Ca(s) + 2H2O(l) -->Ca(OH)2(aq) + H2(g) list each element used as a reactant, and tell how many atoms of each

are needed for this reaction.
Physics
1 answer:
Mekhanik [1.2K]3 years ago
3 0

The reactants are <em>Calcium</em>, <em>Hydrogen</em> and <em>Oxygen</em>.

We need 1 atom of <em>Calcium</em>, 4 atoms of <em>Hydrogen</em> and 2 atoms of <em>Oxygen</em>.

Hope this helps.

r3t40

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Answer:

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Explanation:

It says “Momentum before the collision is equal to momentum after the collision.” Elastic Collision formula is applied to calculate the mass or velocity of the elastic bodies.

m_{1} v_{1}=m_{2} v_{2}

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\mathrm{v}_{2}=\frac{3000}{900}

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\mathrm{v}_{2} \text { velocity after the collision is } 3.3 \mathrm{m} / \mathrm{s}

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4 years ago
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