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
True [87]
3 years ago
13

Look at the four chemical reactions. Reaction 1: 2H2 + O2 → 2H2O Reaction 2: 2NaCl → 2Na + Cl2 Reaction 3: CaO + H2O → Ca(OH)2 R

eaction 4: 4Fe + 3O2 → 2Fe2O3 Which statement identifies the reaction that is different from the rest and explains correctly why it is different? (1 point) Reaction 2, because a single reactant is decomposed Reaction 1, because two reactants have decomposed Reaction 2, because a single ion is replaced in a compound Reaction 1, because two ions have interchanged their positions
Chemistry
1 answer:
padilas [110]3 years ago
6 0

Answer: reaction 1, because a single product is formed.

Explanation: I took the test and got it right.

You might be interested in
Which actions represent endothermic reactions? Check all that apply. an instant ice pack becoming cold, splitting a gas molecule
DerKrebs [107]
Answer is: an instant ice pack becoming cold, splitting a gas molecule and baking bread.

<span>Endothermic reaction is chemical reaction that absorbs more energy than it releases.
</span>In ice pack, <span>reaction absorbs heat from the surroundings (endothermic reaction), lowering the surrounding temperature.
For splitting molecule and baking bread we must add energy to break bonds between atoms.</span>
6 0
2 years ago
Read 2 more answers
Which law was used to determine the relationship between the volume and the number of moles?​
lawyer [7]

Answer:

The Mole-Volume Relationship: Avogadro's Law. A plot of the effect of temperature on the volume of a gas at constant pressure shows that the volume of a gas is directly proportional to the number of moles of that gas. This is stated as Avogadro's law.

Explanation:

4 0
3 years ago
In a chemical reaction sodium and chlorine react to form sodium chloride. Which term names the sodium?
Damm [24]
Reactant is the answer
hope it helps
6 0
3 years ago
Read 2 more answers
What physical properties can be used to separate heterogeneous mixture's?
marysya [2.9K]
Evaporation, distillation, filtration and chromatography
Hope it help you, have a nice day
7 0
2 years ago
When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?
dalvyx [7]

Explanation:

The heat generated when chemical, transport, or mechanical work is done by the organism is lost to the environment.

The the matter from one organism to the other is transferred via energy. The producer's produce and consumer's consume this energy according to 10% law. Most of the energy is lost (90% ) to the environment in form of heat.

5 0
3 years ago
Other questions:
  • A chemical reaction that has the general formula of nA ➡ (A)n is best classified as a ___________ reaction
    5·2 answers
  • What Is the difference between organic and inorganic matter?
    10·2 answers
  • What activity is considered a proper laboratory technique chem?
    6·1 answer
  • Be sure to answer all parts. The thermal decomposition of phosphine (PH3) into phosphorus and molecular hydrogen is a first-orde
    9·1 answer
  • Write an equation for the reaction of solid aluminum metal with hydrochloric acid (hydrogen monochloride) dissolved in water to
    5·1 answer
  • n the laboratory, two forms of sodium phosphate will be available (the monobasic monohydrate NaH2PO4·H2O, F.W. = 137.99 g/mol, a
    8·1 answer
  • How many atoms are in 0.8 mols of lead?<br> show work.
    10·1 answer
  • Color , texture , and odor are all _______ of matter .
    8·2 answers
  • How r fossil fuel helpful <br> Plss help ill give brainliest
    10·2 answers
  • How many grams of carbon are contained in one mole of<img src="https://tex.z-dn.net/?f=C_%7B3%7DH_%7B8%7D" id="TexFormula1" titl
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!