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
vampirchik [111]
4 years ago
15

Which of the following statements about energy is true? I. Kinetic energy cannot be transformed into another type of energy. II.

Kinetic energy can be transformed into potential energy. III. Potential energy can be transformed into kinetic energy. IV. Potential energy cannot be transformed into another type of energy. A. I and IV only B. II and III only C. I and III only D. II and IV only
Chemistry
1 answer:
Aleks [24]4 years ago
5 0

Answer:

B

Explanation:

First Law of thermodynamics says energy of the universe is constant and can only be changed in other forms of energy

You might be interested in
Which of the following best describes urine?
Anestetic [448]

Answer:

Homogeneous mixture.

Explanation:

On mixing with water, it dissolves completely in it, hence, being a homogenous mixture.

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>

3 0
2 years ago
Could a mixture be made up of only one element and no compounds​
Firdavs [7]

Yes. A mixture can be made up of just elements without the use of a compound, you can also just use compounds in a mixture without any elements

5 0
3 years ago
Calculate to three significant digits the density of chlorine pentafluoride gas at exactly and exactly . You can assume chlorine
slega [8]

Answer:

Density is 6.16g/L

Explanation:

<em>... at exactly -15°C and exactly 1atm...</em>

<em />

Using general gas law:

PV = nRT

We can find density (Ratio of mass and volume) in an ideal gas as follows:

P/RT = n/V

<em>To convert moles to grams we need to multiply the moles with Molar Weight, MW:</em>

n*MW = m

n = m/MW

P/RT = m/V*MW

P*MW/RT = m/V

<em>Where P is pressure: 1atm;</em>

<em>MW of chlorine pentafluoride: 130.445g/mol</em>

<em>R is gas constant: 0.082atmL/molK</em>

<em>And T is absolute temperature: -15°C+273.15 = 258.15K</em>

<em />

Replacing:

P*MW/RT = m/V

1atm*130.445g/mol / 0.082atmL/molK*258.15K = m/V

6.16g/L = m/V

<h3>Density of the gas is 6.16g/L</h3>

<em> </em>

7 0
3 years ago
What are two versions of genes called and how are they diffrent?
Stolb23 [73]

Answer with Explanation:

Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits. Since human cells carry two copies of each chromosome they have two versions of each gene.

8 0
3 years ago
Explain the connection between stereotypes and self-fulfilling prophecy. Give an example of how this works.
Darya [45]

Explanation:

Self fulfilling prophecy means how our expectations or expectations of others influence our own behavior. Being self fulfilling means, to bring about a result that has been already foretold or talked about.

Whereas Stereotype is a preconceived notion about a particular type of person or thing. for examples woman as driver are not so good is an stereotype. However, the idea may untrue or partly true.

6 0
3 years ago
Other questions:
  • Ethene is converted to ethane by the reaction flows into a catalytic reactor at 25.0 atm and 250.°C with a flow rate of 1050. L/
    11·1 answer
  • How can the existence of atoms help to explain the law of define proportions .
    15·1 answer
  • Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate
    6·1 answer
  • In what way is psychology connected to the natural sciences and different than other social sciences?
    6·1 answer
  • Lab: Acids and Bases Assignment: Lab Report
    10·2 answers
  • For Kw, the product of [H3O+] and [OH-] is ___________.
    8·1 answer
  • Select the word or phrase that best completes each of the following sentences.
    9·2 answers
  • In stoichiometric calculations, which quantity MUST be used to convert from one chemical substance to another?
    6·1 answer
  • If a sample of N2 gas has an initial pressure of 500 Torr and volume of 0.5 L, what will the final volume be if the pressure is
    8·1 answer
  • List three conditions for separating crude oil constituents pls someone help me out ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!