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
muminat
3 years ago
10

As part of an investigation, students combined substances in a beaker to observe chemical reactions. They performed two procedur

es. They measured the mass of each substance before and after each reaction. The table shows their observations. Assuming the students did not make any careless errors, what likely explains these changes in mass?
Question 3 options:

Procedure 1: All the reactants were liquids that evaporated. Procedure 2: A gas was formed as one product, and it escaped into the air.

Procedure 1: One of the reactants was converted to thermal energy. Procedure 2: All the products were liquids.

Procedure 1: The reactants were liquids with different densities. Procedure 2: The reactants were combined into only one product.

Procedure 1: One of the products was a gas that escaped into the air. Procedure 2: A gas from the air reacted with one of the other reactants.
Chemistry
2 answers:
lara31 [8.8K]3 years ago
6 0
The 2 one i think so if not the last one
Alekssandra [29.7K]3 years ago
5 0

Answer:

D

Explanation:

You might be interested in
Why is it difficult to undergo nucleophilic substitution in haloarene?​
goldenfox [79]

Answer:

In Haloarenes the C atom to which the X group is attached is SP2 hybridized thus it is become difficult to replace it by the Nucleophile. Since arenes and Vinyl halides are electron rich molecules due to presenceof n bonds, they repel Nucleophile attacking them.

8 0
3 years ago
What are some advantages and disadvantages to the acid rain management techniques?
mr_godi [17]
Disadvantages of acid rain:
• Acid rain affects the fresh water ponds and lakes and destroys the aquatic life as some species of fishes are rare and may be extinct
• it can affect the trees particularly those that are high altitude
• It can damage historical monuments and buildings
•soil can be affected and can lead to deaths of good microbes

Advantages of acid rain:
• it makes holes in limestone below ground, which creates caves and places to store groundwater, as well as providing habitat for some species
• But the new study shows that sulfuric in acid may have benefits, limiting global warming by counteracting the natural production of methane gases by microbes in wetland areas.

Of course you should do more studying on acid rain but these are the simple ones
5 0
3 years ago
Read 2 more answers
How does the location of mesosaurus fossils support the theory of continental drifts?<br>​
Ratling [72]

Answer:

For this reason, the existence of Mesosaurus helps support the theory of continental drift; that is, the now-well-attested fact that South America and Africa were joined together into the giant continent Gondwana 300 million years ago before the continental plates supporting them broke apart and drifted.

Explanation:

3 0
2 years ago
Please help its difficult
Likurg_2 [28]

Answer:

pounds

pounds pounds pounds

8 0
2 years ago
What type of bond does hydrogen and carbon form
laila [671]
Covalent bond , hopefully this help :) explanation : .....
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of tge following is an example of a chemical change
    14·1 answer
  • Which of the following suggests that a physical change has taken place in an ice cube
    6·1 answer
  • Neptunium's only naturally occurring isotope, 23793np, decays by emitting one alpha particle, one beta particle, and one gamma r
    8·1 answer
  • An object's mechanical energy is the sum of its
    13·1 answer
  • Hydrogen and oxygen atoms react to form water by __________ electrons.
    14·1 answer
  • Assume that the NO, concentration in a house with a gas stove is 150 pg/m°. Calculate the equivalent concentration in ppm at STP
    11·1 answer
  • I turn the Ritz into a poor house
    5·1 answer
  • Consider the reaction 3O2(g) 2O3(g) At 298 K, the equilibrium concentration of O2 is 1.6 x 10^-2 M, What is the equilibrium cons
    14·1 answer
  • What is the amplitude of a wave?
    15·1 answer
  • What structure do bacteria cells have
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!