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Karolina [17]
3 years ago
13

The candle is lit and dilute ethanoic acid is poured down the inside of the beaker. As the acid reacts with the baking soda, bub

bles of CO2 gas form. After a few seconds
the air in the beaker is replaced by 0.20 liter of CO2 gas, causing candle flame to go out. The density of CO2 gas is 1.8 grams per liter at room temperature.
Choose the correct structural formula for the acid that was poured into the beaker.

Chemistry
1 answer:
nika2105 [10]3 years ago
5 0

Answer:

It’s answer #2

Explanation:

I only know this because i just got it wrong

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Calculate the concentration of all ions present in each of the following solutions of strong electrolytes. a. 0.100 mole of Ca(N
pickupchik [31]

Answer:

[Ca²⁺] = 1M

[NO₃⁻] = 2M

Explanation:

Calcium nitrate dissociates in water as follows:

Ca(NO₃)₂ ⇒ Ca²⁺ + 2NO₃⁻

The moles of Ca²⁺ can be found using the molar relationship between Ca(NO₃)₂ and Ca²⁺

(0.100mol Ca(NO₃)₂) (Ca²⁺ /Ca(NO₃)₂) = 0.100 mol Ca²⁺

The concentration of Ca²⁺  is then:

[Ca²⁺] = n/V = (0.100mol)/(100.0mL) x (1000ml)/(1L) = 1M

Similarly, moles of NO₃⁻ can be found using the molar relationship between Ca(NO₃)₂ and NO₃⁻:

(0.100mol Ca(NO₃)₂) (2NO₃⁻/Ca(NO₃)₂) = 0.200 mol NO₃⁻

The concentration of NO₃⁻ is then:

[NO₃⁻] = (0.200mol)/(100.0mL) x (1000ml)/(1L) = 2M

6 0
3 years ago
{Plz answer} Thank you!
Dafna11 [192]

The Answer to your question would be A

8 0
3 years ago
Read 2 more answers
Why are leaves different colors?
Marina86 [1]
<span>Why are leaves different colors?</span><span>
The chlorophyll breaks down</span>
6 0
3 years ago
PLEASE HELP I'M SO DOOMED
BartSMP [9]

Answer:

D

Explanation:

31 / 2.8 = 11.0714286 L per mole of helium

3.5 / 4 = 0.875 moles

2.8 + 0.875 = 3.675 moles

11.0714286 x 3.675 = 40.6875 L

3 0
3 years ago
How is hydrogen in heavy water different from hydrogen in normal water?
tatyana61 [14]

Answer:

I'd say the correct answer is A

Explanation:

hope this helps:)

sorry if its wrong:(

6 0
3 years ago
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