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
lesantik [10]
3 years ago
6

3. Your friend says that when someone drives a car, they use up energy. Develop an argument to refute your friend’s claim using

scientific evidence from this activity.
Chemistry
1 answer:
Volgvan3 years ago
3 0
The friends claim can be refuted using the Law of the Conservation of Energy, which states that energy can not be created or destroyed, only transferred. Therefore, the energy used to drive the car wasn’t ‘used up’, simply transferred into other forms.
You might be interested in
Draw the lewis structure for so42-. How many equivalent resonance structures can be drawn?
Elena-2011 [213]

Answer : The Lewis-dot structure and resonating structure of SO_4^{2-} is shown below.

Explanation :

Resonance structure : Resonance structure is an alternating method or way of drawing a Lewis-dot structure for a compound.

Resonance structure is defined as any of two or more possible structures of the compound. These structures have the identical geometry but have different arrangements of the paired electrons. Thus, we can say that the resonating structure are just the way of representing the same molecule.

First we have to determine the Lewis-dot structure of SO_4^{2-}.

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, SO_4^{2-}

As we know that sulfur and oxygen has '6' valence electrons.

Therefore, the total number of valence electrons in SO_4^{2-} = 6 + 4(6) + 2 = 32

According to Lewis-dot structure, there are 12 number of bonding electrons and 20 number of non-bonding electrons.

Hence, the Lewis-dot structure and resonating structure of SO_4^{2-} is shown below.

8 0
4 years ago
The chemical formula of ordinary sugar is C12H22O11. Calculate the mass of 7.35 mol of sugar.
ch4aika [34]

First, you need to find the mass of 1 mol of sugar. Mass, or molar mass, can simply be found by adding the masses of the individual elements. These are given to you on the periodic table.

C_{12}H_{22}O_{11}

12 x 12.011 grams (molar mass of Carbon) = 144.132 g

22 x 1.008 grams (molar mass of Hydrogen) = 22.176 g

11 x 15.999 grams (molar mass of Oxygen) = 175.989 g

Add all of the pieces together.

144.132 g + 22.176 g + 175.989 g = 342.297 grams

So, if one mole has 342.297 grams, then 7.35 of that amount will be your answer.

342.297 g/mol x 7.35 mol =  2,515.88 grams

7 0
3 years ago
1.) Activation energy is _____.
balandron [24]
To answer the questions,

(1) Activation energy is the amount of energy that is needed for the reaction to proceed, converting the reactant to products. The answer is letter B.

(2) The rate of chemical reaction normally increases as the reactant concentration is increased. The answer is letter C. 

6 0
3 years ago
Read 2 more answers
The period of of 440 Hz soundwave is how many seconds
Rudiy27
The period of any wave is one second. the measure of the wave, in this case 440 Hz, is how many wavelengths per second.
8 0
4 years ago
What is the ph of a solution with [h+] = 2.3 10-9?
oksano4ka [1.4K]
pH = -log[H+] = -log[2.3*10^-9] = 8.64
8 0
3 years ago
Other questions:
  • What causes a chemical change In electrolytic cells?
    7·1 answer
  • Describe the preparation of 2.000 L of 0.0500 M AgNO3 (169.87 g/mol) from the primary-standard-grade solid.
    8·1 answer
  • Waters states of matter include steam liquid water and ice. What about water is the same in the states? What can you conclude ab
    8·1 answer
  • How many liters of O2 are required to produce 3.99 miles of CO2?
    10·1 answer
  • A little boy is playing with a plastic water bottle. He blows air into the bottle to make a whistling sound. Then, he wedges a p
    15·1 answer
  • What does DNA and cell membrane have in common?
    14·2 answers
  • Atoms join together to form compounds by gaining losing or sharing
    15·2 answers
  • List the three requirements for a correctly written chemical equation.2. Give one example of a word equation, one example of a f
    8·1 answer
  • Write the chemical symbol for the isotope of cobalt with 37 neutrons
    13·1 answer
  • Need help ASAP PLS SCIENCE
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!