All categories

4 years ago

An environmental scientist studies _______.

Chemistry

2 answers:

Assoli18 [71]4 years ago

7 0

An environmental scientist studies the environment - you can see that in the beginning of the sentence :)

olchik [2.2K]4 years ago

3 0

The ecosystem. It also studies the environment at times. But most is the ecosystem and how it works.

You might be interested in

Describe how to do an experiment to show that when you dissolve salt in water the salt is still there.

Alex17521 [72]

Answer:

When salt is dissolved in water, the particles of salt get into the spaces between particles of water and starts dissolving and disappear.

Explanation:

8 0

3 years ago

Pick the word which best completes the sentence.

aliya0001 [1]

Answer:

ccc

AMOUNG US AND THE ANSWER IS C

Explanation:

6 0

2 years ago

Which notation represents the largest atomic radius? Cl F F− Cl−

hichkok12 [17]

Answer:

Cl⁻

Explanation:

Definition of atomic radii

The atomic radius is the distance between center of two bonded atoms.

Trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase.The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases.

Trend along group:

In group by addition of electron atomic radii increase from top to bottom due to increase in atomic number and addition of extra shell.

In this way Cl⁻ will have the largest atomic radii because one extra electron is added and its atomic number is already greater than fluorine.

5 0

4 years ago

A plant dying after being exposed to poison represents a physical change. (2 points)

Anna35 [415]

False

Explanation:

A plant will die after being exposed to poison does not represent a physical change. A physical change is one that alters the physical state of matter and leads to no formation of new substances.

The plant dies due to chemical changes in its structure.
The poison will react with the chemicals in the system of the plant to produce new harmful ones.
In a chemical change, new kind of substance forms in the plant and the change is irreversible.

Learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

8 0

3 years ago

Read 2 more answers

Consider four different samples: aqueous NaBr, molten NaBr, aqueous NaF, and molten NaF. Current run through each sample produce

EastWind [94]

Answer:

Aqueous NaBr - oxygen gas

Molten NaBr - liquid bromine

Aqueous NaF- oxygen gas

Molten NaF - Flourine gas

Explanation:

In electrolysis process, anode is the positive electrode and cathode is the negative electrode.

Hence negative ions are attracted towards anode and gets oxidized.

When more than one type of ion is present , the ion which gets deposited is decided by the discharge potential.

Discharge potential is the voltage at which an ion is discharged.The ion that requires less energy to get deposited has low discharge potential.

Hence ion with low discharge potential gets deposited.

Discharge potential is in the order: $F^->Br^->OH^-$

In aqueous NaBr , there are two negative ions:Br- and OH-

OH- is oxidized to oxygen gas as OH- has lower discharge potential.

2. In molten NaBr, Br- is the only negative ion and liquid bromine is produced at anode.

3. In aqueous NaF, OH- and F- are the anions present. Clearly oxygen gas is produced at anode as OH- has lower discharge potential.

4. In molten NaF only anion present is F- and hence flourine gas is produced at anode.

7 0

3 years ago