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
lawyer [7]
3 years ago
11

In a lab about the activity series, a solution of copper(II)chloride is placed in a test tube with zinc metal. If zinc is higher

up on the activity series, it will produce a reaction and replace the copper. Bits of copper are seen in the bottom of the test tube. A good conclusion would be? A) Zinc is lower on the activity series because there is no evidence of a reaction. B) Zinc is higher on the activity series because there is no evidence of a reaction. C) Zinc is lower on the activity series because there is clear evidence of a reaction. D) Zinc is higher on the activity series because there is clear evidence of a reaction.
Biology
1 answer:
Tcecarenko [31]3 years ago
5 0

Answer:

Option D, Zinc is higher on the activity series because there is clear evidence of a reaction.

Explanation:

It is very clear that a metal which is higher in activity will replace a metal having lower activity.  

Since, Zinc has higher activity than copper, it is very sure that it in a copper chloride solution it will replace copper and produce zinc chloride solution leaving behind copper as residue.  

Residues of copper is a clear evidence of reaction  

The chemical equation for this reaction would be -

CuCl_2 + 2Zn^+ -----> 2ZnCl + Cu^{2+}

Hence, option D is correct

You might be interested in
Question 10 of 10
Bad White [126]

Answer:

maybe it could be C?

Explanation:

i dont know why?

5 0
3 years ago
4. Which of the following is true about a mutation? A.) it is always damaging to a person B.) it never harms the next generation
DaniilM [7]

Answer:

D

Explanation:

Mutation can be harmful and it can have no effect.

4 0
2 years ago
Read 2 more answers
4. A white albino rabbit lacks fur color. It carries the alleles rr. What is its
Marta_Voda [28]

Answer:

The phenotype of the rabbit is the absence of fur colour and the genotype is the alleles rr.

Explanation:

The genotype can be described as the genes which are present in an organism. Genes are made up of alleles. As the rabbit in the question carries the alleles, rr, hence it is the genotype of the white albino rabbit.

The phenotype can be described as the physical appearance that results from the particular genes present in an organism. As the white albino rabbit carries the alleles,rr, due to which it doesn't have fur, hence no fur is the phenotype of it.

7 0
3 years ago
Which explains how interference is avoided between the signals that cordless phones receive and the signals that they broadcast?
aliya0001 [1]

Answer:

the signals have different frequency

Explanation:

The way that interference is avoided in these cases is that the signals have different frequency. Cell phone signals travel in a very specific wavelength, how often this wave repeats in a given span is called the frequency. By having these signals in different frequencies it prevents the signals from mixing with each other and instead allowing them to reach their destination intact. Otherwise, the signals would combine into a mess of uncomprehensible data, which is what we call interference.

3 0
3 years ago
Which of these is a central purpose of steroids in mammals? Choose the correct answer. A)They form protective coatings. b)They s
denis23 [38]

Ans.

Steroids are defined as active organic bio-molecules, having four rings with a specific molecular configuration. Steroids play role in two major functions: as hormones or signaling molecules and as structural components of plasma membrane.  

Examples of steroid hormones are estrogen, progesterone, and cortisol. Thus, the correct answer is 'option b). they serve as chemical messengers.'

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which phenomenon usually brings warm, humid conditions to North Carolina?
    7·2 answers
  • What is so bad about coal
    7·2 answers
  • What is recombinant dna explain how recombination dna can be used to create insulin
    13·1 answer
  • Which of the following is not a benefit of agar as a solid medium?
    10·1 answer
  • Which of the following describes how scientific law and a science theory are similar?
    6·1 answer
  • What do carbohydrases break down?
    7·1 answer
  • What is the type of ultrasound that is being used in the image above?
    9·1 answer
  • Which statements about the cycle of weathering, erosion, and deposition are true? Check all that apply. Deposition leads to the
    7·2 answers
  • Qué sucede con el agua en la respiración celular??​
    11·1 answer
  • .The major organs of circulatory system are
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!