Chemistry Test 2

The simplest ratio of atoms in a compound it its ?????????

• empirical formula
• formula weight
• molar mass
• molecular formula

Tags

NGSS.MS-PS1-1

The empirical formula of C₁₂H₃₆N₄ is ?????????

• CHN
• C₂HN

• C₂H₄N

• C₃H₉N

The name of the binary molecular compound N₂O₅ is ??????????

• dinitrogen pentoxide
• pentanitrogen dioxide
• mononitrogen pentoxide
• pentanitrogen monoxide

Tags

NGSS.MS-PS1-1

O₂^2- is the formula for ?????????

• hydrogencarbonate
• nitrite
• peroxide
• sulfate
• sodium

Tags

NGSS.HS-PS1-1

NO₂^- is the formula for ?????????

• hydrogencarbonate
• nitrite
• peroxide
• sulfate
• sodium

Tags

NGSS.MS-PS1-1

SO₄^2- is the formula for ????????

• hydrogencarbonate
• nitrite
• peroxide
• sulfate
• sodium

HCO₃^- is the formula for ?????????

• hydrogencarbonate
• nitrite
• peroxide
• sulfate
• sodium

Tags

NGSS.MS-PS1-1

A compound formed by K⁺ and S^2- is named potassium sulfide. Is this correct? Why or why not?

• Incorrect; the name should include prefixes to indicate the number of atoms.
• Correct; the name is the anion followed by the cation.
• Correct; the name is the cation followed by the anion.
• Incorrect; the name should include prefixes to indicate the charge.

Tags

NGSS.MS-PS1-1

Arsenic trifluoride has the formula ??????????

• AsF₃

• Ca₃P₂

• FeF_{2 ^.} 4H₂O

• NH₄C₂H₃O₂

Tags

NGSS.MS-PS1-1

Iron(II) fluoride tetrahydrate has the formula ??????????

• AsF₃

• Ca₃P₂

• FeF_{2 ^.} 4H₂0

• NH₄C₂H₃O₂

Tags

NGSS.MS-PS1-1