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2 years ago

You work for a company focused on environmental cleanup. Your job is to collect soil samples in the field and bring

Chemistry

1 answer:

Harman [31]2 years ago

8 0

Answer:

Environmental chemistry and analytical chemistry

Explanation:

Environmental chemistry is a scientific study of chemical species in the environment as well as the cycle of materials in nature. Broadly speaking, environmental chemistry involves the study of the sources, reactions, transport, and fates of chemical species in the environment.

Analytical chemistry is a branch of chemistry that deals with the development and use of tools and methods to carry out investigation into the nature and composition of chemical substances.

Both environmental chemistry and analytical chemistry are involved when you collect soil samples for the purpose of analysis. A work focused on environmental clean up must first be concerned with the fate of species in the environment (environmental chemistry) as well as the identification of various contaminants in the environment (analytical chemistry). Hence the answer.

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10. Which one of the following statements about sulfuric acid is correct? A. Sulfuric acid has little effect on metals.

Orlov [11]

C. Sulfuric acid is a strong oxidizing agent.

7 0

3 years ago

How are some of The physical properties of metals related to the fact that our study supply of electricity is able to reach our

julsineya [31]

I'm pretty sure the answer would be that the metal is conductive, which travels through the copper wires.

7 0

3 years ago

Given the partial equation: NO3− Pb2 → NO2 Pb4 , balance the reaction in acidic solution using the half-reaction method and fill

Fed [463]

Answer : The balanced reaction in acidic solution is,

$2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O$

Explanation :

The given partial equation is,

$NO_3^-+Pb^{2+}\rightarrow NO_2+Pb^{4+}$

First we have to separate into half reaction. The two half reactions are:

$NO_3^-\rightarrow NO_2$

$Pb^{2+}\rightarrow Pb^{4+}$

Now we have to balance the half reactions in acidic medium, we get:

$NO_3^-+2H^++1e^-\rightarrow NO_2+H_2O$ ............(1)

$Pb^{2+}\rightarrow Pb^{4+}+2e^-$ ............(2)

Now we have to balance the electrons of the half reactions. When we are multiplying the equation (1) by 2, we get

$2NO_3^-+4H^++2e^-\rightarrow 2NO_2+2H_2O$ ...........(3)

Now we have to add both the half reactions (2) and (3), we get the final balanced chemical reaction.

$2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O$

3 0

3 years ago

Which of the following terms is a term that could refer to heterogeneous matter? a. element b. mixture c. compound d. solution

kupik [55]

Answer : b. mixture

<h3>Further explanation</h3>

Element and compound are included in pure substance where the composition is the same in each part

Elements are made up of 1 type of atom, while the compounds of 2 or more types of atoms , both can be represented in the form of chemical symbols

A mixture is a combination of substances. The properties of a substance in the mixture component are unchanged

The mixture can be a homogeneous mixture or a heterogeneous mixture

the homogeneous mixture if each part has the same composition

the heterogeneous mixture if each part has a different composition

Solution including into Homogeneous mixture, while suspension into a heterogeneous mixture

So a term that could refer to heterogeneous matter : b. mixture

6 0

2 years ago

During a science investigation, a sample of matter breaks down into two kinds of atoms. Was the original sample an element or a

nevsk [136]

The original sample was a compound because it was composed of two different elements and was not purely one element

3 0

2 years ago