Mass of Magnesium moles of magnesium = moles of H₂ mass of magnesium = moles of magnesium x (24.31 g/mol) Percent Error Percent Error= I(mass of magnesium from H₂)-(mass of magnesium from balance) | (mass of magnesium from balance) Record the percent error for each run on the RESULTS sheet. DATA Make sure to use correct significant figures and units of measure. 747 MM barometric pressure: Run 1 mass of magnesium strip: temperature of water: 16.48° volume of H₂ gas: 62ML height of water column: 230 ML 58 Run 2 g Run 2 mass of magnesium strip: 0.53g temperature of water: 1648° volume of H₂ gas: M( height of water column: 270 ML Run 3 mass of magnesium strip: 061 temperature of water: 16.480 59ML volume of H₂ gas: height of water column: 250ML 23 X 10 = 230 27 Xlos 270 * 100% ·08211004.481-00-11 vapor pressure of water: 16.48 vapor pressure due to water column: 19.853 mmHg 0.935L MMH pressure of H₂: O. 1000 volume of H₂: 0,065 +273 temperature of H₂:289.48 moles of H₂:0 mass of Mg: percent error: (0.935) (0.065) (0.0821) (289.48) = 8,0025 y betwe

A volumetric buret should always be read to _______ decimal places.

Which of the following methods would be the most accurate process for delivering 20 mL of a liquid? Select one: a. using a 20 mL beaker b. using a 20 mL volumetric pipette c. using a 25 mL graduated cylinder d. using a 1 mL autopipette and measuring 1 mL twenty times

If I add 15mL of water to 8 grams of sugar in a volumetric flask, then swirl it to dissolve the sugar. Then add more water up to the 25 mL line, what is my total volume. I have the weight of the flask before and after as well.

Be sure to answer all parts. There are two parts in this problem. Report the quantity being measured to the appropriate number of significant figures. Part 1 out of 2 (a) Volume of liquid mL 1 attempt left 50mL 40 30 20 10 Check my work Next part

Review & Preview Drag and drop the appropriate conversions to solve the following problem: 1 mile 1 foot 5280 feet 12 inches 5280 feet 12 inches 1 mile 1 foot 10 km You're going to run a "10k" next month. A "10k" is a distance of 10 kilometers. How many miles will you run? You'll need these: 1000 m 1 km 1 km 1000 m 1 m 100 cm 100 cm 1 m 2.54 cm 1 inch 1 inch 2.54 cm miles

To make a 300mL of 3% NaCl, weigh ______ grams of NaCl, place in a graduated cylinder, and add water to make the total volume ______ mL. To make a 20mL of 10% NaCl, weigh ______ grams of NaCl, place in a graduated cylinder, and add water to make the total volume ______ mL. To make a 4L of 0.5% NaCl, weigh ______ grams of NaCl, place in a graduated cylinder, and add water to make the total volume ______ mL.

Match each pair of temperatures correctly. Drag statements on the right to match the left. 5°C 41°F 303 K 86°F -35°C 238 K Do you know the answer? I know It Think so Unsure No idea

When we say that a Class A 25.00 mL pipet has a tolerance of 0.030 mL, what does that mean?

RESET Cancel Done Convert 5.890×10³ kg to ug: