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navik [9.2K]
3 years ago
7

Carbon burns with oxygen to produce carbon dioxide gas. Which of these shows the correct chemical reaction? CO2 = C + O C + O =

CO2 C + O2 → CO2 C, O, CO2
Chemistry
2 answers:
gladu [14]3 years ago
7 0

Answer:

C + O2 → CO2

Explanation:

i took the test

Plz GIVE ME BRAINLIST

kiruha [24]3 years ago
4 0

Answer:

C(s) + O2(g) 》CO2 (g)

Explanation:

to check CO2 is release mix the gas with quick lime you see colour is change

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In an acid-base titration, a student uses 21.35 mL of 0.150 M NaOH to neutralize 25.00 mL of H2SO4. How many moles of acid are i
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Answer: There are 0.006 moles of acid in the flask.

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Given: V_{1} = 21.35 mL,        M_{1} = 0.150 M

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Formula used to calculate molarity of H_{2}SO_{4} is as follows.

M_{1}V_{1} = M_{2}V_{2}

Substitute the values into above formula as follows.

M_{1}V_{1} = M_{2}V_{2}\\0.15 M \times 21.35 mL = M_{2} \times 25.0 mL\\M_{2} = 0.1281 M

As molarity is the number of moles of a substance present in a liter of solution.

Total volume of solution = V_{1} + V_{2}

= 21.35 mL + 25.0 mL

= 46.36 mL  (1 mL = 0.001 L)

= 0.04636 L

Therefore, moles of acid required are calculated as follows.

Molarity = \frac{no. of moles}{Volume (in L)}\\0.1281 M = \frac{no. of moles}{0.04635 L}\\no. of moles = 0.006 mol

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