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
Sergeeva-Olga [200]
3 years ago
7

HELP ASAP

Chemistry
2 answers:
vitfil [10]3 years ago
8 0
Looking at the following answers, and considering the definition of a biological community I believe the answer is D.
Alekssandra [29.7K]3 years ago
3 0

the answer would be D) The bison, elk, aspen, and microorganisms in Yellowstone

You might be interested in
Two students were conducting an experiment. They have two blocks of different metals and wanted to identify them. They started b
erik [133]

Answer:

this dosen't make sense

5 0
3 years ago
In this task, you’ll observe a chemical reaction between baking soda and vinegar in water. write a hypothesis to predict the rel
Archy [21]

Answer:

Increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time)

Explanation:

The chemical reaction between baking soda and vinegar in water is shown in the chemical reaction equation below;

NaHCO3(aq) + CH3COOH(aq) ----->CO2(g) + H2O(l) + CH3COONa(aq)

The chemical name of baking soda is sodium bicarbonate (NaHCO3) while vineager is a dilute acetic acid (CH3COOH) solution. This reaction provides a very easy set up in which we can study the effect of concentration on the rate of chemical reaction.

We must have it behind our minds that increase in the concentration of reactant species increases the rate of chemical reaction. Secondly, the rate of the reaction between baking soda and vinegar can be monitored by observing the volume of CO2 evolved and how quickly it evolves from the reaction mixture.

We can now postulate a hypothesis which states that; 'increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time).'

If we go ahead to subject this hypothesis to experimental test, it will be confirmed to be true because a greater volume of CO2 will be evolved within a shorter time as the concentration of the reactants increases.

3 0
3 years ago
In one to two sentences, explain a similarity and difference between the particles in liquid water at 100 c and the particles in
mojhsa [17]

Answer:

The particle theory is used to explain the properties of solids, liquids and gases. The strength of bonds (attractive forces) between particles is different in all three states.

Explanation:

6 0
3 years ago
Which body system includes the lungs?m​
Zanzabum

Answer: <u>The respiratory system </u>

Explanation: It includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth.

4 0
3 years ago
Explain why the statement “The speed of light is 300 million m/s” is not always correct.
levacccp [35]

Because the speed of light is determined by the medium that is it in. If light is in a vacuum it goes 300 million meters per second but it is slower in air, and even slower in water because water is more dense than the previous two.

5 0
3 years ago
Other questions:
  • Consider the reaction 2 CO + O2 → 2 CO2 .What is the percent yield of carbon dioxide
    10·1 answer
  • Identify the single displacement reaction. C4H12 + 7O2 ⟶ 6H2O + 4CO2 2H2 + O2 ⟶ 2H2O Al2S3 ⟶ 2Al + 3S Cl2 + 2KBr ⟶ 2KCl + Br2
    8·1 answer
  • Short structures that cover the outside of some protists and help them move are called what?
    5·1 answer
  • Which of these, all of which include earth, most likely contains the most dark matter
    9·1 answer
  • A sample of carbon dioxide gas that has a volume of 14.6 L at STP contains how many
    6·1 answer
  • According to Image 2, which tectonic plate is composed of the largest percentage of oceanic lithosphere?
    12·2 answers
  • Clouds are made up of tiny droplets of water. Which two spheres are clouds a
    5·1 answer
  • How many moles of each element are in one mole of (NH4)2S? (3 points)
    5·2 answers
  • What is difference between concentration and dilution of solution​
    5·2 answers
  • PLEASE HELP!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!