Ask question

Ask question

All categories

Liono4ka [1.6K]

4 years ago

12

Water is neutral because it contains small but equal concentrations of_ and _. Circle the correct answer. Hy

drogen, hydronium ions, hydroxide ions

1 answer:

Masja [62]4 years ago

3 0

The answer to your question is hydronium and hydroxide ions

You might be interested in

In a similar experiment, a current of 2.15 amps ran for 8 minutes and 24 seconds. The temperature of the water was 26.0°C. The v

lord [1]

Answer:

$\boxed{6.08 \times 10^{23}}$

Explanation:

Data:

I = 2.15 A

t = 8 min 24 s

T = 26.0 °C

V = 65.4 mL

p = 774.2 To

1. Write the equation for the half-reaction

2H₂O ⟶ O₂ + 4H⁺ + 4e⁻

2. Calculate the moles of oxygen

$p = \text{774.2 To} \times \dfrac{\text{1 atm}}{\text{760 To}} = \text{1.0187 atm}$

V = 0.0654 L

T = (26.0 + 273.15) K = 299.15 K

$\begin{array}{rcl}pV& = & nRT\\1.0189 \times 0.0654 & = & n \times 0.08206 \times 299.15\\0.06662 & = & 24.55n\\\\n & = & \dfrac{0.06662}{24.55}\\\\n & = & 2.714 \times 10^{-3}\\\end{array}$

3. Calculate the moles of electrons

$\text{n} = \text{2.714 $\times 10^{-3}$ mol oxygen} \times \dfrac{\text{4 mol electrons}}{\text{ 1 mol ozygen}} = \text{ 0.01086 mol electrons}$

4. Calculate the number of coulombs

t = 8 min 24 s =504 s

Q = It = 504 s × 2.10 C·s⁻¹= 1058 C

5. Calculate the number of electrons

$\text{No. of electrons} = \text{1058 C} \times \dfrac{\text{1 electron}}{1.602 \times 10^{-19}\text{ C}} = 6.607 \times 10^{21}\text{ electrons}$

6. Calculate Avogadro's number

$N_{\text{A}} = \dfrac{6.607 \times 10^{21}}{0.01086} = \mathbf{6.08 \times 10^{23}}\\\\\text{The experimental value of Avogadro's number is } \boxed{\mathbf{6.08 \times 10^{23}}}$

3 0

4 years ago

How many sodium ions in 2.00 mol of NaCl

tankabanditka [31]

1 mole of nacl has 1 mole of na ions
therefore 2 moles of nacl has 2 moles of na ions
Mole x L
= 2x6.02x10^23
=12.04 x 10^23

4 0

3 years ago

Read 2 more answers

A clasping handshake may be used as an analogy for an enzyme-catalyzed reaction because it represents the specific manner in whi

d1i1m1o1n [39]

Answer:

binds to substrate

Explanation:

4 0

3 years ago

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

mafiozo [28]

4.8 g/cm3 with sig figs since it's mass/volume you divide 76 grams by 16 cm3

6 0

3 years ago

Water is an example of a compound that is held together by what bonds

nikklg [1K]

Water is held together by hydrogen bonds.

Water molecule: H2O:
--- = hydrogen bond

O
/ \
H H ---O
/ \
H H

5 0

3 years ago