Accuracy/ Precision & SI units

Which of the Students was Accurate?

• Ash

• Casey

• Blake

Which of the Students was Precise?

• Ash

• Casey

• Blake

Tags

NGSS.MS-PS3-1

C₂H₅SH is burned in the presence of oxygen gas to form carbon dioxide and water. 0.7 grams of carbon dioxide should have been formed, but the reaction only produced 0.490 grams. What is the percent error of this reaction?

• 25 %

• 40 %

• 30 %

• 10 %

Tags

NGSS.MS-PS1-5

Chloric acid reacts with strontium hydroxide to form strontium chlorate and water. 80 grams of strontium chlorate should have been formed, but the reaction only produced 64.00 grams. What is the percent yield of this reaction?

• 25%

• 50%

• 75%

• 80%

Tags

NGSS.MS-PS1-5

What is the standard unit for mass?

• kg

• g

• lbs

• mg

Convert 50 km to m

• 500

• 5,000

• 50,000

• 500,000

Convert 0.085 μL into mL

• 85

• 850

• 0.000085

• 0.000000085