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noname [10]
3 years ago
15

Carrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid

, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink. What type of chemical does Carrie have?
Chemistry
2 answers:
kari74 [83]3 years ago
7 0
The color indicates that Carrie has a basic chemical.

Hope this helps!
OverLord2011 [107]3 years ago
3 0

Answer:

Alkaline/basic chemical

Explanation:

<em>Generally, an acid/base indicator is a substance that change colour based on the degree of acidity or basicity of solutions.</em>

<em>Phenolphtalein is an acid/base indicator that is usually colorless in acidic solutions and turns bright pink once the solutions become basic or alkaline.</em>

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Which type of bond is a result of the sharing of electrons between two more atoms?
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Explanation:

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8 0
3 years ago
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How many grams of NaI are needed to prepare 400.0 mL of 0.0500 M NaI solution?
Simora [160]

Answer:

3g of NaI is needed to prepare 400.0 mL of 0.0500 M NaI solution.

Explanation:

A 0.0500M solution means that is 0.0500 moles of NaI per every 1000 mL of solution. Thus, to prepare 400mL:

\frac{400mL}{1000mL}x0.0500moles=0.0200moles

Also, the molar mass of NaI is 127g/mol + 23g/mol = 150g/mol

Consequently, multiplying the molar mass of NaI by the moles the necessary mass is obtained:

150\frac{g}{mol}x0.0200moles = 3g

4 0
4 years ago
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How many liters of O₂ are needed to react completely with 10.0 L of H₂S at STP
sergiy2304 [10]

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, 10L of  H₂S should react with 6.6L of oxygen at stanadard pressure and temperature.

<h3>What is ideal gas equation?</h3>

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

P×V=n×R×T

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At Standard temperature and pressure, 2 moles of  H₂S react with 3 moles of 0₂. S0, 10L of H₂S should react with 0.66×10=6.6L of oxygen.

Therefore, 10L of H₂S should react with 6.6L of oxygen.

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7 0
1 year ago
Which of the following atoms would bond covalently?
lukranit [14]
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8 0
3 years ago
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