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the metabolism of glucose in a living cells provides energy for their functioning. how many grams of oxygen are used in the metabolism of 1.009 glucose?
C6H12O6 + 6O2 → 6CO2 + 6H2O 1.009 x 6 x 32/180 = 1,07626667 g.
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A food contains 14 grams of fat. How many kilocalories are contributed by fat?
Fat contains 9 calories per gram, so 14 grams of fat contributed 14*9=126 calories=0.126 kilocalories.
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When 40 grams of ammonium nitrate explode 14 grams of nitrogen and 8 grams of oxygen are formed. How many grams of water are formed?
You can calculate this by such reaction: NH₄NO₃ --gt; N₂ + frac12;O₂ + 2H₂O ==gt; 2NH₄NO₃ --gt; 2N₂ + O₂ + 4H₂O The law of conservation of mass solves this...
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balance the equation
68 kcal + O2(g) <-> O3(g) + 31 kcal
To balance the equation we need multiply left part by 3 and right partby 2: 3*68 kcal +3 O2(g) <-> 2 O3(g) + 2*31 kcal After simplifying we obtain the...
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Calcium hydroxide is a strong, moderately soluble base. How many moles of calcium hydroxide are needed to neutralize 0.0900 moles of nitric acid?
Ca(OH)2 + 2HNO3 = 2H2O + Ca(NO3)2 0.0900 mol HNO3 x (1 mol HNO3 / 1 mol Ca(OH)2) = 0.0900 mol Ca(OH)2
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One 55-gran serving of a particular cereal supplies 270 mg of sodium, 11% of the recommended daily allowance. How many moles and atoms of sodium are in the recommended daily allowance?
270 mg*1g/1000mg*1mol/23g=0.0117 mol - 11%100% - 0.107 mol recommended daily allowance (0.107mol*6.02*10^23molecules/1 mol=0.642*10^23 molecules)
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Calculate the energy (in kcal) involved when 15.9 grams of water goes from solid at -20.0 degrees celcius to liquid at 55.0 degrees celcius.
Q=mc∆TQ=15.9 x 4.186 x 75=4991.805 joul4,991805 kj
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Assuming fat provides 9 kcal/g of energy. How much energy can you get from 24 grams of fat? Report your answer in Calories.
Assuming fat provides 9 kcal/g of energy. How much energy can you get from 24 grams of fat? Report your answer in Calories. Solution: Multiply the quantity of fat and caloric content of...
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In 25 grams of a 7.5% by mass solutions of CaSO4
1.) how many grams of solute are present
2.) how many grams of solvent are present
Solution 1.Wt. Of solute in gm. = (25*7.5)/100= 1.875 gm.2. Since wt. of solution = wt. of solute + wt. of solventWt. of solution = 100 gm.Wt. of solvent in...
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Do you think the requirements for an active market in relation to intangibles assets is justified? What problems could occur if the active market requirement was not included for intangible assets?
IAS 38 Intangible Assets outlines the accounting requirements for intangible assets, which are non-monetary assets which are without physical substance and identifiable (either being separable or arising from contractual or...
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