All categories

3 years ago

The concentration of an acid or base refers to the presence of H3O+ ions in solution. true or false?

Physics

2 answers:

timofeeve [1]3 years ago

7 0

The answer is false on apex

Ira Lisetskai [31]3 years ago

7 0

Answer: The given statement is false.

Explanation:

Acids are the substances that release hydrogen or hydronium ions when dissolved in water.

For example, $HCl + H_{2}O \rightarrow H_{3}O^{+} + Cl^{-}$

Whereas bases are the substances that release hydroxide ions when dissolved in water.

For example, $NaOH \rightarrow Na^{+} + OH^{-}$

Therefore, we can conclude that the statement, concentration of an acid or base refers to the presence of H3O+ ions in solution, is false.

You might be interested in

What was the first major action Roosevelt took AFTER he was inaugurated (sworn in as president)

Marysya12 [62]

Answer:

the second one i guess????

Explanation:

7 0

3 years ago

Read 2 more answers

Object A moves with a constant velocity of -10 m/s and object B moves with a constant velocity of 5 m/s. Which object has the la

KonstantinChe [14]

8 0

3 years ago

An electric heater draws a steady 15.0A on a 120-V

morpeh [17]

Answer:

1. 1800 W

2. $ 17.3

Explanation:

From the question given above, the following data were obtained:

Current (I) = 15 A

Voltage (V) = 120 V

Time (t) = 20 h per day

Duration = 31 days

Cost = 15.5 cents per kWh

1. Determination of the power.

Current (I) = 15 A

Voltage (V) = 120 V

Power (P) =?

P = IV

P = 15 × 120

P = 1800 W

Thus, 1800 W of power is required.

2. Determination of the cost per month (31 days).

We'll begin by converting 1800 W to KW.

1000 W = 1 KW

Therefore,

1800 W = 1800 W × 1 KW / 1000 W

1800 W = 1.8 KW

Next, we shall determine the energy consumption for 31 days. This can be obtained as follow:

Power (P) = 1.8 KW

Time (t) = 2 h per day

Time (t) for 31 days = 2 × 31 = 62 h

Energy (E) =?

E = Pt

E = 1.8 × 62

E = 111.6 KWh

Finally, we shall determine the cost of consumption. This can be obtained as follow:

1 KWh = 15.5 cents

Therefore,

111.6 KWh = 111.6 KWh × 15.5 cents / 1 KWh

111.6 KWh = 1729.8 cents

Converting 1729.8 cents to dollar, we have:

100 cents = $ 1

Therefore,

1729.8 cents = 1729.8 cents × $ 1 / 100 cents

1729.8 cents = $ 17.3

Thus, it will cost $ 17.3 per month to run the electric heater.

4 0

3 years ago

What are the arrangement of resistors in series

Mama L [17]

Answer:

A chain

Explanation:

A series circuit is a circuit, where the resistors are arranged in a chain. They are aligned like this so the current only has one path to take. The current quantity is the same through each resistor.

If you ever have trouble remembering this you can think of a movie series which goes on and on and on. And remembering a parallel circuit is simpler because everything in the circuit will be parallel!

3 0

4 years ago

Read 2 more answers

A bicyclist is riding to the left with a velocity of 14 \,\dfrac{\text m}{\text s}14 s m 14, start fraction, start text, m, en

Gnesinka [82]

Answer:

-2.0 m/s²

Explanation:Acceleration is the rate of change of velocity.

\begin{aligned}a&=\dfrac{\text{Change in velocity}}{\text{Change in time}}\\ \\ &=\dfrac{v_f-v_i}{\Delta t} \end{aligned}

Change in time

Change in velocity

Δt

−v

Hint #22 / 3

We can calculate the bicyclist's acceleration from the final velocity v_fv

v, start subscript, f, end subscript, initial velocity v_iv

v, start subscript, i, end subscript, and time interval \Delta tΔtdelta, t.

\begin{aligned}a&=\dfrac{v_f-v_i}{\Delta t}\\ \\ &=\dfrac{-21\,\dfrac{\text m}{\text s}-(-14\,\dfrac{\text m}{\text s})}{3.5\,\text s}\\ \\ &=-2.0\,\dfrac{\text m}{\text s^2}\end{aligned}

Δt

−v

3.5s

−21

−(−14

)

=−2.0

Hint #33 / 3

The acceleration of the bicyclist is -2.0\,\dfrac{\text m}{\text s^2}−2.0

minus, 2, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, squared, end fraction.

5 0

3 years ago