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
marishachu [46]
3 years ago
9

For the Redi experiment , Match the experiment to it’s description?

Chemistry
1 answer:
Yuki888 [10]3 years ago
6 0
The answer for #1 description is Hypothesis: Redi's hypothesis is that flies can only be produced by other flies.  
The answer for #2 description is Control: The control group was the meat in the container with no covering, thus leaving it open to the flies. 
The answer for #3 description is Independent Variable: The independent variable is covering the meat in the container with a mesh so the flies can't get to it. 
The answer for #4 description is Dependent Variable: The dependent variable is the presence of maggots on the meat that is observed in response to the independent variable. 
The answer for #5 description is Constants: The constants or factors that are kept the same for both groups are the location of containers and temperature, so that it was not one of these that caused the change. 
You might be interested in
Everyone needs a certain number of ____________ to meet their daily energy needs.
Ganezh [65]

Answer:

The answer is calories.

The average human being needs 2000 calories for them to be energized.

8 0
3 years ago
Calculate the pH of a solution prepared by mixing: (Show your work for these calculations) pk of acetic acid is 4.75 a. two mole
kupik [55]

Answer:

Explanation:

To calculate pH you need to use Henderson-Hasselbalch formula:

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

Where HA is the acid concentration and A⁻ is the conjugate base concentration.

The equilibrium of acetic acid is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺ pka: 4,75

Where <em>CH₃COOH </em>is the acid and <em>CH₃COO⁻ </em>is the conjugate base.

Thus, Henderson-Hasselbalch formula for acetic acid equilibrium is:

pH = 4,75 + log₁₀ \frac{[CH_{3}COO^-]}{[CH_{3}COOH]}

a) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[2 mol]}

<em>pH = 4,75</em>

<em></em>

b) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[1mol]}

<em>pH = 5,05</em>

<em></em>

I hope it helps!

7 0
4 years ago
Alex cut a pizza into 8 equal slices. He removed 2 of the slices of pizza. What is the measure of the angle made by the missing
Firlakuza [10]

Answer: 90 degrees.

Explanation:

4 0
3 years ago
PLEASE ANSWER NOW!!!!! WILL GIVE BRAINLIEST!!!
oee [108]

Answer:

a

b

Explanation:

5 0
3 years ago
A piece of mental with a mass of 106 g is placed in a 50 mL graduated cylinder.The volume rises from 20 mL to 31 mL. What is the
garik1379 [7]

Answer:

9.64g/mL

Explanation:

Given parameters:

Mass of the metal  = 106g

Volume of cylinder = 50mL

Volume difference  = 31mL  - 20mL  = 11mL

Unknown:

Density of the metal  = ?

Solution:

To find the density of the metal, we use;

 Density  = \frac{mass}{volume}  

 Density  = \frac{106}{11}   = 9.64g/mL

8 0
3 years ago
Other questions:
  • A 74.28-g sample of ba(oh)2 is dissolved in enough water to make 2.450 liters of solution. how many ml of this solution must be
    8·1 answer
  • hi friends my brain is mentally challenged so therefore i need someone to help with my science hw bc it’s 4 in the morning and i
    6·2 answers
  • The glow emitted by a substance exposed to external radiation is called
    12·1 answer
  • The rate at which a reaction is proceeding at a specific point in time is called the:______
    12·2 answers
  • Why is 1-methylhexane not a legitimate name for a compound?
    10·1 answer
  • Describe what happens to the mass number and the atomic number of a nuclide during alpha decay.
    12·2 answers
  • What causes waves to occur?
    9·1 answer
  • Divide rs 120 I three parts which are in THE ratio of 1:2:3.​
    12·1 answer
  • Why is it useful to organize the data on a graph? Explain your answer.
    10·1 answer
  • Four students presented different analogies to describe the formation of an ionic bond.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!