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Andru [333]
3 years ago
15

A green solution of a pH indicator was added to a sample of spring water. The resulting solution was yellow. Was the observed ch

ange due to a physical or a chemical change
Chemistry
1 answer:
adell [148]3 years ago
7 0

Answer:

Chemical Change

Explanation:

Color changes in chemical compounds are as a result of chemical reactions between the two reactant , and in this case a new reactant is been formed.

which eventually changes the color to yellow.

Indicators like Leucomalachite green do changes from green ( base) to yellow (acidic).

So for a new product to be formed which is of different color and chemical properties,the observation change is definitely a chemical change

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Please. If you’re good at this stuff shouldn’t be too bad.
Grace [21]

Answer:

im sorry im not sure

Explanation:

7 0
3 years ago
What is the molarity of a solution containing 17.0 g of KCl in 213 mL of KCl solution?
Anarel [89]

Answer:

1.070MKCl

Explanation:

So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)

Since we do not have liters in this problem, we would need to convert  milliliters to liters

<u>213 mL= 0.213 L</u>

We then see that we do not have moles, but we do have a mass, being <u>17.0 g.</u> we would need to convert these grams to moles, giving us <u>0.228 mol.</u>

Then, you would plug in <u>0.228 for your n</u>, and now you are ready to solve your original formula, plugging everything in.

M=n/L

M=0.228 mol/0.213L

M= 1.070MKCl

I know this was long, but I hope this helps (:

5 0
3 years ago
the element silver has an atomic mass of 108 u and consists of two stable isotopes silver-107 and silver-109.
DochEvi [55]

Silver-109 has a mass of 109 amu. It is one of the isotopes of the silver atm.

<h3>What are isotopes?</h3>

The term isotopes has to  do with the atoms of the same element that has the same atomic number but different mass numbers. This implies that the isotopes that we have do have the same number of protons but they do not have the same number of neutrons and the fact that they differ in the number of neutrons implies that would have the same chemical property.

We can see from the question that there are two isotopes of silver and tehse isotopes of silver have been identified as silver-107 and silver-109. The isotopes do have the same mass and not the same number of protons.

The percentage abundance of the two isotopes are not the same which means that one is more than the other. We can now see that the mass of the silver 109 in amu is 109 amu.

Learn more about atomic mass:brainly.com/question/5661976

#SPJ1

7 0
1 year ago
According to the Kinetic Molecular Theory, as the volume of an enclosed gas increases:
GarryVolchara [31]
The gas molecules bump into each other more frequently.  The gas could turn into a liquid if it is also combined with a lowered temperature.<span />
4 0
3 years ago
Read 2 more answers
What is the hydronium ion concentration of a solution whose pH is 12.40?
pochemuha
Hydronium ion concentration = 3.98×10-13
3 0
3 years ago
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