Why are flowers brightly colored?
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Ответ:
In order to help the plants reproduce, flowers that are bright in color are meant to attract birds, bees and other insects. In the genetics of a flower, bright or dull colors are set in
Explanation:
Ответ:
The correct balanced equation :
H₂SO₄(aq) + 2 NaOH(aq) ⇒ Na₂SO₄(aq) + 2 H₂O(l)
Further explanationConservation of mass applies to a closed system, where the masses before and after the reaction are the same, so balanced chemical equations show that mass is conserved in chemical reactions.
A student wrote the reaction :
H₂SO₄(aq) + Na₂OH(aq) →Na₂SO₄(aq) + H₃O(l)
This reaction is wrong because students make changes to the subscript in chemical compounds (chemical compounds have a fixed mass ratio) while in balancing chemical reactions, what is changed is the reaction coefficient (both products and reactants)
The correct balanced equation.
H₂SO₄(aq) + 2 NaOH(aq) ⇒ Na₂SO₄(aq) + 2 H₂O(l)
This reaction is said to be balanced because the amount of each type of element in the products and reactants is the same
For example :
H, left=2(in H₂SO₄)+2(in 2NaOH)=4, right=2x2(in 2H₂O) =4