Identify Acid-base and conjugate acid-base pair in the following: HCOOH + H20 --> HCOO + H3O+ *​

Answer:

hey,the answer is d, 1:2

Answer: D

Explanation:

The equation shows that one mole of nitrogen reacted with three moles of hydrogen to produce two moles of ammonia.

Answer:  Molecular Formula is C5H5

Explanation:   M(CH) = 13.018 g/mol

 Empirical formula of compound is (CH)x in which x = 2,3,4,...

   Molar mass of the substance is 65 g.   x = 65 g/mol : 13 g/mol = 5

Answer: The balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.

Explanation:

A chemical reaction in which single compound is decomposed into two or more species is called a decomposition reaction.

For example, [tex]NaNO_{3}(s) + Heat \rightarrow NaNO_{2}(s) + O_{2}(g)[/tex]

As the compound [tex]NaNO_{3}[/tex] is decomposing to given two different substances. So, it is a decomposition reaction.

Here, the number of atoms on reactant side are as follows.

The number of atoms on product side are as follows.

To balance this equation, multiply [tex]NaNO_{3}[/tex] by 2 on reactant side and multiply  [tex]NaNO_{2}[/tex] by 2 on product side. Therefore, the equation will be rewritten as follows.

[tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex]

Here, number of atoms on reactant side are as follows.

The number of atoms on product side are as follows.

Hence, this equation is balanced.

Thus, we can conclude that the balanced chemical equation is [tex]2NaNO_{3}(s) + Heat \rightarrow 2NaNO_{2}(s) + O_{2}(g)[/tex] and it is a decomposition chemical reaction.

Answer:

An acid because they donate H^+ ions

Explanation:

Let us look at the equation again;

H2SO3 + H2O « H3O+ + HSO3-

An acid donates hydrogen ion while a base accepts hydrogen ion. Hence, we have to look at which species that acted as hydrogen ion donors or acceptors.

We can clearly see that H2SO3 acted as a hydrogen ion donor while H2O acted as a hydrogen ion acceptor.

Thus, H2SO3  acted as an acid by donating hydrogen ions.

Answer:

Fe2O3 + C → 2Fe + CO3

Explanation:

The unbalanced equation given in this question is as follows:

Fe2O3 + C → Fe + C03

To balance this equation, one should ensure that the number of atoms of each element on both sides of the equation is equal. The balanced equation is as follows;

Fe2O3 + C → 2Fe + CO3

N.B, there are;

- 2atoms of Fe on both sides

- 1 atom of C on both sides

- 3 moles of O on both sides

Answer:

9

[tex]4X \: + \: 3Y _{2} \: → \: 2X _{2} Y _{3}[/tex]

Sum = 4+3+2

=9

Answer:

Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. For a smooth surface, reflected light rays travel in the same direction.

Explanation:

Answer:

....

Explanation:

Answer:

Tropical storm

Explanation:

The tropical storm have the most rainfall because tropical winds will increase in strength as temperatures rise. With the increase in temperature, the tropical storms have stronger winds which leads to produce higher rainfall. There is a direct relationship between temperature and amount of rainfall. As the temperature increases, the tropical storms have stronger winds which leads to more rainfall while on the other hand, decrease in temperature decrease the strength of the tropical storm's winds that leads to lower rainfall.

The temperature given shows that the storm that will be predicted is a tropical storm.

It should be noted that temperature means the degree of hotness or coldness in a body.

In this case, since the temperature of the areas surrounding Kochi before each storm was about 10°C and there was the same amount of water vapor in the air, the appropriate storm is a tropical storm.

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Explanation:

Greenhouse gases are gases in Earth's atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere.

here's your solution

==> distance covered = 6 km

==> time taken = 30 min

==> time in hour = 30/60 = 1/2hr

= speed = distance/time

==> speed = (6)/(1/2)

==> speed = 12 km/hr

hope it helps

When a dog run 6 km in 30 minutes then dogs average speed will be 12 km/h.

The average speed of something is computed by dividing the number distance travelled by the total time it took to travel that distance. Average speed can be determined by the formula:

V=d/T

where, V is average speed , d is distance and T is time.

It is given that , d= 6 km and T= 30 minutes(0.5 h).

Calculation of average speed is show below:

Now, puts the value of given data in average speed formula.

Average speed(V )= 6/ 0.5 = 12 km/h

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Answer:

number of neutrons = mass number - number of protons

Answer:

[tex]4molNH_3[/tex]

Explanation:

Hello there!

In this case, according to the given information it will be firstly necessary to set up the chemical equation taking place:

[tex]N_2+3H_3\rightarrow 2NH_3[/tex]

We infer we need to calculate the moles of NH3 by using both of the moles of N2 and H2 at the beginning, in order to identify the limiting reactant:

[tex]n_{NH_3}=6molN_2*\frac{2molNH_3}{1molN_2}=12molNH_3\\\\ n_{NH_3}=6molH_2*\frac{2molNH_3}{3molH_2}=4molNH_3\\[/tex]

Thus, since hydrogen yields the fewest moles of ammonia, we conclude that we are just able to yield 4 moles of NH3.

Regards!

Answer:

.496 M .

Explanation:

15.5 mL of .8 M NaOH will contain .0155 x .8 moles of  NaOH

moles of  NaOH = .0124 moles

For neutralization,  moles contained by 25 mL of HCl  = .0124

Hence molarity of HCl = .0124 / .025

= .496 M .

0.496 M is the molarity of an HCl solution if 25.0 mL of the solution is neutralized by 15.5 mL of 0.800 M NaOH.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

Molarity = [tex]\frac{Moles \;solute}{Volume of solution in litre}[/tex]

15.5 mL of 0.8 M NaOH will contain 0.0155 x 0.8 moles of  NaOH

Moles of  NaOH = 0.0124 moles

For neutralization,  moles contained by 25 mL of HCl  = 0.0124

Hence molarity of HCl = [tex]\frac{0.0124}{0.025}[/tex]

= 0.496 M .

Hence,  0.496 M is the molarity of an HCl solution if 25.0 mL of the solution is neutralized by 15.5 mL of 0.800 M NaOH.

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Answer: Mn3C is the corrects answer

Trust me :)

Answer:

Las fuentes secundarias son testimonios de segunda mano elaborados con posterioridad a los hechos ocurridos y basados en la información de las fuentes primarias, por ejemplo: libros y revistas, películas, video-documentales, series televisivas, textos escolares y mapas temáticos.

Answer:

Las fuentes de luz secundarias son aquellas que reflejan la luz que produce otra fuente. Por ejemplo: la luz de la luna (refleja la luz que produce el Sol), un espejo.

Explanation:

Answer:

0.055M

Explanation:

Using the formula as follows:

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Cb = concentration of base (M)

Va = volume of acid (mL)

Vb = volume of base (mL)

According to the information given in this question, Ca (HCl) = ?, Cb (NaOH) = 0.150, Va (HCl) = 86.30mL, Vb (NaOH) = 31.75mL

Using CaVa = CbVb

Ca = CbVb ÷ Va

Ca = (0.150 × 31.75) ÷ 86.30

Ca = 4.7625 ÷ 86.30

Ca = 0.055M

Answer:

a

Explanation:

Answer: Most likely around the knob area or by the bolts that hold the door up.

Explanation:

If you attempted to pry open a locked window with a screwdriver, the screwdriver would leave a tool mark on the window and windowsill.

The impressions made by a tool when it comes in contact with an object are called as tool marks. These tool marks exhibit a variety of impressions depending upon the type of tool, its shape and its use. They are classified into different types depending upon the force with which they are made.

The study of tool marks is very useful in forensic science which includes information about the analysis of tool marks at the crime scene and in the laboratory, the interpretation and assessment of challenges for examination and interpretation and also the way in which tool mark evidence can be presented in a courtroom.

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Answer:

2.0371352212585085

Explanation:

Answer:

D

Explanation:

Answer:

B. metalloids

Explanation:

The metalloids are found between metals and non-metals on the periodic table.

Metalloids have properties between those of metals and non-metals. Under certain prevalent conditions, they exhibit a set of properties.

Synthetic substances are those artificially made, they are not found on the periodic table.

Noble gases are found in the last group on the periodic table.

Radioactive substances are found in the lanthanide and actinide series.

Answer:

b i think im not fully sure

Explanation:

Answer:

C- Both isolation and low population

Explanation:

90 percent sure

Answer:

amını sike bilirim tabi verirsen

Answer: The specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].

Explanation:

Given: Mass = 225 g

Change in temperature = [tex]13^{o}C[/tex]

Heat energy = 1363 J

The formula used to calculate specific heat is as follows.

[tex]q = m \times C \times \Delta T[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat

[tex]\Delta T[/tex] = change in temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times \Delta T\\1363 J = 225 g \times C \times 13^{o}C\\C = \frac{1363 J}{225 g \times 13^{o}C}\\= 0.466 J/g^{o}C[/tex]

Thus, we can conclude that the specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].