Chemestry Unit 4 wksht 4

What is the percent composition by mass of oxygen in the sugar cane sample?

• 42.2%

• 6.5%

• 51.3%

• 53.35%

Tags

NGSS.HS-PS1-7

What is the percent composition by mass of hydrogen in the corn syrup sample?

• 6.5%

• 6.65%

• 5.0%

• 95.0%

In the compound of hydrogen and fluorine, what is the percent by mass of fluorine?

• 5.0%

• 95.0%

• 6.5%

• 53.35%

What mass of hydrogen would be present in a 50 g sample of the hydrogen and fluorine compound?

• 2.5 g

• 5.0 g

• 10.0 g

• 25.0 g

Tags

NGSS.HS-PS1-7

In a 500.0 g sample of sugar cane, how many grams of carbon are present?

• 211.0 g

• 32.5 g

• 256.5 g

• 80.0 g

Tags

NGSS.HS-LS1-6

What is the percent composition by mass of hydrogen in sucrose?

• 6.5%

• 42.2%

• 51.3%

• 6.65%

Tags

NGSS.HS-PS1-7

In a 1.0 g sample of hydrogen reacting with fluorine, what is the total mass of fluorine used?

• 19.0 g

• 1.0 g

• 50.0 g

• 32.5 g

What is the ratio of the mass of oxygen to the mass of hydrogen in Compound II?

• 4.0

• 8.0

• 12.0

• 16.0

Tags

NGSS.HS-PS1-7

Why are the compounds not the same?

• They have the same mass ratios.

• The atoms must combine in different ratios.

• They have the same elements.

• They have the same formulas.

Tags

NGSS.HS-PS1-3

What is significant about the mass ratios in the compounds?

• They are equal.

• Compound I has more oxygen.

• Compound II has twice the oxygen as Compound I.

• Compound I has twice the oxygen as Compound II.