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
AlekseyPX
2 years ago
6

A student added 3 gms one substance in a beaker and then added 4 gms of another substance. A chemical reaction took place in the

uncovered beaker, after the reaction the beaker weighed 5 gms which of the following is the best explanation?
A Some of the mass of the reactants was lost as heat and evaporated into the air.
B. The reaction produce a gas as a product.
C. Some of the reactantants were destroyed as when the chemicals were added.
Chemistry
1 answer:
Alika [10]2 years ago
4 0

Answer:

B. The reaction produce a gas as a product.

Explanation:

According to the law of conservation of mass, the total mass of reactants must be equal to the total mass of products because mass is neither created nor destroyed in a chemical reaction.

The total mass of the reactants is 7 grams. The total mass of the products and the beaker is 5 grams. This means that the mass of products is less than the mass of reactants.

The only plausible explanation for this is that the reaction produced a gaseous product which escaped because the system is an open system thereby leading to a  lesser measured mass of products since mass can not be created nor destroyed.

You might be interested in
Something that dissolves in liquid <br><br>solven<br> solute<br> solution ​
Feliz [49]

Answer: solute

Explanation:

6 0
3 years ago
What would the products be for the reaction between Na3PO4 + MgSO4?
ivann1987 [24]

MgSO4 + Na3PO4 = Na2SO4 + Mg3(PO4)2

Answer: The products of Na3PO4 + MgSO4 are Na2SO4 + Mg3(PO4)2

Explanation:

7 0
3 years ago
HELP HELP HELP PLSSS
andrew11 [14]

Answer:

the answer is c kept in blue and with light

7 0
3 years ago
16. What is a pure substance formed when two or more different elementscombine called?A. compoundB. moleculeC. element
Lana71 [14]
<h2>Answer:</h2>

Compound. Option A is correct

<h2>Explanations:</h2>

When two or more different elements combines, a compound is formed. For instance, if carbon and oxygen combines, carbondioxide is formed according to the equation;

C+O_2\rightarrow CO_2

From the reaction, carbon and oxygen are the elements while carbondioxide is the compound. Hence we can conclude that a pure substance formed when two or more different elements combine called compound.

3 0
1 year ago
What are the rules for naming hydrocarbons?
GrogVix [38]

Answer:

IUPAC Rules for Alkane Nomenclature

Find and name the longest continuous carbon chain.

Identify and name groups attached to this chain.

Number the chain consecutively, starting at the end nearest a substituent group.

Designate the location of each substituent group by an appropriate number and name.

Explanation:

3 0
3 years ago
Other questions:
  • Football Player Position Mass (kg) Velocity (m/s) Half back 60 8 Tight end 90 6 Full back 110 5 Lineman 120 3 Based on the data
    11·2 answers
  • List the number of protons, neutrons, and electrons in... ( there is a pic)
    8·1 answer
  • You are given a 1.00 molal solution of an unknown solute dissolved in water and told that you must determine if the solute is a
    14·1 answer
  • What element is represented by the electron configuration [ar]4s23d8?
    14·1 answer
  • How many grams of ammonium chloride (gram formula mass= 53.5 g) are contained in .500 L of a 2.00 M solution?
    11·1 answer
  • What is the surface tension of H20
    8·2 answers
  • Sort the phrases based on whether they describe or give an example of diffusion, facilitated diffusion, both, or neither. note:
    13·1 answer
  • . Describe the movement of the Earth, The moon and the sun?
    5·2 answers
  • Has any one done 2020 chemistry paper 1 aqa gcse
    12·1 answer
  • Burning something is always a chemical change that requires a fuel and
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!