All categories

2 years ago

Which of the following is an acid-base neutralization reaction?

Chemistry

1 answer:

ZanzabumX [31]2 years ago

8 0

Answer:

Explanation:

Answer: D

STRONG ACIDS:

HBr

HCl

HNO3

HClO4

H2SO4

You might be interested in

A mixture of gases with a pressure of 800.0 mm hg contains 60% nitrogen and 40% oxygen by volume. what is the partial pressure o

klasskru [66]

Hello!

We have the following statement data:

Data:
$P_{Total} = 800 mmHg$
$P\% N_{2} = 60\%$
$P\% O_{2} = 40\%$
$P_{partial} = ? (mmHg)$

As the percentage is the mole fraction multiplied by 100:

 $P = X_{ O_{2} }*100$

The mole fraction will be the percentage divided by 100, thus:
What is the partial pressure of oxygen in this mixture?

$X_{ O_{2} } = \frac{P}{100}$
$X_{ O_{2}} = \frac{40}{100}$
$\boxed{X_{ O_{2}} = 0.4}$

To calculate the partial pressure of the oxygen gas, it is enough to use the formula that involves the pressures (total and partial) and the fraction in quantity of matter:

In relation to $O_{2}$ :

$\frac{P O_{2} }{P_{total}} = X_O_{2}$
$\frac{P O_{2} }{800} = 0.4$
$P_O_{2} = 0.4*800$
$\boxed{\boxed{P_O_{2} = 320\:mmHg}}\end{array}}\qquad\quad\checkmark$

Answer:
b. 320.0 mm hg

7 0

3 years ago

List the three requirements for a correctly written chemical equation.2. Give one example of a word equation, one example of a f

erma4kov [3.2K]

Answer:

Requirements for a correctly written chemical equation are reactants and products, their formula and valency

Explanation:

Formula of the given compound are -

1 - Potassium Hydroxide - $KOH$

2 - Calcium Nitrate - $Ca(NO_3)_2$

The requirements for a correctly written chemical equation are -

Identifying reactants and products
Formula of reactants and products
Valency of elements

Example of word equation, formula equation, and chemical equation is as follows -

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron (word equation)

$Al_(_s_)$ + $Fe_2O_3_(_s_)$ ⇒ $Al_2O_3_(_s_)$ + $Fe_(s)$ (formula equation)

$2Al_(_s_)$ + $Fe_2O_3_(_s_)$ ⇒ $Al_2O_3_(_s_)$ + $2Fe_(_s_)$ (chemical equation)

8 0

2 years ago

A car driver accelerates to a speed of 35 mph and then takes her foot off the gas pedal. Even though she does not press the brak

RSB [31]

The list of options to answer this question is:

A.kinectic energy is transformed into thermal energy.

B.electrical energy is transformed into potential energy.

C.potential energy is transformed into kinectic energy.

D.mechanical energy is transformed into chemical energy.

The answer is the option A. A.kinectic energy is transformed into thermal energy.

As you know energy cannot be lost but transformed.

When friction force acts over the tyres it increases the speed of the particles in the tyres which is thermal energy, this thermal energy increase comes from kinetic energy loss.

7 0

3 years ago

What is the best description of the Bohr model of the atom?

zheka24 [161]

The best description of the Bohr model of the atom is that the atom consists of a nucleus with electrons orbiting at specific energy levels. Absorbed photons cause electrons to jump between energy levels. The answer is letter C.

4 0

3 years ago

How did Bohr describe the arrangement of particles within an atom?

alexandr1967 [171]

Answer: A

Explanation: Protons and neutrons form the nucleus of the atom, with electrons orbiting it.

4 0

2 years ago

Read 2 more answers