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
patriot [66]
2 years ago
6

1. Have scientists been able to invent a perpetual motion machine? O Yes O No

Chemistry
2 answers:
Rasek [7]2 years ago
5 0
The answer is No
I think this way because of the law of first law of thermodynamics where it says that energy can't be created or destroyed. This means you can’t receive more energy then you put in. In conclusion a machine could only ever produce as much energy as it consumed.
FromTheMoon [43]2 years ago
3 0
After using my big brain it’s No
You might be interested in
Electrical energy is the energy of__________
Arturiano [62]

Answer:

<h3>electrical energy is the energy of Kinetic energy </h3>

Explanation:

<h3>I hope l helped you.</h3>
6 0
3 years ago
Read 2 more answers
What is meant by collision theory?
Tcecarenko [31]

Answer:

The collision theory states that a chemical reaction can only occur between particles when they collide (hit each other).

<em>h</em><em>o</em><em>p</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em><em>s</em><em>~</em>

4 0
2 years ago
Ethanol, 1-octanol, methanol and 3-methyl-1-butanol contain what functional group characteristics of all alchohols
Amiraneli [1.4K]

Answer:

The hydroxyl group  

Explanation:

The molecular formulas of the above alcohols are

CH₃CH₂-OH

CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₂-OH

CH₃-OH

CH₃CH(CH₃)CH₂CH₂-OH

The functional group that is characteristic of all alcohols is the hydroxyl group (-OH).

6 0
4 years ago
The alkali metals play virtually the same general chemical role in all their reactions. (b) How is it based on atomic properties
vfiekz [6]

b) It is based on atomic properties as alkali metals requires 7 more electrons to complete their outer orbit. And they try to give those electrons to other elements to obtain noble gas configuration.

Noble gases are the gases which do not react easily with anything. They are also called as Inert gases, and belongs to group 18 of the periodic table.

Alkali metals are the substances which are found in Group I of a periodic table. Mostly the elements which are present are:

  • Lithium (Li)
  • Sodium (Na)
  • Potassium (K)
  • Rubidium (Rb)
  • Cesium (Cs)
  • Francium (Fr)

Properties of alkali metals are:  Soft, shiny reactive metals. They are soft enough to cut with knife. Metals react with water and air quickly and gets tarnish, so pure metals are stored in container by dipping them in oil to prevent oxidation.

To know more about Alkali metals, refer to this link:

brainly.com/question/18153051

#SPJ4

6 0
2 years ago
Given that a mass of a ball is (36.0 g), and the volume is (8.0 mL), what is the ball's density in g/mL?​
max2010maxim [7]

Answer:

4.5g/mL

Explanation:

Given parameters:

Mass of ball  = 36g

Volume of the ball  = 8mL

Unknown:

Density of the ball  = ?

Solution:

Density is the mass per unit volume of a substance.

          Density  = \frac{mass}{volume}  

So;

 Density  = \frac{36}{8}    = 4.5g/mL

5 0
3 years ago
Other questions:
  • When a substance changes from one phase to another, which of the following occurs?
    9·1 answer
  • hat is the pH of a solution with a hydroxide ion concentration of 10–6M? A. pH = 12 B. pH = 8 C. pH = 6 D. pH = 7
    8·1 answer
  • Which of the following are not created by an arrangement of electric charges
    12·1 answer
  • A scientist is tracking an object orbiting the sun that is found between mars and Jupiter. Which additional feature can be used
    10·1 answer
  • Which commercial technology commonly uses plasmas?
    5·2 answers
  • Consider the following mechanism for the reaction between nitric oxide and ozone:
    12·1 answer
  • How many molecules are in 7V205?​
    10·1 answer
  • 1.<br> Events in which molten rock spews out of<br> the mantle as ash, lava, and gases
    5·1 answer
  • Nkjnkjnknjknkjnnkjnknjkkjnjknj
    9·2 answers
  • Metal objects, such as knifes or bullets, that come into contact with bones can leave trace evidence on them.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!