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
Alborosie
3 years ago
14

Before allowing an employee to enter an excavation at least four feet deep in must be tested for oxygen deficiency and toxic fum

es. True or false
Chemistry
2 answers:
DIA [1.3K]3 years ago
6 0

Answer:

The given statement is true.

Explanation:

As one goes deeper to the ground, there would be less availability of air and space for the air to come in. This signifies that the concentration of oxygen on the lower section of the excavation seems to be less in comparison to the upper ground. The deeper ground would also seem to comprise gas and oil that got developed by the millions of years’ procedure. These resources seem to be dangerous and toxic to get close by without gearing protective masks.

shepuryov [24]3 years ago
4 0
The answer to your question is True

You might be interested in
Identify the reaction type and the products. Al+F2 ->
Lady bird [3.3K]

Answer:

redox and AlF2

Explanation:

4 0
3 years ago
Hydrochloride acid +_________ zinc chloride +hydrogen​
Klio2033 [76]

Answer:

Hydrochloride acid + Zinc = Zinc Chloride + Hydrogen

Explanation:

When Hydrochloride acid and Zinc react, it results in the formation of Zinc chloride and hydrogen.

<em>Hope I helped</em>

3 0
2 years ago
Which property determines whether an acid is weak or strong?
julsineya [31]

Answer:

The property that determines whether an acid is weak or strong is its ability to dissociate and form ions.

Explanation:

8 0
3 years ago
Read 2 more answers
The purpose of the salt bridge in an electrochemical cell is to ____.
IgorLugansk [536]

Answer:

A. maintain electrical neutrality in the half-cells via migration of ions

Explanation:

Salt bridge -

For an electrochemical reaction , involving an anode and a cathode , both the electrodes are connect via a salt bridge to complete the circuit for the reaction .

One of the very important use of a salt bridge is to maintain the electrical neutrality of the respective half cells , which is achieved by the movement of ions .

Hence , from the given options , the correct option is ( a ) .

8 0
3 years ago
What happens when The vapour obtained by dropping conc. H2SO4 in a mixture of KI and MnO2 is treated with hypo solution​
Shalnov [3]

Iodine is decolorized.

The first reaction stated in the question occurs as follows;

2 KI (aq) + 2 H2SO4 (aq) + MnO2 (s) → MnSO4 (aq) + K2SO4 (aq) + I2 (s) + 2 H2O (l)

The reaction here is the formation of iodine from MnO2 and KI in the presence of dropwise H2SO4.

Hypo is the common name of sodium thio-sulphate or sodium hypo-sulfite.

The equation of the titration reaction is;

2Na2S2O3 + I2→ Na2S4O6 + 2NaI

When this reaction takes place, iodine is decolorized due to its reduction to I^-.

6 0
2 years ago
Other questions:
  • Write the formula and name of the compound formed from the following ionic interactions:
    13·1 answer
  • Element X reacts with hydrogen gas at 200°C to form compound Y. When Y is heated to a higher temperature, it decomposes to the e
    15·1 answer
  • What do a mole of magnesium and a mole of iron have in common
    10·1 answer
  • 1)How can scientists use a seismograph to determine the density and depth of Earth's layers?
    15·1 answer
  • What is true about energy?
    6·2 answers
  • Suppose a star is undergoing a nuclear reaction. What happens to the elements around the star as it begins to emit more and more
    6·2 answers
  • What is the purpose of neutron radiation?
    11·1 answer
  • Which of the following is a physical or chemical characteristic of a mineral?
    9·1 answer
  • Explain how astronomers use spectrographs to identify the composition of a star.
    6·1 answer
  • What types of radiation cause the parent isotope to change into a different element?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!