Consider the two facts below:
Fact 1: Dissolved oxygen is one of the most
important nutrients needed by fish in the aquatic
environment to survive.
Which scenarios may be explained by the facts on
the left? Check all that apply.
ID There is more dissolved oxygen in colder
waters than in warm water.
IM
Fact 2: Unlike solids, whose solubility increases
with increasing temperature, the solubility of gases
generally decreases with increasing temperature.
IND
There is less dissolved oxygen in colder
waters than in warm water.
Fish life in the ocean is more abundant during
the seaons with warmer water than seasons
with cooler water
HII
If ocean temperatures rise, then the risk to
the fish population increases.
DONE W

Answer: When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

Answer:

What happens when one adds (NH4)2S to a solution that contains Al3+?

Explanation:

When a solution that contains [tex]Al^{3+}[/tex] reacts with ammonium sulfide solution, then a precipitate of aluminum sulfide is formed.

The chemical equation for the reaction is shown below:

[tex]3(NH_{4})_{2} S(aq)+2 Al^{3+}(aq) -> Al_{2} S_3} (s) +3 NH_{4}^{+}[/tex]

Answer:

3. The proton number is 15.

Explanation:

Phosphorus, P is the element with the atomic number = 15. The atomic number = Number of protons. That means:

3. The proton number is 15.

Now, the number of protons = Number of electrons = 15.

And, nucleon number = Number of protons + number of neutrons. The must abundant phosphorus atom contains 16 neutrons and nucleon number is: 15+16 = 31.

Thus, we can know which statement is true.

Explanation:

The bond between two oxygen atoms is covalent (covalent bonding is bonding between Non metals (the electrons are shared)).

The bond between the Na and Cl (NaCl) is ionic (ionic bonding is bonding between a metal (in this case the Na) and a non metal (the Cl). This type of bonds deals with the metal losing electrons and the non metal gaining electrons. The metal therefore become positively charged (so it becomes ionic) and the non metals gain electrons and become negatively charged (also becomes ionic/ forms an ion). The opposite charges attract each other and this is why they bond.

Answer:

A

Explanation:

it releases 4

334 J/g of heat energy

hope its correct

Answer:

C. WATER VAPOUR

these are gaseous in state so gases have more entropy than other states.

nope it helps

have a nice day

Answer:

Answer is A... Melting and freezing

Answer:

Si.

Explicación:

Sí, el método de cristalización se utiliza para separar la sal del agua y obtener los componentes de la sal y del agua por separado. La cristalización es un método o técnica que se utiliza para purificar compuestos sólidos. Este proceso funciona mejor debido a las diferentes solubilidades del compuesto deseado y las impurezas que están presentes en un solvente dado. El proceso de cristalización implica enfriar agua salada para formar cristales de hielo puro. Luego, los cristales de hielo se separan de la salmuera no congelada, se lavan para eliminar la sal residual y luego se derrite la solución para producir agua dulce.

Answer:

[H2S][OH-

[HS-]

Explanation:

hope it help

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Answer:

[H2S][OH-]

_________

[HS-]

Explanation:

You welcome.

Answer:

D. Fusion

Explanation:

D. Fusion

Hope this helps! :)

Answer: b

Explanation:

I took the test

The correct answer is LiOH and Li2SO4.

A strong acid is neutralized by a strong base to yield a normal salt.

A neutralization reaction is a reaction between an acid and a base to yield salt and water only.

An acid can be strong or weak. A base can also be strong or weak.  "Strong" or "weak" has to do with the extent of ionization of the acid or base in water. Usually, a strong acid is neutralized by a strong base.

Since H2SO4 is a strong acid, it will require a strong base such as LiOH to neutralize it and the product will be the normal salt Li2SO4.

https://brainly.com/question/16255996

Answer:

Explanation:

Answer:

The errors in the case are;

1. Error; Removing the tape containing the signatures of the crime scene evidence collector, which removes the record/signature of the crime scene evidence collector in chain of custody

Correct; The original signature of the crime scene evidence collector should left on the package and the package should be opened at another location

2. Error; Placing the reseal back at the same location of the initial seal placed by the evidence collector

Correct; The package should be opened at a different area from the point in which it was sealed when it is received

3. Incorrect; Resealing the bag at the same point it was opened

Correct; On completion, the lab technician should place the evidence with the package, which was opened at a location different from its original opening, in a new package, which is then sealed and she should sign off on the evidence chain-of-custody log before bringing the evidence to the next lab technician at the lab

Explanation:

Evidence collection process requires the documentation of the specific place or spot that the evidence was located, proper evidence packaging, and maintenance of a correct chain of custody

A complete and proper chain of custody

a) Ensure the number of persons who handle the evidence is limited

b) Verify tat the chain of custody documents lists all the names, dates and identification number

c) Ensure to collect signed or secured receipt when the evidence is being transferred

Answer:

7276783

Explanation:

8765467

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Answer: 3 moles of oxygen at STP will occupy a volume of 3×22. 4=67. 2 L.

Answer:

Temperature.

Explanation:

Kinetic molecular theory of gases states that gas particles exhibit a perfectly elastic collision and are constantly in motion.

According to the kinetic-molecular theory, the average kinetic energy of gas particles depends on temperature.

This ultimately implies that, the average kinetic energy of gas particles is directly proportional to the absolute temperature of an ideal gas. Thus, an increase in the average kinetic energy of gas particles would cause an increase in the absolute temperature of an ideal gas.

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

A plane mirror is a flat piece of glass that reflects an image that is identical (or nearly identical) to the object in front of it.

Answer: The correct option is [tex]NO_2(g)[/tex]

Explanation:

A catalyst is defined as the chemical species that increases the reaction rate but does not participate in it and is left behind after the completion.

A homogeneous catalyst is one that is present in the same phase as the reactants and products.

A heterogeneous catalyst is one that is present in different phase as that of reactants and products.

For the given chemical reaction:

[tex]2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)[/tex]

As all the reactants and products are in gaseous state so, the homogeneous catalyst must also be in the gaseous state only.

Hence, the correct option is [tex]NO_2(g)[/tex]

Answer:

a

Explanation:

Answer:

0.0602g

Explanation:

60.2mg is equal to 0.0602grams.

Answer:

The lithosphere is the most outer solid portion of

he most outer solid portion ofthe planet Earth.

crust is the outermost layer of earth.

Answer:

The entropy and the systems surrounding it tend to increase.

Answer: The entropy in a system and its surroundings tends to increase.

Explanation:

3.3.2 Quiz: Entropy (a p e x)

Answer:

e) 5

Explanation:

Because it's H

C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)(propane)

CH4 + 2O2 → CO2 + 2H2O. (Methane)

2C4 H10 + 13O2 → 8CO2 + 10H2 O.(butane)

Answer:

See explanation

Explanation:

According to the particulate theory of matter, gas particles do not interact with each other. A gas is composed of isolated particles moving at high velocities and collide frequently with each other and the walls of the container.

Since the particles of a gas are mostly isolated, it is easy to compress the gas when pressure is applied thereby bringing the gas particles closer together.

On the other hand, in the solid state, the particles that compose matter are close together. These particles only vibrate about their mean positions due to strong intermolecular interaction between particles. The fact that the particles of the solid ion are so close together makes the solid iron lump to possess high density.

Answer:

Sodium is very reactive in nature. When exposed in air, it automatically forms Na2O. When it is put in water it reacts vigorously and starts burning on water. Due to the above reasons Sodium is called an active metal

Explanation: hope this helps pls mark as brainliest ty