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DENIUS [597]
3 years ago
11

In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water. One of the products formed dur

ing the experiment was carbon dioxide. The time taken for 0.89 mL of carbon dioxide to form was recorded. A partial record of the experiment is shown. Experimental Record Flask Mass of Calcium Carbonate Volume of HCl Volume of Water Time 1 4.0 g 25 mL 0 mL 11.2 seconds 2 4.0 g 20 mL 5 mL 3 4.0 g 15 mL 10 mL 4 4.0 g 10 mL 15 mL

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
5 0

Answer:

12.8seconds, 14.6seconds, 16.4seconds

Explanation:

the answers should b right as long as it is increasing in trend.

the reason why is bc of lower vol of hcl, and higher vol of water present. there is amount of hcl molecules present per volume. lesser chance of collisions, lower rate of successful collisions to poduce CO2

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Which one is the correct answer
choli [55]
C). Viscosity

hope this helps

3 0
3 years ago
Copper(I) Iodine (cul) is often added to the table salt as a dietary source of iodine. How many moles of Cul are contained in 1.
allsm [11]

Answer:

0.238 millimoles

Explanation:

Given:

Mass of the table salt = 1.00 lb = 454 g

Copper(I) Iodine (cul) present in the table = 0.0100% by mass

or

Copper(I) Iodine (cul) present in the 1 pound of salt = 0.01% of 454 g

= 0.0454 grams

Molar mass of the CuI = 63.54 grams + 126.90 grams = 190.44 grams

Thus,

the number of moles of CuI present in 1 pound of salt = Mass / Molar mass

= 0.0454 / 190.44

= 2.38 × 10⁻⁴ moles

= 0.238 millimoles

4 0
4 years ago
Respond to the following prompt
grandymaker [24]
During photosynthesis, plants take the extra carbon from the air, make it into oxygen and then release the oxygen back into the air for us to breathe. The process of photosynthesis can help reduce global warming by removing the extra carbon in the air which allow the air levels in the atmosphere to be more balanced .
8 0
3 years ago
If I divide 6,048 by divided by 8 what does it equal
ExtremeBDS [4]
<span>If I divide 6,048 by divided by 8 what does it equal 

this </span>equals: 756
3 0
4 years ago
Why is creativity important in constructing scientific explanations?
poizon [28]

D. Sometimes it is necessary to put forth new theories to explain  experimental results,

Explanation:

Creativity is important to science because sometimes, it is necessary to put forth new theories to explain experimental results.

Theories are explanation of scientific observations.

  • Most scientists are critical and creative thinkers.
  • They must be able to come up with a wide range of possible explanation to explain their findings.
  • The explanations must be scientific in nature and not fall out of the basic tenets of this way of thinking.
  • Therefore, scientists draw from their wealth of deductive reasoning to give explanations into an observed phenomenon.

learn more:

Purpose of conducting experiments brainly.com/question/5096428

#learnwithBrainly

6 0
3 years ago
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