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
VARVARA [1.3K]
3 years ago
7

The testable question in a science investigation reads: “How does the size of a motor affect the speed of the vehicle?” What is

the independent variable in the question?
A) the sizes of motors


B) the brands of motors


C) the varying speeds


D) the types of vehicles
Chemistry
1 answer:
deff fn [24]3 years ago
3 0

The independent variable for this question would be A) the sizes of motors.

You might be interested in
if you measure the mass of a model car to be 230 grams. the actual mass is 218 grams. what is your percent error.
Roman55 [17]
27.6% is the correct answer 
6 0
3 years ago
Name the following molecule in the image
Vesna [10]

\\ \sf{:}\longrightarrow 2,4-diethyl-2-methylpentane

4 0
2 years ago
Help RRLY EASY I JUST DONT UNDERSTAND
andreyandreev [35.5K]

Answer:

the first fill-in is 400

the second fill-in is 4

Explanation:

5 0
3 years ago
Read 2 more answers
Which step in the free-radical chlorination of methane do you expect to be the most exothermic? attempt this problem without loo
stiks02 [169]

The termination step of the free-radical chlorination of methane is the most stable one among all three steps.

The free-radical substitution reaction between chlorine and methane features three major steps:

Initiation, during which chlorine molecules undergo homolytic fission to produce chlorine free radicals. Ultraviolet radiations are typically applied to supply the energy required for breaking the chlorine-chlorine single bonds. The initiation step is thus <em>endothermic</em>.

Propagation, a process in which chlorine free radicals react with methane molecules and remove a hydrogen atom from the alkane to produce hydrogen chloride and an alkyl radical e.g., \cdot \text{CH}_3. The carbon-containing free radical would react with chlorine molecules to produce chloromethane and yet another chlorine free radical. This process can well repeat itself to chlorinate a significant number of methane molecules.

Termination. Free radicals combine to produce molecules. For example, two chlorine free radicals would combine to produce a chlorine molecule, whereas two alkyl free radicals would combine to produce an alkane with two-carbon atoms in its backbone.

Chemical processes that increase the stability of a substance reduces its chemical potential energy. Energy conserves, thus such processes would also release energy equal to the potential energy lost in quantity. Free radicals are unstable and- as seen in the propagation step- compete readily with neutral molecules for their electrons. The propagation step keeps the number of free radicals constant and is therefore more exothermic than the initiation step. The termination step reduces the number of free radicals, increase the stability of the system by the greatest extent, and is therefore the most exothermic step among the three.

3 0
3 years ago
A chemist has 2.0 mol of methanol (CH3OH). Molar mass of menthanol is 32.0g/mol. What is the mass, in grams, of the sample
Mademuasel [1]
2.0 mol x 32.0 g / 1 mol =
3 0
3 years ago
Other questions:
  • Rate is related to?<br> A. Volume<br> B. Time<br> C. Distance <br> D. Percentage
    11·2 answers
  • How many ounces are in a 2-liter of soda? Just out of curiousity?
    9·1 answer
  • Convert 60 grams of nitrogen gas (N2) to liters.
    6·1 answer
  • 12.2 scientific notation
    5·1 answer
  • Which increases the rate of a chemical reaction? A. a catalyst B. a higher volume C. a lower pressure D. a lower temperature
    11·2 answers
  • A student ran the following reaction in the laboratory at 671 K: 2NH3(g) N2(g) + 3H2(g) When she introduced 7.33×10-2 moles of N
    6·1 answer
  • PPPLLLSSS HELP NOW 15 POINTS WHOEVER ANSWERS
    14·1 answer
  • Why is the average air temperature of Makassar warmer than the average air
    13·1 answer
  • Within a plant, photosynthesis is critical. It provides cells with the glucose they need for
    8·2 answers
  • Post- Assessment:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!