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avanturin [10]
3 years ago
14

How far does Mrs. Spencer live if she drives home with a speed of 1.5 kilometers and it takes her 25 minutes to get home? It’s f

or Science plzz help
Chemistry
1 answer:
lora16 [44]3 years ago
4 0
I belive you’ve written it wrong could u comment it correctly
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A chemist prepares a solution of iron chloride by measuring out 0.10 g of FeCl2 into a 50. mL volumetric flask and filling to th
Tanya [424]

<u>Answer:</u> The molarity of anions (Cl^-) in the solution is 0.0316 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Given mass of iron (II) chloride = 0.10 g

Molar mass of iron (II) chloride = 126.75 g/mol

Volume of solution = 50 mL

Putting values in above equation, we get:

\text{Molarity of iron (II) chloride}=\frac{0.10\times 1000}{126.75\times 50}\\\\\text{Molarity of iron (II) chloride}=0.0158M

1 mole of iron (II) chloride produces 1 mole of Fe^{2+} ions and 2 moles of Cl^- ions

So, concentration of chloride ions (anions) in the solution = (2\times 0.0158)=0.0316M

Hence, the molarity of anions (Cl^-) in the solution is 0.0316 M

7 0
3 years ago
A property of a substance that is the same no matter what size of sample is tested is _____.
KengaRu [80]

Answer:

B.) an intensive property

Explanation:

Bc it is a Characteristic Property that won't change no matter what size of sample is tested

6 0
3 years ago
Classify each of the following as a Strong acid (sa) or a Weak acid (wa) and indicate how each should be written in aqueous solu
ziro4ka [17]

Answer:

1. nitric acid: sa

2. perchloric acid: sa

3. hydrofluoric acid: wa

Explanation:

A strong acid (sa) is the one that is completely dissociated into ions in water. Conversely, a weak acid (wa) is not completely dissociated in water.

From the options, the strong acids are:

1. nitric acid (HNO₃). It dissociates completely into ions when is dissolved in water, as follows:

HNO₃ → H⁺ + NO₃⁻

2. perchloric acid (HClO₄). It is completely dissociated in water as follows:

HClO₄ → H⁺ + ClO₄⁻

The weak acid is hydrofluoric acid (HF). In water, only a small proportion is dissociated into ions. The proportion of ions formed is given by the equilibrium constant Ka. The dissociation is written by using double arrows:

HF ⇄ H⁺ + F⁻

4 0
3 years ago
Select all the correct answers.<br> What does an increase in the temperature of air indicate?
lora16 [44]

Answer:

a.the air has less thermal energy so that the temperature increases

5 0
4 years ago
Protons and neutrons are composed of<br><br>quarks<br><br>molecules<br><br>ions <br><br>electrons​
belka [17]

Answer:

A) i think !!!!!!!!

Explanation:

3 0
3 years ago
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