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For example, dimensional analysis could be used to determine the number of nickels in 3432.35 dollars. 34R5 dellar • To begin, write down the starting value, 3432.35 dollars. This can also be written as a fraction: • Next, convert dollars to cents. This conversion involves a simple conversion factor: Note that the "dollar" unit should appear on the bottom of this conversion factor, since "dollars" appears on the top of the starting value. • Finally, convert cents to nickels. This conversion also involves a simple conversion factor. This time "cents" should be on the bottom of the conversion factor, I dellar S centa since it was on top of the previous conversion factor. • Combining these expressions gives us 100 cents 1 dollar • Finally, cancel units. Since dollars are divided by dollars, and cents are divided by cents, both of these units can be canceled. Multiplying through gives the final result: 100 cents 1 dolhar 1 nickel 5 cents 3432.15 dollars 3432.35 dollars 1 nickel 68, 647…

1. A candle is placed on one pan of a balance, and an equal weight is placed on the other pan. What would happen if you lit up the candle and waited for a while?. 2. Suppose the candle was placed in a large, sealed jar that allowed it to burn for several minutes before running out of oxygen. The candle and jar are balanced by an equal weight. In this situation, what would happen if you lit up the candle and waited? Gizmo Warm-up Burning is an example of a chemical reaction. The law of conservation of matter states that no atoms are created or destroyed in a chemical reaction. Therefore, a balanced chemical equation will show the same number of each type of atom on each side of the equation. To set up an equation in the Chemical Equations Gizmo, type the chemical formulas into the text boxes of the Gizmo. First, type in "H2+02" in the Reactants box and "H20" in the Products box. This represents the reaction of hydrogen and oxygen gas to form water. Reactants H2+O2 2. Based on what you…

Table 1. Mass calculations for copper electrode. Mass of copper (initial) (g) Mass of copper (final) (g) Mass of copper oxidized (g) 1. Table 2. Record of current (measured in amps) and time (measured in minutes) as they changed throughout the experiment. 0 3 6 9 Complete the following table: Table 3. Summary of observation data. 2.4622 Time Current Time Current Time 24 0.154 12 15 0.153 27 18 0.152 30 21 0.152 33 0.157 0.156 0.155 0.155 Data Analysis: 2.3269 0.135 Total reaction time (s) Average current (A) Volume of H, produced (mL) Barometric pressure (kPa) Partial pressure of water vapour (kPa) Partial pressure of H₂ al produced (kPa) Temperature (°C) Current Time Current 0.151 36 0.151 39 0.150 42 0.149 45 50.00 101.40 3.19 25.00 0.148 0.148 0.147 0.146 Show how you calculated the partial pressure of the hydrogen gas that was produced. 2. Determine the number of mols of H₂ gas produced using the ideal gas law. R = 8.314 kPa L mol-¹K-¹ (1) (2) Based on the anode information (3) (1)…

This is relation to Determining the formula of a Hydrate Suppose that in the experiment the student failed to heat the crucible and hydate sample long enough to drive off all the water. How would this mistake influence the value of n determined for the hydrate if everything else was done correctly?  Circle the answer and explain:  A. Make it greater than the correct value  B. Make it less than the correct value    EXPLAIN:    Suppose the glassware was not dry, then the student recorded the initial amount of sample.  How will this influence the results?  ?  Circle the answer and explain:  A. Make it greater than the correct value  B. Make it less than the correct value    EXPLAIN:

THE QUESTION IS AT THE PICTURE... 2 QUESTIONS ONLY.. AND THE GIVEN PROBLEMS IS THE ONE I TYPED............. PLEASE TYPE YOUR ANSWER PLEASE.... ATTACHED PICTURE IS MY ANSWER BUT IM NOT SURE ABOUT IT PLEASE CORRECT ME IF IM WRONGB. Surface Area1. Weigh a small iron nail to the nearest hundredths of a gram and weigh an equalamount of iron fillings.2. Place them in a separate test tubes.3. Add simultaneously 3 mL of 3N hydrochloric acid and compare the rates of reaction.

5. You will be given some samples to weigh on the electronic balance in the laboratory. Place a piece of weighing paper on the pan of the balance and push the zero (tare) button so the balance registers 0.000 g. Carefully place one of the samples on the paper and record its mass in table below. Carefully remove the sample. Repeat this procedure for the other samples. Determine the average mass and average deviation of the samples. Show all work. Record the individual masses of each item in the blanks to the left below. Sample No. 1 2 3 4 5 Mass 5.029_ 5.010 4.983 5.036 4.989 Average Mass Average Deviation Standard Deviation OD 60 OD

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Kindly help me with questions 5- 9  Thank you

Suppose that you heated the hydrated copper (II) sulphate in a test tube, instead of a beaker. How might this affect your results? 4 MAY 19 ... MacBook Pro & * %23 $ 2 3 4 5 6 7 E Y U G H J K C V M MOSISO command option command レー

A homogeneous mixture of two or more substances is called ________   a. a mess. b. a solution. c. an electrolyte. d. a solvent. e. a compound.

When you use a balance to weigh a reagent, you should weigh onto: -a filter paper. -the top of the balance. -a folded weighing paper or weighing boat.

THE QUESTION IS AT THE PICTURE... 2 QUESTIONS ONLY.. AND THE GIVEN PROBLEMS IS THE ONE I TYPED...... EXAMPLE ANSWER ON THE SECOND PICTURE... BUT  IM NOT SURE IF IT IS CORRECT.. DONT MIND MY ANSWER PLSS.B. Surface Area1. Weigh a small iron nail to the nearest hundredths of a gram and weigh an equalamount of iron fillings.2. Place them in a separate test tubes.3. Add simultaneously 3 mL of 3N hydrochloric acid and compare the rates of reaction.

What's In I. True or False. Write true if the statement is correct and false if it is incorrect. Use separate paper for your answers. 1. In sterilization process, alcohol solution should be 70%-90%. 2. It is very important to observe safety rules in sanitizing tools and equipment. 3. First thing to do in the preparation of metal implements is to soak the tools in cold soapy water. 4. Remove immediately tools and implements from disinfectant solution. 5. In storing tools and implements keep unclean and dull. 6. All hair, used cotton or other waste materials must be removed from the floor right away, and deposit it in a closed container. 7. Each beautician must wear a washable uniform while serving clients. 8. Only VIP's client must be provided with a freshly laundered towel. 9. Finger bowls must be sanitized before another client use them. 10. All waste materials should be disposed of in an enclosed waste bin fitted with polythene bin liner, durable enough to resist tearing.

A ______________ is the sharing of electrons between two atoms.

What is Flame Test Experiment? Discuss. What is your observations about this flame test experiment? Discuss. What is your own conclusion about this experiment? Discuss.

Mass of weighing tray:  1.435 g Mass of weighing tray and salicylic acid:  3.469 g Mass of salicylic acid used:  2.027 Mass of filter paper:  0.862 g Volume of acetic acid anhydride used:  4.06 mL Drops of sulfuric acid used:  5 Data Table (Product Yield) Mass of watch glass:  16.342 g Mass of watch glass, acetylsalicylic acid, and filter paper:  19.609 g Actual yield:  mass of acetylsalicylic acid:  ? Calculate percent yield Show the calculation for the number of moles of salicylic acid present in the reaction mixture.

Routinely in the police field, spot tests are performed to identify different compounds such as drugs (amine group) or alcohol concentrations in a possible DUI case. In this experiment, you will familiarize yourself with specific tests for various functional groups and use that information to identify an unknown compound (Exp. 58 - parts A, B, C, D, F and H). Name of Name of Positive test Negative Chemical Functional Generic Reaction for Test result/color test result/ Test change or precipitate color of test group reacts with test reagent Ignition Hydrocarbons Alcohols yellow, soty flame Doesn't Test Arom + 0, (g) ----> CO, (g) + H,O burn Solubility in 5% HCI Solubility in 5% NaHCO3 Solubility in 5% NaOH Silver Nitrate Test Bromine Alkenes, Test Alkynes KMNO, Test

What are the possible sources of error when reacting sodium bicarbonate and hydrochloric acid within an evaporating dish over wire gauze over a bunsen burner? Procedure of the lab down below.

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Please help me complete question 4,5,and6.

1 of 22 > Line 1 6 - 4 3. Answer Bank Line 1 shows that cogs are inversely proportional to sprockets. Line 2 1 3 5 6 . 7 8 . 6. Line 1 shows that cogs are directly proportional to sprockets. Sprockets Line 2 shows that cogs are directly proportional to sprockets. Line 2 shows that cogs are inversely proportional to sprockets. 13 人tv T W. Cogs 4.

The purpose of a centrifuge is to separate a sample into a  Choose...solid,warm,pure    component and a  Choose...liquid,cold,impure    component.

Materials needed: • 10 marbles, 10 paper clips, 10 buttons • 2 small plastic jars • Sugar • Saw dust • Spoon Procedure: (Provide documentation in a separate page) 1. Place equal number of marbles, paper clips and buttons in jar A and jar B. Add a spoonful of sugar and a spoonful of saw dust only in Jar B. 2. Cover each jar and shake to mix the contents. Observe each jar. Complete the table below: Jar Items mixed together How do the different materials in the jars look like after they were mixed?

Chemistry  ...

2) Which of the following is intensive property? A. The amount of energy produced upon burning gasoline. B. The cost of gasoline. C. The temperature at which ice melts. D. The air pressure in a tire. E. The humidity of the atmosphere.