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polet [3.4K]
3 years ago
13

What's the meaning of phenolphthalein?

Chemistry
2 answers:
olchik [2.2K]3 years ago
4 0
Phenolphthalein is an indicator used in chemistry to detect acidic or basic/alkaline solutions.It is often used in the lab as an indicator used to carry out accurate titration using soluble reactants.
mrs_skeptik [129]3 years ago
4 0

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Hope this helps ya out!

-Ella :)

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Kory goes outside to grill some hamburgers. He tells Ethan that when you cook meat, a chemical reation is taking place. Ethan sa
Ray Of Light [21]

Answer:

Explanation:

Kory goes outside to grill some hamburgers. He tells Ethan that when you cook meat, a chemical reation is taking place. Ethan says "That's perpostrous!" Is Kory Correct??

absolutely Kory is correct

evidence of a chemical reaction are

new odor and or taste

change in color

signs of bubbling

direct effect of temperature on rate of change

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we observe all these when we grill meat.

7 0
3 years ago
How many grams of NaCl are in 0.50 moles of NaCl?
Semmy [17]
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7 0
3 years ago
Give me two sources of air pollution ​
Liula [17]

Answer:

Explanation:

Types of Sources

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6 0
3 years ago
A compound with the empirical formula ch2 has a molar mass of 70 g/mol. what is the molecular formula for this compound?
Rainbow [258]

The empirical formula, <span>C<span>H2</span></span>, has a relative molecular mass of

<span>1×<span>(12.01)</span>+2×<span>(1.01)</span>=14.04</span>

This means that the empirical formula must be multiplied by a factor to bring up its molecular weight to 70. This factor can be calculated as the ratio of the relative masses of the molecular and empirical formulas

<span><span>7014.04</span>=4.98≈5</span>

Remember that subscripts in molecular formulas must be in whole numbers, hence the rounding-off. Finally, the molecular formula is

<span><span>C<span>1×5</span></span><span>H<span>2×5</span></span>=<span>C5</span><span>H<span>10</span></span></span>

5 0
4 years ago
Read 2 more answers
What most likely happens when water loses heat?
astraxan [27]
If water loses heat then it will become cold and as the water becomes cold it starts forming these little bubbles around the glass. If you want extra information search up *Why are there bubbles in my water?* and it will give you the information right on the page if you're using a Google browser! Hint Hint! it has to do with nitrogen! 

~Pinkachumoo 

Which you the best! 
5 0
3 years ago
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