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
SSSSS [86.1K]
4 years ago
6

Which of the following processes absorbs energy? A) condensation of water on a wind shield of a car B) formation of copperC) bal

l rollinflown a hill D) formation of ice from liquid water
E) oxide from copper and oxygen
Chemistry
1 answer:
Alecsey [184]4 years ago
4 0

Answer:

C) ball rollinflown a hill

Explanation:

The question asks to  identify the endothermic process in the list of options. By way of elimination, we have;

A) condensation of water on a wind shield of a car

Condensation is an exothermic process. That is, heat is given out as the gases change into the liquid state of matter.

B) formation of copper

This is an exothermic process. Capture of electrons by a cation is always exothermic.

C) ball rollinflown a hill

This is the correct option. Energy is absorbed by the ball as it moves on the hill

D) formation of ice from liquid water

Freezing is an example of exothermic reaction. Heat is given off to the surroundings.

E) oxide from copper and oxygen

Formation of metal oxides and most reactions involving oxygen are exothermic reactions,

You might be interested in
Please help ASAP!!! 6
Gnom [1K]
The answer is C I learned this in science class
5 0
3 years ago
Write a balanced chemical equation based on the following description:
kupik [55]

The balanced chemical equation for the reaction is

<h3>6Cs(s) + 2CsNO₂(s) —> 4Cs₂O(s) +  N₂(g) </h3>

From the question given above, we were told that:

solid cesium reacts with solid cesium nitrite to form solid cesium oxide and nitrogen gas.

The equation for the reaction can be written as follow:

Caesium => Cs

Caesium nitrite => CsNO₂

cesium oxide => Cs₂O

nitrogen gas => N₂

Caesium + Caesium nitrite —> Caesium oxide + Nitrogen gas

<h3>Cs + CsNO₂ —> Cs₂O +  N₂</h3>

The above equation can be balance as follow:

Cs + CsNO₂ —> Cs₂O +  N₂

There are 2 atoms of N on the right side and 1 atom on the left side. It can be balance by writing 2 before CsNO₂ as shown below:

Cs + 2CsNO₂ —> Cs₂O +  N₂

There are 2 atoms of Cs on the right side and a total 3 atoms on the left side. It can be balance by writing 6 before Cs and 4 before Cs₂O as shown below:

6Cs(s) + 2CsNO₂(s) —> 4Cs₂O(s) +  N₂(g)

Now the equation is balanced

Learn more: brainly.com/question/11502387

5 0
3 years ago
Read 2 more answers
An ion and its parent atom differ in....? 1) All of the options are correct 2) electron configuration. 3) chemical reactivity. 4
RideAnS [48]
An ion is different from its parent atom by having a different number of electrons. ... A: The octet rule describes how atoms form stable ions by gaining or losing electrons to fill their outer s and p orbitals with eight electrons.
7 0
3 years ago
How many molecules are in 3.5 moles of hydrogen
jek_recluse [69]

Answer:3.5 moles * 6.02 X 10^23 particles/mole * 2 H atoms/particle of H2 = 42.14 X 10^^23 atoms

Explanation:

7 0
2 years ago
Can a combination reaction be a redox reaction ?
saul85 [17]

Answer:

Yes A redox reaction can be a combination reaction.

Two elements are mixed in a combination reaction to produce a single product.

Explanation:

Example: water formula

2H2 + O2 → 2H2O

Oxygen is reduced in this reaction when electrons are transferred from hydrogen to oxygen and hydrogen is also oxidized since oxygen from hydrogen accepts electrons. Oxygen is the oxidizing agent and hydrogen is the reducing agent.

2H2 + O2 → 2H2O

4 0
3 years ago
Other questions:
  • The density of liquid Z is 0.9237 g/mL. A student masses a cup
    11·1 answer
  • Identify which of the bonds in calcium hydroxide, Ca(OH)2, are ionic and which are covalent.
    8·2 answers
  • Round the number 0.005758 to 3 sig figs
    15·1 answer
  • What does the element symbol on the periodic table indicate?
    9·1 answer
  • Why does the moon spin around the earth and the earth spins around the sun
    7·1 answer
  • What mass of zinc will completely react with 18.9 L of oxygen gas at 15°C and 1.50 atm pressure to produce zinc oxide. Remember
    15·1 answer
  • During mitosis, one cell creates:
    10·1 answer
  • Give an example of a rule of the natural world that a scientist can assume is always true.
    6·1 answer
  • The temperature of a plastic cup is 70ºF. It is filled with water that is 40ºF. Which of the following describes how thermal ene
    7·1 answer
  • Logan is comparing the characteristics of different types of organisms. Which best describes a difference between insects and ba
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!