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3 years ago

1. Is air a mixture or a compound? mixture

Chemistry

2 answers:

Mekhanik [1.2K]3 years ago

8 0

Its mixture goodluck :)

Wewaii [24]3 years ago

7 0

The correct answer is A. Mixture

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How would the world be different if people were not aware of radioactive decay

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Answer:

everyone would die

Explanation:

if we did not know about it we would not do anything about it

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3 years ago

What specific electrophile does benzene attack when it undergoes nitration??

Deffense [45]

The reaction is as follows:
C6H6 + HNO3 + H2SO4 ------------> C6H5NO2 + H2O
(BENZENE) (NITRIC ACID)(CATALYST)
NO2(+) is the electrophile that acctacks on the benzene ring in nitration process.

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3 years ago

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3 years ago

A student placed 10.5 g of glucose (C6H12O6) in a volumetric fla. heggsk, added enough water to dissolve the glucose by swirling

aniked [119]

Answer: The mass of glucose in final solution is 0.420 grams

Explanation:

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

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$ .........(1)

Initial mass of glucose = 10.5 g

Molar mass of glucose = 180.16 g/mol

Volume of solution = 100 mL

Putting values in equation 1, we get:

$\text{Initial molarity of glucose}=\frac{10.5\times 1000}{180.16\times 100}\\\\\text{Initial molarity of glucose}=0.583M$

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

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated glucose solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted glucose solution

We are given:

$M_1=0.583M\\V_1=20.0mL\\M_2=?M\\V_2=0.5L=500mL$

Putting values in above equation, we get:

$0.583\times 20=M_2\times 500\\\\M_2=\frac{0.583\times 20}{500}=0.0233M$

Now, calculating the mass of final glucose solution by using equation 1:

Final molarity of glucose solution = 0.0233 M

Molar mass of glucose = 180.16 g/mol

Volume of solution = 100 mL

Putting values in equation 1, we get:

$0.0233=\frac{\text{Mass of glucose in final solution}\times 1000}{180.16\times 100}\\\\\text{Mass of glucose in final solution}=\frac{0.0233\times 180.16\times 100}{1000}=0.420g$

Hence, the mass of glucose in final solution is 0.420 grams

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3 years ago

PLS I NEED HELP!! Lucia wants to arrange the four states of matter from lowest kinetic energy to highest kinetic energy. How sho

masya89 [10]

Answer:

Basically, the more hot the state is, the more kinetic energy it will have. This means that answer D. would be right, as it goes from coldest to hottest states!

7 0

2 years ago

Read 2 more answers