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Alina [70]
2 years ago
14

Why are bubbles and precipitates both signs of chemical change

Chemistry
1 answer:
BartSMP [9]2 years ago
8 0

Answer:(I didn’t really know where to Wrigh-)

Explanation: Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas. The chemical change that creates the gas is completed after the gas bubbles leave the mixture.

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Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you t
Lelu [443]

Answer:

Sample A - mixture

Sample B- Mixture

Explanation:

Looking at sample A, we can see that as water was poured over sample A, the sample was separated into its components as the powder disappeared leaving behind a gritty black sand-like material on the surface of the paper. A separation of the mixture has taken place.

In sample B, we can clearly see that it is a mixture because the amount of solid recovered is much less than the total mass of the solid put into the beaker. The sample must have been separated into its components.

8 0
3 years ago
Check the box under each molecule in the table below that is an isomer of this molecule:
iris [78.8K]

The branched alkanes in boxes two and three all have molecular formula C6H14 and are isomers of the compound shown.

Isomers are compounds that has the same molecular formula but different structural formulas. Hence, isomers of compounds can be represented by the same molecular formula since they contain the same number of each atom.

The molecule shown has molecular formula C6H14. The branched alkanes in boxes two and three all have molecular formula C6H14 and are isomers of the compound shown.

Learn more about isomers: brainly.com/question/1558338

6 0
2 years ago
1.name the gas produced by the reaction between calcium carbonate and dilute hydrochloric acid?
GuDViN [60]
I dont know anything about this since i am not in college or high school i am in Middle school but I hope I will learn it
4 0
3 years ago
Which of these describes the function of the urinary System A:aids in reproduction B:breaks down solid food C:stores important n
alexgriva [62]

Answer:

Urinary system here is best described as:

D. regulates fluid balance and eliminates waste.

Explanation:

  • The major functional organ i.e.our kidney is responsible and is the major functional organ that carry out the urine out of the body.
  • The functional unit of kidney is nephron.
  • The functional system of urinary system is also been named as Renal system which works in the order of producuing, storing and eliminating the urine out of body.
  • Kidney functions for the excretion of waste in form of urine from the body.
  • It is stated that there are about 1,000,000 filtering units are called nephrons.
  • It get passed within every 45 minutes.
8 0
3 years ago
PLEASE HELP!!!!! The table below shows the volume of two samples, X and Y, when placed in three containers of different volumes.
Dahasolnce [82]

Answer:

B m8

Explanation:

7 0
3 years ago
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