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bob7220
30.07.2019 •
Mathematics
Elio makes candles that are 14 cm tall. each candle burns 8 hours before going out. he is wondering how many hours a 21 cm tall candle can burn for. he assumes that the relationship between the height of a candle and number of hours it burns (h) is proportional. how long can a 21 cm tall candle burn for?
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Ответ:
Find the unit rate
14 ÷ 8 = 1.75 cm/h
Divide
21 ÷ 1.75 = 12
You can set this up as an algebraic equation to check the answer.
If the candle is 21 cm tall, it will burn for 12 hours.
Hope this helped you! :)
Ответ:
The unbalanced chemical equation is-
Li2O + H2O → LiOH
In order to balance the equation # atoms of a particular type on the reactants must be equal to the # atoms of the same type on the products
Reactants Products
Li = 2 Li = 1
O = 2 O = 1
H = 2 H = 1
The balanced equation is -
(1)Li2O + (1)H2O → (2)LiOH