Which substance is a strong electrolyte?<br> O NH3<br> O Ba(OH)2<br> O C12H22011<br> O CH3COOH

According to collision theory, which of the following statements explain why an increase in temperature increases the rate of a

Scilla [17]

Answer:

The reactant particles have a greater average kinetic energy.

A smaller fraction of the reactant particles have energy greater than the Ea.

8 0

3 years ago

The atomic radii of a divalent cation and a monovalent anion are 0.62 nm and 0.121 nm, respectively. (a) Calculate the force of

Zepler [3.9K]

Answer:

$\boxed{8.4\times 10^{-10} \text{ N}}$

Explanation:

The formula for the force exerted between two ions is

$F = \dfrac{kq_{1}q_{2}}{r^{2}} = \dfrac{kz_{1}z_{2}e^{2}}{r^{2}}$

where the Coulomb constant

k = 8.988 × 10⁹ N·m·C⁻²

Data:

z₁ = +2; r₁ = 0.62 nm

z₂ = -1; r₂ = 0.121 nm

Calculations:

r = r₁ + r₂ = 0.62 + 0.121 = 0.741 nm

$F =\dfrac{8.988 \times 10^{9} \text{ N $\cdot$ m$^{2} \cdot$ C$^{-2}$} \times 2 \times (-1) \times ( 1.602 \times 10^{-19} \text{ C})^{2}}{(0.741 \times 10^{-9} \text{ m})^{2}}\\\\ = -\mathbf{8.4\times 10^{-10}} \textbf{ N}\\\text{The attractive force between the ions is } \boxed{\mathbf{8.4\times 10^{-10}} \textbf{ N}}$

3 0

3 years ago

When H 2SO 4 is neutralized by NaOH in aqueous solution, the net ionic equation is ________. SO42- (aq) 2Na (aq) Na2SO4 (aq) SO4

puteri [66]

Answer:

2H+ + SO4^2- +2Na+ + 2OH- ------------> 2Na+ + SO4^2- + 2H2O

Explanation:

In writing ionic reaction equations, we omit spectator ions, that is, ions that do not participate actively. Both the reactants and products are broken up into their constituent ions and a balanced equation involving ions only is written. Ionic equation balance usually require good knowledge of the reaction and nature of the reactants The dissolved compounds only are written as ions.

6 0

3 years ago

Please help me with this science question

elena55 [62]

Answer:

TRUE

Explanation:

The youngest rocks on the ocean floor are located at the oceanic ridge, an underwater mountain range formed from the spreading of tectonic plates

5 0

3 years ago

Read 2 more answers

I need D and E please I know the rest