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
andreyandreev [35.5K]
3 years ago
7

When riding a roller coaster, you go up and down many hills. As you get to the top of a roller coaster, what energy change is ta

king place?
A. potential energy is changed into kinetic energy
B. kinetic energy is changed into potential energy
C. chemical energy is changed into heat energy
D. heat energy is changed into chemical energy​
Chemistry
1 answer:
Dahasolnce [82]3 years ago
8 0

Answer:

A.

Explanation:

The potential energy of the roller coaster increases as the coaster goes up a hill and can be converted to kinetic energy.

You might be interested in
Using stoichiometry, you predict that you should be able to use 314.0 g of Al to produce 1551 g of AlCi3. In your lab
Alex787 [66]

Answer:

90.26%

Explanation:

From the question given above, the following data were obtained:

Theoretical yield of AlCl₃ = 1551 g

Actual yield of AlCl₃ = 1400 g

Percentage yield =?

The percentage yield of the reaction can be obtained as follow:

Percentage yield = Actual yield / Theoretical yield × 100

Percentage yield = 1400 / 1551 × 100

Percentage yield = 140000 / 1551

Percentage yield = 90.26%

Thus, the percentage yield of the reaction is 90.26%

6 0
3 years ago
When an alkaline earth metal, a, reacts with a halogen, x, the formula of the covalent compund formed should be a2x?
Ierofanga [76]

Alkaline earth metal are the elements present in II group in the periodic table and are known as 'Metals' and have a charge of +2.

Alkaline earth metals - Be , Mg Ca, Sr , Ba, Ra

Halogens are present in VII A group in the periodic table and are 'Non-metals' and have a charge of -1.

Halogens - F, Cl, Br, I, At

When Alkaline earth metal (metals) combine with Halogens (non-metals) the compound formed will be ionic compound and the formula of the compound will be based on the charges of the element.

When we write the formula of the ionic compound the charges of the elements get criss crossed.

For example - Mg (Alkaline earth metal) have a charge of +2 and Cl (Halogen) have a charge of -1 and when they combine to form the formula their charges get criss crossed and we will get Mg_{1}Cl_{2} or MgCl_{2}

When an alkaline earth metal, A, reacts with a halogen, X, the formula of the Ionic compound formed should be AX_{2}


3 0
3 years ago
Analizando una biomolécula X, un científico comprueba que está formada por Carbono, Hidrógeno, Oxígeno y Nitrógeno, además de li
Cloud [144]

Analyzing a biomolecule X, a scientist verifies that it is made up of Carbon, Hydrogen, Oxygen and Nitrogen, in addition to releasing water when it joins with other similar molecules to form polymers. Considering these antecedents, it can be inferred that biomolecule X corresponds to: A Steroids B fatty acid C nucleotide D amino acid E monosaccharide (for people who dont speak spanish)

ok you answer is probably A

if wrong C maybe

~hope~

6 0
3 years ago
Write the name and formula for the chemical substance which is produced in most acid-base neutralization reactions
Minchanka [31]
Acid + base gives you salt and H2O
7 0
3 years ago
Complete the statement to describe the calcium concentration that must be maintained in human body cells. ( fill in the blank )T
erik [133]

Answer:

The calcium concentration must be greater outside the cell than inside the cell.

Explanation:

My previous answer was deleted from the explanation I provided from another website.

7 0
4 years ago
Read 2 more answers
Other questions:
  • Help science!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • One of the several oxides of tin found in the earthâs crust is 78.77% by mass tin. what is its empirical formula and name?
    15·1 answer
  • What is the frequency of light that has an energy of 1.8 x 10-15 J? 6.626 x 10-34 Js 2.7 x 1018 Hz 3.7 x 10-19 Hz 1.2 x 10-48 Hz
    8·1 answer
  • The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, Cl-35 and Cl
    10·1 answer
  • Which of the following is a true statement about heat transfer through conduction, convection, or radiation?
    7·2 answers
  • What is the formula and formula mass of potassium sulphate?
    15·2 answers
  • Select all of the BENEFITS of a PARALLEL circuit. If one bulb burns out the rest of the bulbs will stay lit. The bulbs do not ge
    5·1 answer
  • Write the molecular formulae of any 2 compounds that can be formed by the
    15·1 answer
  • [please answer fast!] If the hydroxide ion concentration is 2x10^-3 M, what is the pH of the solution? Show your working.
    13·1 answer
  • Where are these chemical reactions happening?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!