Answer:
2.55 moles
Explanation:
Please see the step-by-step solution in the picture attached below.
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Answer:36 grams of water is produced. Law of conservation of matter states that mater cannot be created or destroyed. 16 grams of methane added to 64 grams of oxygen equals 80 total grams of reactants. 80 grams minus 44 grams of carbon dioxide is 36. This means there must be 36 grams of water, and you end with the same mass of reactants as in the beginning. Hope this helps! Good luck!
Explanation:
Drop it into water. Measure the time required for tablet to fully dissolve. Be prepared to start and stop on time. The reaction will take less than 15 seconds.Answer:
Explanation:
Questions are as follow, and answered one by one,
(1) What is step 1 in solving the problem?
Answer:
First of all moles of NaOH are calculated. This is done by applying following formula,
Moles = n = Mass / M.mass
(2) What is the molar mass of NaOH?
Answer:
Add all atomic masses of elements in NaOH to find the Molar mass.
Atomic Mass of Na = 22.98 g/mol
Atomic Mass of O = 16.00 g/mol
Atomic Mass of H = 1.008 g/mol
_______________
Molar Mass of NaOH = 39.988 g/mol
<span>(3) What is the Molarity of this solution?
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Answer:
Molarity = Moles / Vol
∴ Moles = 40g / 39.988g/mol = 1.0 mol
So,
Molarity = 1.0 mol / 6.0 L
Molarity = 0.16 mol.L⁻¹