Energetics

In the presence of oxygen, all cells synthesize ATP via the process of cellular respiration. How can cells make ATP in the absence of oxygen?

• fermentation

• aerobic respiration

• oxidative phosphorylation

• ATP synthase

Tags

NGSS.HS-LS2-3

In what type(s) of cells does cellular respiration occur?

• Plant cells

• Plant and animal cells

• animal cells

• plant, animal and yeast cells

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Muscle soreness can be experienced during and after intense physical activity. It is typically caused by a buildup of what waste molecule?

• ethanol

• carbon dioxide

• ADP

• lactic acid

Tags

NGSS.HS-LS2-3

Which equation is correct?

• ΔH_solθ = ΔH_lattθ + ΔH_hyd^θ

• ΔH_solθ = ΔH_lattθ - ΔH_hyd^θ

• ΔH_solθ = ΔH_hyd^θ - ΔH_lattθ

Tags

NGSS.HS-PS3-1

Which equation represents lattice energy of calcium fluoride?

• Ca(s) + F₂(g)→ CaF₂(s)

• Ca²⁺(g) + 2F^-(g) → CaF₂(s)

• Ca(g) + 2F(g) → CaF₂(g)

• Ca⁺(g) + F^-(g) → CaF(g)

Tags

NGSS.HS-PS1-4

Standard enthalpy change of atomisation

• is always negative

• is always positive

• can be negative or positive

Tags

NGSS.HS-PS1-4

Standard enthalpy change of atomisation of nitrogen is

• ½(N=N bond energy)

• N≡N bond energy

• ½(N≡N bond energy)

• ⅓(N≡N bond energy)

Tags

NGSS.HS-PS1-4

Standard enthalpy change of hydration

• is always negative

• is always positive

• can be negative or positive

Tags

NGSS.HS-PS3-1

Which ion has the most negative standard enthalpy change of hydration?

• O^2-

• S^2-

• Cl^-

• Br^-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Which equation represents enthalpy change of solution calcium fluoride?

• CaF₂(s) → Ca(s) + F₂(g)

• CaF₂(s) → Ca²⁺(g) + 2F^-(g)

• CaF₂(s) + aq → Ca²⁺(g) + 2F^-(g)

• CaF₂(s) + aq → Ca²⁺(aq) + 2F^-(aq)