Explorer Quiz 2

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Explorer Quiz 2

This activity contains 12 questions.

The atomic mass of an aluminum atom is 26.981539 amu. Express this mass to four significant digits.

26.99 amu26.98 amu27.00 amu26.9815 amu

8 g/mL7.73 g/mL8.0 g/mL7.7 g/mL

How many significant digits are in 725.6 mL?

1423

A metric ton is defined as 1000 kg, and an English ton is defined as 2000 lbs. Which of the following is wrong?

23 mi·h23.0 mi/h22.5 mi/h23 mi/h

Which statement about mass measurement is true?

Mass is measured using a graduated cylinder and is not affected by gravity.Mass is measured using a balance and is not affected by Earth's gravity.Both the mass and the weight of an astronaut are the same on the Moon and on Earth.Mass is the force exerted by gravity on an object and is measured using a balance.

45.16 mL + 114.7 mL + 0.835 mL = ?

161 mL161.7 mL³160.7 mL160.695 mL

Your car gets about 35 miles per gallon. If gas costs $1.10/gal, how far can you get with $21-worth of gas?

7.4 x 10² miles668 miles6.7 x 10² miles8.0 x 10² miles

Express 4623 g in scientific notation to three significant digits.

4.62 x 10³ g4.620 x 10³ g4.62 x 10^-3 g4.62 x 10² g

Express 10³ as an ordinary number.

10,000100010010

Hydrogen peroxide is commonly used as an antiseptic and for bleaching. It is available commercially as a 3.0% solution by mass of hydrogen peroxide in water. How many grams of hydrogen peroxide are in a bottle containing 250.0 grams of solution?

7.5 g hydrogen peroxide7.50 g hydrogen peroxide8.3 x 10³ g hydrogen peroxide8333 g

If 1 league is exactly equal to 3 nautical miles, 1 nautical mile is exactly equal to 6000 feet, and 1 mile is exactly equal to 5280 feet, how many miles is 20,000 leagues under the sea?

1.90 x 10¹² miles7 x 10⁴ miles11.4 miles6.00 x 10⁴ miles

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Explorer Quiz 2

The atomic mass of an aluminum atom is 26.981539 amu. Express this mass to four significant digits.

How many significant digits are in 725.6 mL?

A metric ton is defined as 1000 kg, and an English ton is defined as 2000 lbs. Which of the following is wrong?

Which statement about mass measurement is true?

45.16 mL + 114.7 mL + 0.835 mL = ?

Your car gets about 35 miles per gallon. If gas costs $1.10/gal, how far can you get with $21-worth of gas?

Express 4623 g in scientific notation to three significant digits.

Express 103 as an ordinary number.

Hydrogen peroxide is commonly used as an antiseptic and for bleaching. It is available commercially as a 3.0% solution by mass of hydrogen peroxide in water. How many grams of hydrogen peroxide are in a bottle containing 250.0 grams of solution?

If 1 league is exactly equal to 3 nautical miles, 1 nautical mile is exactly equal to 6000 feet, and 1 mile is exactly equal to 5280 feet, how many miles is 20,000 leagues under the sea?

Express 10³ as an ordinary number.