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3 years ago

I need help it is science agian

Chemistry

1 answer:

wolverine [178]3 years ago

8 0

Answer:

Kepler- created laws of planetary motion

Galileo- discovered moons of Jupiter; published in Italian

Copernicus- revived Aristarchus heliocentric model

Explanation:

I hope this helps you! :)

Let me know if you need help with anything else.

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What kind of a system is a coffee held in a cup??<br><br>don't spam..

bagirrra123 [75]

Answer:

open system

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3 0

3 years ago

Read 2 more answers

4) 10.00 mL of sulfuric acid is neutralized in a titration using 18.54 mL of 0.100 M NaOH.

sdas [7]

Answer:

a) $H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

b) $M_{H_2SO_4}=0.0927M$

Explanation:

Hello!

In this case, for this acid-base reaction which also known as a neutralization because sulfuric acid is neutralized with sodium hydroxide, we can write the undergoing chemical reaction as shown below:

$H_2SO_4+NaOH\rightarrow Na_2SO_4+H_2O$

However, it needs to be balanced as two sodium atoms are yielded:

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

Next, since there is a 1:2 mole ratio between the acid and the base, at the equivalence point, at which the moles of acid and base are consumed, we write:

$2n_{H_2SO_4}=n_{NaOH}$

Which can also be written in terms of the given volumes and concentration of the base:

$2M_{H_2SO_4}V_{H_2SO_4}=M_{NaOH}V_{NaOH}$

In such a way, we solve for the concentration of sulfuric acid as shown below:

$M_{H_2SO_4}=\frac{M_{NaOH}V_{NaOH}}{2V_{H_2SO_4}} =\frac{18.54mL*0.100M}{2*10.00mL}\\\\ M_{H_2SO_4}=0.0927M$

Best regards!

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3 years ago

What is the most abundant chemical element in the universe?

Len [333]

hydrogen is the most

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4 years ago

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Answer:

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Explanation: hope it helps :)

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3 years ago