1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dexar [7]
2 years ago
8

As part of an investigation, students combined substances in a beaker to observe

Chemistry
1 answer:
aleksklad [387]2 years ago
3 0

Answer:

please mark brainlest and it's  Procedure 1: One of the products was a gas that escaped into the air.

Procedure 2: A gas from the air reacted with one of the other reactants

Explanation:

the gas ca evaporate so it would'nt be a or c and b dosent make sense.

You might be interested in
A group of giraffes feeds on leaves and grasses during the daytime. Right now, it is dark out and the giraffes are not eating. I
Zanzabum

Answer:

Carbon dioxide is moving out of the living things.

Explanation:

The food materials eaten by living things contain carbon in the form of complex organic matter. When living things feed, they ingest this complex organic material into their bodies.

During the process of digestion, this complex organic material is broken down to give glucose. Glucose is the energy molecule in living things. Excess glucose in the body is stored as glycogen.

During cellular respiration, glucose is broken down to release carbon dioxide. Hence, at night when the giraffe has stopped eating, cellular respiration continues to occur and carbon dioxide is released, that is, carbon dioxide continues to move out of living things at night.

7 0
2 years ago
What percentage of radioactive substance remains after two half-lives
Ksju [112]

Answer:

After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product. After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product. After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product.

Explanation:

3 0
2 years ago
What are your main fears about this class (if any)?​
netineya [11]
This is based on your personal opinion lol but ig you can say public speaking
8 0
3 years ago
Read 2 more answers
If you have 400 grams of a substance that decays with a half-life of 14 days, then how much will you have after 56 days? To help
alisha [4.7K]

Answer:

25 grams

Explanation:

You strat off with 400 grams of your substance. By day 14, half has dcayed and you only have 200 grams left. By day 28, there are 100 grams of the substance. On day 42, there are 50 grams left. Finally, on day 56, the substance has been through four half-lives and 25 grams remain.

3 0
2 years ago
Warm air and water both tend to rise while cooler air and water sink. When different parts of the oceans are heated unevenly, th
ale4655 [162]

Answer:

a

Explanation:

3 0
2 years ago
Other questions:
  • Which tool was most likely used in a procedure if the lab report shows that approximately 300 mL of water was used?
    12·1 answer
  • How does an atom become a positive ion?
    14·2 answers
  • What principle do we use in writing the formula of an ionic compound such as NaCl or MgI2? How do we know that two iodide ions a
    14·1 answer
  • If the distillation is performed in full as described in the experimental procedure (including the redistillations of fractions
    11·1 answer
  • Which of the following is most likely the distance between two places on Earth?
    7·2 answers
  • During the experiment, scientists noted that several of the reaction beakers became hot to the touch. All of the following react
    8·1 answer
  • On the table below, record your observations before and after the interactions and note if mass was conserved. Describe the chan
    6·1 answer
  • What are the three major branches of natural science?
    5·2 answers
  • Which family contains neither metals nor non-metals
    8·2 answers
  • How can glass be a liquid if it's so hard?​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!