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
oee [108]
2 years ago
5

Which of the following is an example of a chemical reaction?

Chemistry
1 answer:
grandymaker [24]2 years ago
4 0

Answer:

D: dissolving salt in water

You might be interested in
How many liters are in 2.36 gallons?
VladimirAG [237]

Answer:8.933572

Explanation:

for an approximate result, multiply the volume value by 3.785

5 0
2 years ago
Read 2 more answers
A sample of a compound that contains only the elements C, H, and N is completely burned in O₂ to produce 44.0 g of CO₂, 45.0 g o
koban [17]

Answer:

CH₅N

Explanation:

In the combustion, all of the C in the compound was used to produce CO₂ in a 1:1 ratio. Thus, the moles of CO₂ (MW 44.01 g/mol) produced equals the moles of C in the compound:

(44.0 g)(mol/44.01g) = 0.99977 mol CO₂ = 0.99977... mol C

Similarly, all of the H in the compound was used to produce H₂O in a ratio of 2H:1H₂O. The moles of H₂O (MW 18.02 g/mol) produced was:

(45.0 g)(mol/18.02g) = 2.497...mol H₂O

Moles of H is found using the molar ratio of 2H:1H₂O:

(2.497...mol H₂O)(2H/1H₂O) = 4.994...mol H

The ratio of H to C in the compound is:

(4.994...mol H)/(0.99977... mol C) = 5 H:C

Some NO₂ was produced from the N in the compound. Assuming a 1:1 ratio of C:N, the simplest empirical formula is: CH₅N.

3 0
2 years ago
Assertion: Atomic mass of aluminium is 27 Reason: An atom of aluminium is 27 times heavier than 1 / 12th of the mass of the C –
Korvikt [17]

Answer:

i is the correct answer.

Explanation:

the RAM of aluminum is indeed 27. And since the RAM of substances are measured in terms of the C-12 isotope then R indeed explains why the RAM Al is 27.

5 0
3 years ago
Which letter in the diagram above represents a mountain range in the ocean floor
DIA [1.3K]

THE QUESTION:which letter in the diagram above represents a mountain range in the ocean floor  

A.Letter B  

B.letter D  

C.letter E  

D.letter F

THE ANSWER: Based on my research, none of these are truly correct, as A is actually correct. However, I would highly suggests going with B, as it resembles mountains in shape.

5 0
3 years ago
If the gold in the crown was mixed with a less-valuable metal like bronze or copper, how would that affect its density?
Sindrei [870]

Answer: If the gold in the crown was mixed with a less-valuable metal such as bronze of copper then this affects its density by making it to weigh even more and if it weighs more then it has less of chance to float. Observe: Drag each of the crowns into the liquid.

Explanation:

6 0
2 years ago
Other questions:
  • For the reaction of oxygen and nitrogen to form nitric oxide, consider the following thermodynamic data (Due to variations in th
    11·1 answer
  • this a domain of prokaryotic cells possessing diacyl glycerol diester lipids in their membranes, bacterial RNA, no nuclear membr
    14·1 answer
  • Use Table 1 below to answer the following question: Scientists find a piece of wood that is thought to be from an ancient fire c
    15·1 answer
  • How many oxygen atoms are in an ozone molecule?
    13·1 answer
  • Which state of matter will have a greater force of intermolecular attraction?
    15·1 answer
  • Explain the concept of molar mass.
    6·1 answer
  • Why do you think they stilk proruxe bright flowers to attract bees?
    13·2 answers
  • Q5. Why are some salts acidic when others are neutral?
    15·1 answer
  • A chemist reacts 30.0 mL of 5.6 M HCl with an excess of Mg(OH)2 How many grams of magnesium will be produced
    8·1 answer
  • Part G
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!