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
Inessa05 [86]
3 years ago
6

A student is investigating the affect of different salts on melting points. Four patches of ice of equal size are roped off and

a different type of salt is poured on each, one receives table salt (NaCl), one receives Calcium Chloride (CaCl2), one receives Potassium Carbonate (KCO3) and the fourth receives inert sand instead. Each patch receives an equal amount of salt or sand. What could the student investigate?
Biology
2 answers:
Ket [755]3 years ago
8 0
How the equal amount of different sand or salt is poured on the same size of ice
vaieri [72.5K]3 years ago
7 0

Answer:

Considering that the amount conditions of the ice and salt are controlled and we want to study the melting points.

They can only study the amount of time it takes  it to melt under each different types of salt and sand.

Explanation:

First of all, we need to understand something, they are going to study salt melting point on ice. All of them receive the same amount of ice and salt. Therefore, they can only study the amount of time that each salt takes to melt the ice. Because the dependent variable is the time the ice takes to melt under the effect of different types of salt and sand, while the independent variable is the ice. It is a comparison study without a control group because we are not using one as a base.

You might be interested in
Henry eats rice for lunch, which contains starch. Which enzyme catalyzes the reaction that takes place and which product is the
emmasim [6.3K]
<span>amylase catalyzes the reaction; glucose is the product</span>
3 0
3 years ago
Read 2 more answers
Part of a mouse's tail is cut off as the mouse escapes from a cat. The mouse later reproduces.
Valentin [98]

Answer:

the injury happened at some point during its life and is not a genetic defect

8 0
3 years ago
Rosalind Franklin used x-ray diffraction to record how x-rays scatter when bounced off the surface of DNA molecules.
Lady bird [3.3K]

Answer:

e) All of the answers are correct

Explanation:

The first X-ray picture of DNA taken in 1952 by Rosalind Franklin using the  X-ray crystallography technique revealed the helical shape of DNA. Based on this discovery, it was discovered later on that the DNA molecule was made of two chains of nucleotides and at high humidity i.e when exposed to water it becomes long and thin.

7 0
3 years ago
Which of the following statements about nuclear energy is true?
Eddi Din [679]

Answer:

Nuclear energy can be used and controlled and it is more efficient than other forms. I would say B.

7 0
3 years ago
~fourth largest plate
scoray [572]

Answer:

Option (A)

Explanation:

The African plate is usually referred to as the fourth major (largest) tectonic plates that cover the continent of Africa and a portion of both the Atlantic and Indian ocean.

This plate shares a convergent plate boundary with the Eurasian plate towards its western side, where the African plate being denser subducts below the lighter Eurasian plate

It shares a boundary with the two smaller plates namely the Somalian and the Arabian plate towards its eastern side.

Thus, the correct answer is option (A).

6 0
3 years ago
Other questions:
  • The __________ is a fluid structure that allows membrane proteins to move freely.
    8·2 answers
  • Dinosaurs survived for at least 700,000 years after meteorite collision Discuss how the research in this article shows how new t
    11·2 answers
  • WHICH OF THE FOLLOWING IS THE FLATTENED PORTION OF THE LEAF
    6·2 answers
  • Which biome had the highest average temperature?
    10·1 answer
  • In ____ most atp, production occurs in the mitochondria
    14·2 answers
  • Which organisms are the most diverse forms of life?
    9·1 answer
  • 1. Cross a heterozygous tall (Tall is dominant) pea plant with one that is also heterozygous for tallness.
    14·1 answer
  • Who is known as father of Zoology<br><br> A) Darwin B) Aristotle<br> C) Lamark D) Theophrastus
    12·2 answers
  • Plzzzzz help quickkkkkk
    6·2 answers
  • Identify the complementary strand of DNA with the sequence: ACC GTA TCG
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!