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
Phantasy [73]
2 years ago
6

What is my control group in my experiment and why is it that?

Chemistry
2 answers:
alex41 [277]2 years ago
8 0
Your control group would be the batteries since you CONTROL what brand you're using, for which one lasts the longest...aren't you suppose to figure that out when you do the experiment?
lidiya [134]2 years ago
8 0
The control group is the group or factors that aren't changing. but with the information provided, there isn't really one because all three brands are being changed to be tested.
You might be interested in
Part a the sun produces energy via fusion. one of the fusion reactions that occurs in the sun is 411h→42he+201e how much energy
Orlov [11]
The equation for the nuclear fusion reaction is,
4 ¹₁H → ₂⁴He + 2 ₁⁰e
Calculation of mass defect,
Δm = [mass of products - mass of reactants]
      = 4(1.00782) - [4.00260 + 2(0.00054858)]
      = 0.0275828 g/mole
Given that,
Mass of Hydrogen-1 = 2.58 g
The no. of moles of ₁¹H = 2.58 g / 1.00782 = 2.56 moles
Therefore, the mass defect for 2.58 g of ₁¹H is, 
= 2.56 moles * (0.0275828 g / 4) = 0.01765 x 10⁻³ kg
Energy for (0.01765 x 10⁻³ kg) is, 
= (0.01765 x 10⁻³ kg) (3.0 x 10⁸)² = 1.59 x 10¹² J
4 0
3 years ago
Read 2 more answers
What is 11.75 millimeters in meters
Lana71 [14]

Answer:

in meters its 0.01175

Explanation:

8 0
1 year ago
Read 2 more answers
Which element is most likely to gain an electron?
Oduvanchick [21]
B. Fluorine (F) is the right answer
3 0
2 years ago
Enter the chemical formula of a binary molecular compound of hydrogen and a Group 6A element that can reasonably be expected to
NARA [144]

Answer:

Any binary molecular compound of hydrogen and a Group 6A element above Selenium will be less acidic, so water and dihydrogen sulfide are less acidic in aqueous solution than hydrogen selenide.

Explanation:

Going down in a group increases the atomic radius and a greater atomic radius implyes greater ionic radius.  

When ionization takes place in these compounds they yelds protons (hidrogen ion) and an lewis base (anion). The greater the ionic radius the greater its stability, thus the periodic tendency is increaing the acidity of binary hidrogen compounds when going down a group. On the other hand going up a group decreases acidity, so any molecular compound of hydrogen and a Group 6A element above Selenium will be less acidic, so water and dihydrogen sulfide are less acidic in aqueous solution than hydrogen selenide.

3 0
3 years ago
.
lesya692 [45]

Answer:

Student 3

Explanation:

This question lets us know something about how the density of a gas varies with temperature.

When a gas is heated, its molecules spread out and expand. When this happens, the volume of the gas increases. Remember that density is defined as mass/volume. Thus as the volume increases, the density of the gas decreases.

Therefore, the carbon dioxide rose up because the heat expanded the gas and it became less dense.

7 0
2 years ago
Other questions:
  • Estimate the ph of the resulting solution prepared by mixing 1.0 mole of solid disodium phosphate (na2hpo4) and 1.25 mole of hyd
    12·1 answer
  • Which of these statements is not true about chemical reaction rates?
    7·2 answers
  • Which of these describes an endothermic reaction?
    11·1 answer
  • Which of the following statements is not true regarding acids? (3 points)
    5·2 answers
  • Which best summarizes the flow of energy in a producer
    13·1 answer
  • Estimate the air pressure at an altitude of 5km
    14·1 answer
  • How many more times intense is an earthquake that measures 8 on the Richter scale than an earthquake that measures 5? Explain yo
    15·2 answers
  • An atom contains 6 protons what element is that​
    6·1 answer
  • If a small weather balloon with a volume of 58.0 L at a pressure of 1.00 atmosphere was deployed at the edge of Typhoon Odessa,
    7·1 answer
  • The percentage of keys you type correctly is A. accuracy B. correctness C. exactness D. precision WHO EVER GETS THIS EARNS BRAIN
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!