brainliest to whoever answers, correctly.

Answer:

(At)halogen

(N)nonmetal only

(Kr)Nobel gas

(CI)halogen

(S)nonmetal only

Explanation:

Answer:

(At): Halogen

(N): Nonmetal only

(Kr): Noble Gas

(Cl): Halogen

(S): Nonmetal only

Explanation:

Took the test on edge!

Sorry if its wrong but it shouldnt be.

Please give brainliest <3

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

density of mercury = 13.6 g/cm³

First we must convert the volume from mL to cm³

if 1 mL = 1 cm³

Then 8.20 mL = 8.20 cm³

volume = 8.20 cm³

The mass of mercury is

mass = 13.6 × 8.2

We have the final answer as

Hope this helps you

Answer:

Brittle

Explanation:

Its the most easy thing to break.

The substance that breaks easily or shatters is brittle. As malleable and ductile are hard in nature and volatiles are types of solute. Thus, option B is correct.

These substances are hard and rigid but contain little tensile strength that is they can be broken down into pieces easily on applying a little amount of pressure.

They have little deformation and poor capacity for conduction of current with high compressive strength and low tensile strength.

On applying pressure they fracture with little elastic deformation and some examples of it are some alloys with low plasticity, glass, and graphite. Their breaking is also known as brittle breakage.

Ductile are stiff and unable to break and the volatiles are type of solute easily dissolve in water malleable and are unbreakable or difficult to break. These all are the bad conductor of electricity.

Therefore, brittle is the substance among these which breaks. Thus, option B is correct.

Learn more about brittle substances, here:

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Answer:

The answer is D

Answer:

gases is 2

particles are 3

and the 3rd question is 1

Explanation:

Bernoulli's principle states that gas is a tiny particle that is not visible to the eyes, but particles move when displaced by some factors. Thus, the correct matches are a. 2, b. 3, and c. 1.

Bernoulli's principle states the kinetic molecular theory of gases. According to the theory, gas particles are small and are far away from each other. But they move from their position due to the fluid dynamics when objects pass through them. Hence, option a. 2 is correct.

Democritus stated about the matter is made of various constituents particles. He is known as the "Father of science" as gave the idea of matter comprising atoms. Hence, option c. 1 is correct.

Joseph Priestley proposed about the new substance formed by breaking or creating the bonds between the reactants. According to him, gases are made of particles that can be a mixture. Hence, option b. 3 is correct.

Learn more about Bernoulli's principle here:

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Answer:

The last option is the correct option

Explanation:

Laboratory equipment and work benches are cleaned (and stored properly in the case of equipment) after use so as to keep them free of the purpose it has been used for, which if not done, could lead to various undesirable events/aftermath. For example, if dyes or grease is used in a process in the laboratory, these compounds need to be washed off the glasswares (like measuring cylinder) it was poured in during the course of the experiment to prevent the glassware from retaining some of it's residual particles hence contaminating the glassware for future laboratory use. Cleaning must be done on the surfaces the experiment was carried out also for the same reason.

Hence, the correct option is the possibility of contamination in the laboratory is minimized.

Answer:

It is D

Explanation:

last brainliest

Answer:

A. humans going underwater and exhaling

Explanation:

Dissolved oxygen is the oxygen content that can be found in a water body. Oxygen is a gaseous component that dissolves readily in water, however, oxygen dissolves in water via the following sources including diffusion from the atmosphere, aeration as water moves over rocks and debris, and from wind and wave, photosynthesis of aquatic plants.

Humans like every other living organism will undergo cellular respiration and release CO2 (carbon dioxide gas) as a a product during exhalation. Hence, humans going underwater and exhaling cannot be a source of dissolved oxygen.

Answer:

C

Explanation:

Dalton's atomic theory are: Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass.

Dalton's atomic theory opines that atoms of the same element are identical in size, mass, and other properties and are different from atoms of other elements.

In addition, Dalton theorized that atoms can neither be created nor destroyed, and they are the smallest indivisible particle of elements.

He also proposed that atoms of different elements are also able to combine in whole number ratio to form compounds.

More on Dalton's atomic theory can be found here: https://brainly.com/question/13157325?referrer=searchResults

Answer:

d. The acid is likely to eat through the can.

Explanation:

Aluminium is a metallic element found in group 3 of the periodic table. Aluminum is a very reactive metal owing to the fact that it reacts with almost every substance it comes in contact with e.g air, acids, bases etc.

In this question where Derek stores his Hydrochloric acid (HCl) remnant, after an experiment, into a can made of aluminum. What will happen is that the acid is likely going to eat through the can. This might occur gradually but will eventually. Aluminum protects itself from further reactions by forming a layer of Aluminum oxide (Al2O3) when it reacts with air.

This is what keeps the reaction with HCl gradual but the acid will eventually permeate the layer and corrode the aluminum can by reacting with the aluminum.

Answer:

Yes

Explanation:

A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.

CLOUDS would be one of the interacting parts in a weather system.

Answer:

1398.4

Explanation:

Use a calculator

Honestly didnt even need to

Answer:

The primary purpose of erosion control blankets is to keep soil from shifting or moving. They help stabilize soil particles and sediments, holding them in place to prevent sliding due to water, wind or other natural causes.

Explanation:

Answer:

Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.

Explanation:

Hope this helps :D

Answer:

subduction

Explanation:

hope this helps

Explanation:

The pH of a substance can be found by using the formula

[tex]pH = - log[ H^{ + } ][/tex]

where [ H+ ] is the hydrogen ion concentration in the substance

From the question

[ H+ ] = 2.1 × 10-¹² M

To find the pH substitute the value into the above formula

We have

[tex]pH = - log(2.1 \times {10}^{ - 12} ) \\ = 11.6777807 \: \: \: \: \: \: [/tex]

We have the answer as

The solution is basic since it lies in the basic region that is from 8 to 14

Hope this helps you

Answer:

Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. ... Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass

Answer:

Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass.

Answer:le système international d’unite(SI)

Explanation:

Answer:

$75

Explanation:

32(2.5) = 80 slices

80 slices / 8 slices = 10 pizzas

10/2 = 5 two pizza deals

5 x 15 = $75

Explanation:

Density: mass/volume

8.7/15= 0.58 grams per milliliter

This answer can't be accurate because the question doesnt state the initial volume of water and the mass of the graduated cylinder itself

Answer:

Protons

Neutrons

Electrons

Explanation:

Answer:

6 miles.

Explanation:

There is a lot of decimal points after it. But you just need to convert everything. But if you round it to the nearest whole, it would be 6 miles.

Answer:

Ex1,000,000 Centimeters =

6.2137119 Miles

planation:

Answer:

When you heat something up, it makes the molecules move faster. ... When this happens, all of the molecules go flying apart and become a gas (like when you boil water to make steam). The process of gas molecules leaving the liquid to go into the gas is called "evaporation." The opposite process is called "condensation.

Answer:

Hi there!

Your answer is

Mass: 12

&

Electrons:5

Explanation:

The electrons in a neutral atom is the same as the # of Protons!