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
hoa [83]
3 years ago
12

Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One gro

up with calculators,the other group without calculators. What is the independent variable,the dependent variable and constant variable?
Chemistry
2 answers:
Vlad [161]3 years ago
8 0

The independent variable is the calculator

The dependent variable is the speed of solving the problem.

The constant variable is the same set of problem that was assigned to two groups of students.  

The dependent variable is the one that is being tested by experimentation. The dependent variable depends on the independent variable.  

The independent variable can b changed by the experimenter whereas the constant variable remains unchanged throughout the experiment.  

jeka57 [31]3 years ago
7 0
The independent variable is the variable being changed. In this case, the independent variable is the calculators. The dependent variable is essentially what you are looking for that <u>depends</u> on the independent variable. In this case it would be time. The constant variable or controlled variable are something that doesn't change and would skew the results. One may be the exact same problem for both groups. Try to come up with two more.
You might be interested in
How is oxide different from a neutral oxygen atom
Zepler [3.9K]

Answer: The main difference between oxide and oxygen is that oxide is a chemical compound with at least one oxygen atom while oxygen is an element whose atomic number is 8.

Explanation: let me know if it was right or wrong

4 0
2 years ago
Is a chemical reaction when put salt into fizzy drinks and why
fomenos
Um to my best knowledge I believe  it is the carbonated water 

7 0
3 years ago
Read 2 more answers
A student combines 20.0 grams of hydrogen and 20.0 grams of oxygen in a reaction. According to the law of conservation of mass,
jekas [21]

Answer:

A)20.0grams

Explanation:

4 0
3 years ago
Read 2 more answers
What the meaning by the team alloy​
marishachu [46]

Explanation:

I think you wanted to ask what is the meaning by the term alloy:

alloy is a metallic substance which is composed of two or three elements, as either a compound or solution..

8 0
2 years ago
When iron(III) oxide (Fe2O3) is exposed to carbon monoxide (CO) under high pressure, metallic iron (Fe) and carbon dioxide (CO2)
DedPeter [7]

Answer:

The equation is Fe₂O₃ + CO ⇒ Fe + CO₂.

The balanced reaction equation is Fe₂O₃ + 3CO ⇒ 2Fe + 3CO₂.

Explanation:

First, we have to write our equation. It's actually pretty straightforward - first we look for our reactants (looks like it's Fe₂O₃ and CO), then we look for our products (Fe and CO₂). Then, we have to balance it so that both sides have the same number of both element.

Currently, we have the equation Fe₂O₃ + CO ⇒ Fe + CO₂. There are 2 Fe atoms, 4 O atoms, and 1 C atom on the left side. There is 1 Fe atom, 2 O atoms, and 1 C atom on the right side.

First thing we can do is give our Fe on the right side a coefficient of 2. This will make it equivalent to the 2 Fe atoms on the left side:

Fe₂O₃ + CO ⇒ 2Fe + CO₂

Next, we need to make sure that we have the same number of C and O atoms on each side. This takes a little bit of thinking, but what we have to do is give CO a coefficient of 3 and CO₂ a coefficient of 3. This gives us 6 O atoms on the left side (when we include the O₃) and 6 O atoms on the right side (since there are 3 O₂ atoms and 3 times 2 is 6). Here's what that looks like:

Fe₂O₃ + 3CO ⇒ 2Fe + 3CO₂

And that's how I balanced the equation. It can be confusing, but with enough practice, it will get easier and easier. :)

8 0
2 years ago
Other questions:
  • An atom of which element has the largest atomic radius?
    10·2 answers
  • The major anatomic difference in autonomic reflex arcs is that there are two sensory afferents. True or False
    12·1 answer
  • When a match is lit, sulfur (S8) reacts with oxygen to release energy and form sulfur dioxide, SO2. Write the balanced equation
    12·1 answer
  • I need to make 4.5L of a 1.0mol/L solution of acetic acid, HC2H3O2. What volume of concentrated 17.4 Mol/L acid do I need?
    10·1 answer
  • In the lab, you added an excess of acetic acid to drive the reaction forward, favoring products at equilibrium according to Le C
    8·1 answer
  • The total concentration of ions in a 0.75 M solution of HCl is
    15·1 answer
  • ΑC2H6O+βO2 → γC2H4O2+δH2O
    10·1 answer
  • How can the percent yield be used to determine the actual yield of a chemical reaction
    9·1 answer
  • 4. Explain error and how it can impact your results from an experiment
    9·1 answer
  • Did you write these compounds?<br> KBr<br> 2 NH₂OH<br> 2HNO3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!