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Anit [1.1K]
2 years ago
9

Complete the sentence using ide, ate or Ic. To determine the name of an anion, you take the name of its element and replace the

end with
Chemistry
1 answer:
lara31 [8.8K]2 years ago
8 0

To determine the name of an anion, you take the name of its element and replace the end with "ide".

<h3>What is an anion?</h3>

An anion in chemistry is a negatively charged ion.

Anions are usually formed when a non-metallic atom gains electron(s).

An anion is usually named by taking the elemental name, removing the ending, and adding “ide.

Examples of anions are as follows:

  • fluoride (F-)
  • Chloride (Cl-)
  • Iodide (I-)

Learn more about anions at: brainly.com/question/15578817

#SPJ1

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Suppose 20.23 g of glucose are dissolved in 95.75 g of water at 27.0 OC. Glucose is nonvolatile (has no vapor pressure) and has
leonid [27]

Answer:

Explanation:

From the information given :

we can understand the solute is glucose and the solvent is water,

So, the weight of glucose = 20.23 g

the molecular weight of glucose = 180.2 g/mol

weight of water = 95. 75 g

the molecular weight of water = 18.02 g/mol

pure vapor pressure of water P_A = 26.7 \ mmHg at 27°C

moles of glucose = weight of glucose/ molecular weight of glucose

= 20.23/180.2

= 0.11 mole

moles of water =  weight of water / molecular weight of water

= 95.75/18.02

= 5.31 mole

mole fraction of glucose X_{glucose} = (moles of glucose)/(moles of glucose+ moles of water)

X_{glucose} = 0.11/(0.11 + 5.31)

X_{glucose} =  0.0203

mole fraction of glucose X_{water} = (moles of water)/(moles of water+ moles of glucose)

X_{water} = 5.31/ (5.31 + 0.11)

X_{water} =  0.9797

Using Raoult's Law:

P_S = P^0_A \times X_A \  \ \  OR  \  \ \  P_A = P^0_A \times X_A

where:

P_S = vapor pressure of the solution

P_A = total vapor pressure of the solution

P^0_A= vapor pressure of the solvent in the pure state

X_A = mole fraction of solvent i.e. water

P_A = 95.75 ×  0.9797

P_A =  93.81 mmHg

the total vapor pressure of the solution = 93.81 mmHg

4 0
3 years ago
What is an absorption spectrum?
Natasha2012 [34]
Answer: option A. the colors absorbed when an element gains energy.

Justification:

The electromagnetic waves, visible light included, consists of a gamma of waves with different frequencies and wavelengths.

The visible light can be decomposed in a set of series of lines of light with different frequencies and that decomposition is what a spectrum of light is. Each series correspond to a color.


The atoms can absorb and emit photons. That is, atoms can absorb and release energy.

When the atom abosorbs a photon an electron gets excited ( the electron gains energy).

The light absorbed, then, corresponds to color absortion, and the spectrum of absortion is the colors absorbed by the atom when its electrons gain energy by the absortion of photons (light).
5 0
3 years ago
Which of the following mixtures would result in a buffered solution when 1.0 L of each of the two solutions are mixed?
drek231 [11]

Answer:

c. 0.2 M HNO₃ and 0.4 M NaF .

Explanation:

A buffer is defined as the mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

A weak acid or weak base are defined as an acid or base that partially dissociates in aqueous solution. in contrast, a strong acid or base are acids or bases that is dissociated completely in water.

Thus:

a. 0,2M HNO₃ and 0.4 M NaNO₃. This is a mixture of a strong acid with its conjugate base. <em>IS NOT </em>a buffer.

b. 0.2 M HNO₃ and 0.4 M HF . This is a mixture of two strong acids. <em>IS NOT </em>a buffer.

c. 0.2 M HNO₃ and 0.4 M NaF . NaF is the conjugate base of a weak acid as HF is.

The reaction of HNO₃ with NaF is:

HNO₃ + NaF → HF + NaNO₃

That means that in solution you will have a weak acid (HF) with its conjugate base (NaF). Thus, this mixture <em>IS </em>a buffer.

d. 0.2 M HNO₃ and 0.4 M NaOH. This is the mixture of a strong acid with a strong base, thus, this <em>IS NOT </em>a buffer.

I hope it helps!

7 0
3 years ago
Consider a simple reaction in which a reactant AA forms products: A→productsA→products What is the rate law if the reaction is z
levacccp [35]

Answer :

The rate law expression for zero order reaction will be:

Rate=k[A]^0

The rate law expression for first order reaction will be:

Rate=k[A]^1

The rate law expression for second order reaction will be:

Rate=k[A]^2

Zero order reaction : There is no affect on the rate law.

First order reaction : The rate law becomes doubled.

Second order reaction : The rate law becomes quadrupled.

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The given reaction is:

A\rightarrow Products

The rate law expression for zero order reaction will be:

Rate=k[A]^0

The rate law expression for first order reaction will be:

Rate=k[A]^1

The rate law expression for second order reaction will be:

Rate=k[A]^2

Now we have to determine that if doubling of the concentration of A then the rate of reaction will be:

As we know that the zero order reaction does not depend on the concentration of reactant. So, there is no affect on the rate law.

As we know that the first order reaction depend on the concentration of reactant. So, the rate law becomes doubled.

As we know that the second order reaction depend on the concentration of reactant. So, the rate law becomes quadrupled.

5 0
4 years ago
Which elements are rarely found in organic molecules
Marizza181 [45]

Answer:

k

Explanation:

6 0
3 years ago
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