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jarptica [38.1K]
3 years ago
12

Which statement is true regarding a titration? It measures the amount of heat given off in combustion reactions. It determines h

ow much water to add in a dilution. It determines the concentration of an unknown substance in neutralization reactions. It determines if a reaction will take place in single replacement reactions. It is used to make a solution of designated molarity.
Chemistry
2 answers:
exis [7]3 years ago
3 0
C) It determines the concentration of an unknown substance in neutralization reactions.
pishuonlain [190]3 years ago
3 0

Answer:  It determines the concentration of an unknown substance in neutralization reactions.

Explanation: Titration is defined as the process where a solution of known concentration is used to determine the concentration of an unknown solution.

Volumetric titrations are usually used for neutralization reactions.

When an acid and base reacts to give salt and water, the reaction is called as  neutralization reaction.

The normality equation used during the titration is:

N_1V_1=V_2V_2

N_1= Normality of acid solution

V_1= volume of acid solution

N_2= Normality of basic solution

V_2= Volume of basic solution

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Point E is located at (-2, 2) and point F is located at (4-6). What is the distance between
Flauer [41]

Answer:

10

Explanation:

Given endpoints:

            E (-2,2) and F(4, -6)

To find the distance between two points;

   Use the expression below;

 D = \sqrt{(y_{2} - y_{1}  )^{2} + (x_{2} -  x_{1})^{2}  }

x₁  = -2,

x₂ = 4

y₁ = 2

y₂ = -6

  Insert the parameters and solve;

       D = \sqrt{(-6 - 2  )^{2} + (4 -+ 2)^{2}  }

      D = \sqrt{64+ 36 }   = 10

5 0
3 years ago
Match the SI unit to the quantity it measures. second gram kelvin mole ampere meter candela kilogram nanosecond mass arrowRight
Gemiola [76]

SI unit- Quantity

second- time

kilogram- mass

kelvin- temperature

ampere- electric current

S.I. Unit of time is second.

S.I. Unit of mass is kilogram.

S.I. Unit of temperature is kelvin.

S.I. Unit of electric current is ampere.

So match will be as follows:

second- time

kilogram- mass

kelvin- temperature

ampere- electric current


8 0
3 years ago
Water is made of polar molecules, and oil is made of nonpolar molecules. Based on your observations, which molecules attract eac
victus00 [196]

Based on observation of polar and non-polar molecules, polar molecules would attract each other more strongly.

<h3>What are polar and non-polar molecules?</h3>

Polar molecules are those molecules that can ionize or dissociate into their respective positive and negative ions when in an aqueous solution.

Nonpolar molecules, on the other hand, are not ionic i.e. not dissociating into ions when dissolved in water.

Polar molecules like water (H2O) contains an uneven distribution of cations (+) and anions (-), hence, would be more attracted to one another than nonpolar molecules that have an even distribution of ions.

Learn more about polarity at: brainly.com/question/16106487

#SPJ1

3 0
2 years ago
a compound containing only carbon and hydrogen produces 1.80 gCO2 and 0.738 gH2O. Find the empirical formula of the compound. Ex
r-ruslan [8.4K]

Answer:

The empirical formula is CH2

Explanation:

Step 1: Data given

Mass of CO2 produced = 1.80 grams

Mass of H2O produced = 0.738 grams

Step 2: The balanced equation

CxHy + O2 → CO2 + H2O

Step 3: Calculate moles CO2

Moles CO2 = mass CO2 / molar mass CO2

Moles CO2 = 1.80 grams / 44.01 g/mol

Moles CO2 = 0.0409 moles

Step 4: Calculate moles C

In 1 mol CO2 we have 1 mol CO2

In 0.0409 moles CO2 we have 0.0409 mol C

Step 5: Calculate moles H2O

Moles H2O = mass H2O / molar mass H2O

Moles H2O = 0.738 grams / 18.02 g/mol

Moles H2O = 0.04095  moles

Step 6: Calculate moles H

In 1 mol H2O we have 2 moles H

In 0.04095 moles H2O we have 2*0.04095 = 0.0819 moles H

Step 7: Calculate the mol ratio

We divide by the smallest amount of moles

C: 0.0409 / 0.0409 = 1

H: 0.0819 moles / 0.0409 =  2

The empirical formula is CH2

4 0
3 years ago
What happens when the temperature of a solid reaches its melting point?
Kitty [74]

Answer: The answer is B The kinetic energy breaks the bonds between atoms.

Explanation:

8 0
3 years ago
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