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
Hitman42 [59]
3 years ago
5

Checking the dining areas of an eating establishment for evidence of flaking paint, broken light bulbs, and wood damage will red

uce the chances of:
Chemistry
2 answers:
alukav5142 [94]3 years ago
6 0
Physical contamination
tino4ka555 [31]3 years ago
3 0

Taking look at the dining areas of an eating establishment for the proof of broken light bulbs, flaking paint, and wood damage will minimize the occurrences of physical contamination of food. Physical contamination takes place when the actual objects like hair, glass, dirt, paint, and other physical contaminants contaminate the food.  

Various food safety guidelines had been developed by the Food and Drug Administration to make sure the public safety of food in the restaurants and other public eateries.  


You might be interested in
Which of the following is most likely to dissolve in NH3? A) CO2 B) CH4 C) H2S D) BH3
dem82 [27]

Answer:

C) H2S

Explanation:

In chemistry, the dissolution of one substance in another is dependent on the magnitude of intermolecular interaction between the two substances.  Hence, if two substances do not interact in one way or the other, then one can not dissolve the other.

Let us consider the fact that NH3 is a polar molecule and it is a general principle that like dissolves like. Hence, only H2S which is also a polar molecule can effectively interact with  NH3 due to dipole-dipole interaction between the two molecules.

Also, ammonia reacts with hydrogen sulphide as follows;

2NH3 + H2S → (NH4)2S

Hence H2S is more likely to dissolve in NH3.

5 0
3 years ago
A chemist measures the enthalpy change ?H during the following reaction: Fe (s) + 2HCl (g) ? FeCl2 (s) + H2 (g) =?H?157.kJ Use t
erik [133]

Correct Question:

A chemist measures the enthalpy change ΔH during the following reaction: Fe(s) + 2HCl(g)-->FeCl2(s) + H2 ΔH=-157.0 kJ. Use this information to complete the table below. Round each of your answers to the nearest kJ/mol

Answer:

-314 kJ

+628 kJ

+157 kJ

Explanation:

The enthalpy change of a reaction measures the amount of heat that is lost or gained by it. If ΔH >0 the heat is gained, and the reaction is called endothermic, if ΔH<0, the heat is lost, and the reaction is called exothermic.

If the reaction is inverted, the value of ΔH is inverted too (the opposite endothermic reaction is exothermic), and if the reaction is multiplied by a constant, ΔH will be multiplied by it too.

1) 2Fe(s) + 4HCl --> 2FeCl2(s) + 2H2(g)

This reaction is the product of the given reaction by 2, so

ΔH = 2*(-157) = -314 kJ

2) 4FeCl2(s) + 4H2(g) --> 4Fe(s) + 8HCl(g)

This reaction is the inverted reaction given multiplied by 4, so

ΔH = 4*(157) = +628 kJ

3) FeCl2(s) + H2(g) --> Fe(s) + 2HCl

This reaction is the inverted reaction given, so

ΔH = +157 kJ

4 0
3 years ago
Antoine Lavoisier burned metals in sealed jars. What is your prediction of his experimental results?
Aliun [14]

Answer:

The mass of the jar and contents remained the same after the metal was burned.

Explanation:

My prediction about the experimental results is that  the mass of the jar and contents remained the same after the metal was burned in the jar.

This is compliance with the law of conservation of mass which states that in a chemical reaction, matter is neither created nor destroyed by bonds are rearranged for new compounds to form.

  • In compliance with this law, it is expected that the mass of the jar and its content will remain the same before and after the reaction.
  • No new material was added and no material was removed from the jar.
8 0
3 years ago
which of the following is an electronic device that measures ph? a. a ph meter b. a molarity meter c. a hydroxide meter d. a hyd
NARA [144]
<span>Which of the following is an electronic device that measures pH?

</span><span>a. a pH meter</span>
4 0
3 years ago
True or False, Atoms with fewer then 4 outer electrons lend electrons
hammer [34]

Answer:

true

I think please thanks

6 0
2 years ago
Read 2 more answers
Other questions:
  • Given these reactions, where X represents a generic metal or metalloid 1) H2(g)+12O2(g)⟶H2O(g)ΔH1=−241.8 kJ 1) H2(g)+12O2(g)⟶H2O
    7·1 answer
  • 10) A student’s calculation w as found to have a 15.6% error, and the actual value w as determined to be 25.7 mL. W hat are the
    15·1 answer
  • SOMEONE JUST PLEASE HELP MEE
    7·2 answers
  • Determine a planet from our solar system is located far from the sun. Describe the size and composition of this planet
    11·2 answers
  • A 5.345g sample of NaHCO3 is dissolved in enough water to make 300.0ml of solution. What is the molarity
    9·1 answer
  • Newton’s first law of motion states that an object at rest stays at rest,and an object in motion stays in motion,unless acted on
    6·1 answer
  • If a plant has a total of 17g of carbon dioxide and water reacting in photosynthesis, then how much glucose and oxygen will the
    12·2 answers
  • What type of bonding exists between the carbon atoms to create diamond ?
    15·1 answer
  • Show the complete ionic equation and net ionic equation for all the equations below, then state whether or not a precipitate (in
    7·1 answer
  • What is the rate of a reaction if the value of kis 3 and [A] and [B] are each 2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!