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TPP103 Semester 1 2010 Measurement in chemistry problem assignment (Assessment Task 3) This assignment is worth 15% of the total assessment for this

pleas answer all the questions on my asignemtn i can not do them at all!
TPP103 Semester 1 2010 Measurement in chemistry problem assignment (Assessment Task 3) This assignment is worth 15% of the total assessment for this course. All questions are of equal value. Make sure to include all working and show units. 1. CO 2 in solid form is called dry ice. You have a block of dry ice that weighs 500g. How many CO 2 molecules do you have? 2. Olive oil is almost pure triolein (a molecule). The molar mass of triolein is 885 g/mol. How many olive oil molecules have you got in 500g of olive oil? 3. How many molecules are in 1 L of water (assume that the density of water is 1g/ml)? (5 marks) 4. Cyclopropane, C 3 H 6 is an anaesthetic given by inhalation. How many grams are in a 0.250 mole sample of cyclopropane? 5. Isotonic saline and is often given to patients intravenously to replenish lost fluids. Isotonic saline is a 0.9% (g/100ml) solution of salty water. You are asked to make up 2 l of isotonic saline. How much salt should you weigh out? TPP103 Bioscience 1
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6. If we combine nitrous oxide (NO, laughing gas) with oxygen (O 2 ) we produce nitrogen dioxide (NO 2 ) according to the following reaction: 2NO + O 2 → 2NO 2 How many grams of NO 2 will be produced when 5.00 moles of NO react? 7. Write the following in scientific notation: 2033 km _________________________ 54 890 W _________________________ 0.073 461 kg _________________________ 0.000 006 411 72 m _________________________ 0.3695245454 _________________________ 8. Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced? TPP103 Bioscience 2
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This assignment is worth 15% of the total assessment for this course.
All questions are of equal...

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