3 years ago

Why does the amount of water that flows in a river change during the year?

1 answer:

7 0

It might change because of the amout of rain that fell in the year and the melting of ice which allows the water amount to increase

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Explanation:

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3 years ago

What are the coefficients that will balance the skeleton equation below?alcl3 + naoh → al(oh)3 + nacl?

Karo-lina-s [1.5K]

AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl

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Why is amniocentesis a more widely used test than cvs?

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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

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2 years ago

How many grams of octane (C8H18) must be burned to produce 300.0g of CO2?

nika2105 [10]

Answer:

$m_{C_8H_{18}}=85.67gC_8H_{18}$

Explanation:

Hello there!

In this case, according to the given combustion reaction of octane, it is possible for us to perform the stoichiometric method in order to calculate the mass of octane that is required to consume 300.0 g of oxygen by considering the 2:25 mole ratio, and the molar masses of 114.22 g/mol and 32.00 g/mol respectively:

$m_{C_8H_{18}}=300.0gO_2*\frac{1molO_2}{32.00gO_2}*\frac{2molC_8H_{18}}{25molO_2}*\frac{114.22gC_8H_{18}}{1molC_8H_{18}} \\\\m_{C_8H_{18}}=85.67gC_8H_{18}$

Regards!

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Jeremy had a set of 500 toy blocks that could be connected by snapping them together. At first, he used all the blocks to build

valentina_108 [34]

The masses were the same

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