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4 years ago

Sentences with biocycle

1 answer:

4 0

Associating the need of surgeon in practice , we write a software of human body biocycle law . this software can provide a science reliance in the time selection of surgical operation plan to the main surgeon
(just an example^)

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What volume of 3.00 MM HClHCl in liters is needed to react completely (with nothing left over) with 0.750 LL of 0.500 MM Na2CO3N

AlladinOne [14]

Answer: The volume of HCl needed is 0.250 L

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$

For sodium carbonate:

Molarity of sodium carbonate solution = 0.500 M

Volume of solution = 0.750 L

Putting values in above equation, we get:

$0.500M=\frac{\text{Moles of sodium carbonate}}{0.750}\\\\\text{Moles of sodium carbonate}=(0.500mol/L\times 0.750L)=0.375mol$

The chemical equation for the reaction of sodium carbonate and HCl follows:

$Na_2CO_3+2HCl\rightarrow 2NaCl+H_2CO_3$

By Stoichiometry of the reaction:

1 mole of sodium carbonate reacts with 2 moles of HCl

So, 0.375 moles of sodium carbonate will react with = $\frac{2}{1}\times 0.375=0.750mol$ of HCl

Now, calculating the volume of HCl by using equation 1:

Moles of HCl = 0.750 moles

Molarity of HCl = 3.00 M

Putting values in equation 1, we get:

$3.00M=\frac{0.750mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.750mol}{3.00mol/L}=0.250L$

Hence, the volume of HCl needed is 0.250 L

8 0

3 years ago

2. Without energy there can be no

vlada-n [284]

Answer:

Existence

Explanation:

Energy is required for anything to occur, without it there would be no 'causality' for things to change from one moment to the next.

Hope this helped!!!

3 0

3 years ago

Read 2 more answers

Which term identifies the dark smooth areas on surface of the moon

ivann1987 [24]

The dark smooth areas on the surface of the moon is called Maria.

Maria is made up of solidified lava which is a result of volcanic activity on the moon.

When Galileo observed these smooth dark spots on the moon he called them 'mare' which is latin for 'sea'. And the plural form of mare is 'maria'. Unlike Galileo predictions, recent investigations confirm that maria are not oceans but solidified lava.

4 0

3 years ago

Read 2 more answers

What would be the observation and conclusion when blue and red litmus paper is dipped in H2SO4

rjkz [21]

Answer:

When Blue litmus is put in sulphuric acid it changes red .

And red litmus doesn't changes..

Conclusion Acid changes blue ltmus to red.

3 0

3 years ago

What role does potassium iodide play in generating oxygen

Zielflug [23.3K]

Potassium iodide will act as the catalyst to decompose hydrogen peroxide into water and oxygen. A catalyst is a substance that participates in a chemical reaction and influences its speed without undergoing permanent change.

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4 years ago