How many significant figures are contained in the quantity 14.00 mL?

Answer:

e. electrons and protons

Explanation:

Ions are atoms that have gained or lost electrons.

Taking into account the definition of density, the density of the cubic block of ice is 1.077 [tex]\frac{grams}{cm^{3} }[/tex]

In first place, density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is the relationship between the mass of a substance (or a body) and its volume. It is an intrinsic property of matter, since it does not depend on the amount of substance that is considered.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

[tex]density=\frac{mass}{volume}[/tex]

In this case, you know:

Replacing in the definition of density:

[tex]density=\frac{1400 grams}{1300cm^{3} }[/tex]

Solving:

density= 1.077 [tex]\frac{grams}{cm^{3} }[/tex]

Finally, the density of the cubic block of ice is 1.077 [tex]\frac{grams}{cm^{3} }[/tex]

Learn more about density:

hi <3

compound are 2(or more) elements combined together

thus your answer will be picture I

hope this helps <3

Explanati  la materia el convino

es carbón ya irogno

ed

Molar Mass of Calcium carbonate:-

[tex]\\ \sf\longmapsto CaCO_3[/tex]

[tex]\\ \sf\longmapsto 40u+12u+3(16u)[/tex]

[tex]\\ \sf\longmapsto 52u+48u[/tex]

[tex]\\ \sf\longmapsto 100u[/tex]

[tex]\\ \sf\longmapsto 100g/mol[/tex]

[tex]\boxed{\sf No\:of\;moles=\dfrac{Given\:Mass}{Molar\:Mass}}[/tex]

[tex]\\ \sf\longmapsto No\:of\;moles=\dfrac{10}{100}[/tex]

[tex]\\ \sf\longmapsto No\:of\:moles=0.1mol[/tex]

Now

[tex]\boxed{\sf No\:of\:molecules=No\;of\:moles\times Avagadro\: No}[/tex]

[tex]\\ \sf\longmapsto 0.1\times 6.023\times 10^{23}[/tex]

[tex]\\ \sf\longmapsto 6.023\times 10^{22}molecules[/tex]

Answer:

A. an equal and opposite reaction force

Explanation:

This means that there is a natural reaction of force

Answer:

The planet Neptune inspired the name of the element Neptunium.

Dmitri Mendeleev, who created one of the earliest periodic tables, was the source of the name of the element Mendelevium.

A scientist who is studying cancer with the goal of finding an effective treatment is doing applied research.

Applied research refers to scientific investigations that are conducted with the specific purpose of solving practical problems or improving existing technologies. In the case of cancer research, the scientist is aiming to find a treatment that can be directly applied to patients in order to combat the disease.

In contrast, pure research, also known as basic or fundamental research, is conducted to gain a deeper understanding of a particular phenomenon without any immediate practical application in mind. Pure research aims to expand scientific knowledge and explore new theories or concepts. While pure research may indirectly contribute to the development of applied research, its primary goal is to advance our understanding of the natural world.

In summary, a scientist studying cancer with the goal of finding an effective treatment is engaged in applied research, as they are conducting research with the intention of solving a specific problem and developing practical solutions for the benefit of cancer patients.

Learn more about applied research,here:

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0.3×100cm=300cm

300cm×10mm=3000

Answer:

whaen an neutal atom lose an electron and gain positive charge

Electron Configuration table:-

[tex]\boxed {\begin{array}{|c|c|c|c|cccc|}\cline {1-8}\sf Element & \sf Symbol & \sf Valency & \sf{Atomic\:Number} & & \sf{Electron} & \sf Configuration & \\ \cline {5-8} &&&&\bf K&\bf L &\bf M&\bf N \\ \cline {1-8}\rm Hydrogen &\sf H & 1 & 1 & 1 &&& \\ \cline {1-8}\rm Helium &\sf He & 0 & 2 & 2 &&& \\ \cline {1-8}\rm Lithium &\sf Li & 1& 3 &2 &1 && \\ \cline {1-8}\rm Beryllium &\sf Be & 2 & 4 & 2 & 2 && \\ \cline {1-8}\rm Boron &\sf B & 3 & 5 & 2 & 3 && \\ \cline {1-8}\rm Carbon & \sf C & 4 & 6 & 2 & 4 && \\ \cline {1-8}\rm Nitrogen &\sf N & 3 & 7 & 2 & 5 && \\ \cline {1-8}\rm Oxygen &\sf O & 2 & 8 & 2 & 6 && \\ \cline {1-8}\rm Fluorine &\sf F & 1 & 9 & 2 & 7 && \\ \cline {1-8}\rm Neon & \sf Ne & 0 & 10 & 2 & 8 && \\ \cline {1-8}\rm Sodium &\sf Na & 1 & 11 & 2 & 8 & 1 &\\ \cline {1-8}\rm Magnesium &\sf Mg & 2 & 12 & 2 & 8 & 2 & \\ \cline {1-8}\rm Aluminium &\sf Al & 3 & 13 & 2 & 8 & 3 & \\ \cline{1-8}\rm Silicon &\sf Si & 4 & 14 & 2 & 8 & 4 & \\ \cline {1-8}\rm Phosphorus &\sf P & 3 & 15 & 2 & 8 & 7 & \\ \cline {1-8}\rm Sulphur &\sf S & 2 & 16 & 2 & 8 & 8 & \\ \cline{1-8}\rm Chlorine &\sf Cl & 1 & 17 & 2 & 8 & 8 &1 \\ \cline {1-8}\rm Argon &\sf Ar & 0 & 18 & 2 & 8 & 8 & 2 \\ \cline {1-8}\rm Potassium &\sf K & 1 & 19 & 2 & 8 & 8 &3 \\ \cline {1-8}\rm Calcium &\sf Ca & 2 & 20 & 2 & 8 & 8 & 4 \\ \cline{1-8} \end {array}}[/tex]

Answer: 300mm

Explanation:

30cm x (10mm/1cm) x (1mm/1mm) = 300mm

Btw, I'm not sure about the (1mm/1mm).

Answer:2293

Explanation:

28.3*22.2*3.65=2293.149

=2293 1sf

Answer:

a chemical property

Explanation:

Each element is defined by its number of protons.

Answer:

hydrogen peroxide is a compound

A molecule must be a pure substance hence the correct answer is " All molecules are pure substances."

A pure substance is one which contains only one element or compound. A molecule is the smallest unit of a compound that can exist independently.

When we refer to a molecule of a compound, we are referring to that pure substance that contains only the element(s) that compose the compound.

Hence; All molecules are pure substances.

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Answer:

The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.

all these element are my favourite element .......

Answer:

I think CH2

Explanation:

I am not so sure

C H

×

2 1

Answer:

density = m÷V

= 116÷33

= 3.5151515151...

Answer:

3...... 1L = 1000ml

4. 1000g = 1 kg

Explanation:

mark me as brainliest ❤️

Answer:

15 meters = 590,551 inches

Answer:

An atom is composed of them

Explanation:

Answer:

Each element has a different amount of protons. Neutrons are responsible for combining with protons in the nucleus together to be held by the strong force. Too many neutrons in an atom will result in radioactive decay due to the neutrons' force overpowering the strong force. Electrons are the weirdest particles.

Explanation:

sorry if thats too much to read but i hope that helps :)

Answer:

Electron configuration is the structural arrangement notation of electrons in the shells or energy levels of an atom.

Explanation:

[tex]{ \sf{}}[/tex]

Answer:

gas pressure is caused when gas particles hit with the walls of their container the more often the particles hit with the walls and the faster they are moving when they do this the higher the pressure

Answer:

Name one very important thing that separates the Plant kingdom from all other kingdoms.

Explanation:

The entire question says:

"A rock with a mass off 44.18 grams is dropped into a gratued cylinder. The water level in the cylinder rises from 15.20cm³ to 21.72cm³."

a) Calculate the volume of the rock.

The volume of the rock is equal the difference between the water level with the rock and the water level without the rock. That happened because when you put the rock inside the cylinder, the volume of it has been increased, and the volume of the rock is the value that increased. So, let's do this account:

[tex]V_r[/tex] is the volume of the rock.

[tex]V_r=21.72 - 15.20\\V_r = 6.52[/tex]

[tex]d=\frac{44.18}{6.52}[/tex]

Therefore, the volume of the rock is 6.52cm³

b) Calculate the density of the rock.

To calculate the density of some material, we should divide the mass of the material by its volume. Below, you can see the formula:

[tex]\boxed{density=\frac{mass}{volume} }[/tex]

Now that we know about it, it is easier to solve our question. We just do this count. The volume is 6.52cm³ and the mass is 44.18g.

[tex]d=\frac{m}{v} \\[/tex]

[tex]d=\frac{44.18}{6.52}[/tex]

[tex]d \approx 6.78[/tex]

So, the density of this rock is approximately 6.78g/cm³.

I hope I've helped. ^^

Enjoy your studies!  \o/

Answer:

yes

Explanation:

Answer:

5H²O= 23

ZnCL²= 135

have a great day