11/9/2020
Describe the types of possible
weathering that has occurred to
this boulder
Use vocab words to describe what
is happening

Mass of the water : 2.23 g

Heat

Q = m.c.Δt

m= mass, g

c = heat capacity, for water : 4.18 J/g° C.

ΔT = temperature

Q= 140 J

Δt = 75 - 60 = 15

mass of the water :

[tex]\tt m=\dfrac{Q}{c.\Delta T}=\dfrac{140}{4.18\times 15}=2.23~g[/tex]

Explanation:

1one electron and -1 for anions

2 O2- indicates an ion of oxygen having two extra electrons. I.e., since an oxygen atom normally has 8 protons and 8 electrons, this ion has 10 electrons (-10 charge) and 8 protons (+8 charge) giving it a charge of -2 (-10 + 8 = -2).

...

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

That's what google said.

Answer:

Mass can neither be created nor destroyed in a chemical equation, it  transfer from one to another form.

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

Answer:

im taking these points baby lol

Explanation:

i love you  <3

Answer:

Option C. Triple the number of moles

Explanation:

From the ideal gas equation:

PV = nRT

Where:

P is the pressure

V is the volume

n is the number of mole

R is the gas constant

T is the absolute temperature.

Making V the subject of the above equation, we have:

PV = nRT

Divide both side by P

V = nRT / P

Thus, we can say that the volume (V) is directly proportional to both the number of mole (n) and absolute temperature (T) and inversely proportional to the pressure (P). This implies that and increase in either the number of mole, the absolute temperature and a decrease in the presence will cause the volume to increase.

Thus, the correct option is option C triple the number of moles. This can further be seen as illustrated below:

Initial volume (V1) = 12 L

Initial mole (n1) = 0.5 mole

Final mole (n2) = triple the initial mole = 3 × 0.5 = 1.5 mole

Final volume (V2) =?

From:

V = nRT / P, keeping T and P constant, we have:

V1/n1 = V2/n2

12/0.5 = V2/1.5

24 = V2/1.5

Cross multiply

V2 = 24 × 1.5

V2 = 36 L.

Thus Option C gives the correct answer to the question.

Answer:

Al3+

Explanation:

Aluminium has an electronic configuration of 2, 8, 3 and the outermost valence electrons is +3 since it is a metal

Elements acquire positive or negative charges by losing or gaining electrons. The element which have 3+ charge among the options is boron (B) Hence, option B is correct.

Boron is 5th element in periodic table and it is classified into 13th group. Boron is a metalloid and shows properties intermediate to metals and non metals.

The electronic configuration of boron is K =2, N =3. Atoms lose or gain electrons as per their valency to become stable. According to octet rule atoms become stable when their valence shell get completely filled.

Boron have 3 electrons in its valence shell. If it donate these three electrons into an electronegative atom, its K shell become its valence shell and it is completely filled. Thus boron becomes stable.]

When atoms loses electrons they acquire positive charge and this charge is numerically equal to the number of electrons lost. Thus boron acquire 3 unit of positive charge by donating its 3 electrons. Hence, option B is correct.

To find more about boron, refer the link below:

https://brainly.com/question/2790945

#SPJ6

Your question is incomplete. But your complete question probably was :

Which element below would have a 3+ charge as an ion?

answer choices.

nitrogen (N).

boron (B).

silicon (Si).

argon (Ar)

Answer:

NaOH atomic mass is 39.977

pH is 11 due to dilution must be multiplied by 0.11 to find pH

39.977 x 0.11 = 0.43979 x 100%

43% pH

Explanation:

3)

Equation -

3F₂ (g) + 2AlBr₃ (s) → 3Br₂ (l) + 2AlF₃ ↓

4)

When sulphur dioxide gas reacts with oxygen then it forms sulphur trioxide gas.

Equation -

2SO₂ (g) + O₂ (g) → 2SO₃ (g)

Answer:

C6 H12 O6 +6 O 2 → 6 CO2 + 6 H2 O

Answer:

3 valence electrons

The element with the atomic number 113 would fall in the 13th column of the periodic table Group IIIA. This group has an electron configuration that would end as p1 , meaning there would be 3 valence electrons. The valence electrons are the electrons found in the highest energy level in the s and p orbital.

Explanation:

Nihonium has to be the #113 element of the periodic table

A. is the correct answer because Boron has 3 electrons too,

All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum.

Boron element would have properties most similar to the new element. Therefore, option (A) is correct.

The chemical properties of elements depend on the number of valence electrons in their valence shell. Elements in the same group in the modern periodic table have the same number of valence electrons. Therefore, chemical elements situated in same group of the modern periodic table have similar chemical behavior.

The chemical elements having an identical outer electronic configuration in their atoms are placed in the same group of the periodic table. These valence electrons of an element are responsible chemical behavior and reactivities of the elements.

Therefore, both Boron and a new element with atomic number 113  have three electrons in their valence shells. So they belong to the same group and will have similar chemical properties.

Learn more about elements with similar chemical behavior, here:

brainly.com/question/5364617

#SPJ2

Answer:

B. vibrate rapidly

Explanation:

Mark above answer as BRILLIANT

Answer:

Comrades it's B

Explanation:

You can trust me or not but it will be your fauit if you fail so i say trust me comrade. Glroy to Alpha!

A molecule's shape greatly influences the polarity of the compound, the molecular structure has an impact on molecular characteristics. The shape of a molecule affect the molecule's function. Therefore, option B is correct.

Based on the environment, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds.

Molecule shape play a key role in anticipating how one molecule may interact with another, as well as in determining macroscopic features like melting and boiling points.

Polar substances have higher boiling and melting temperatures, tend to dissolve in other polar compounds, and can either form solids or liquids.

Thus, option B is correct.

To learn more about the molecule, follow the link;

https://brainly.com/question/19556990

#SPJ5

Answer:

A. is the correct answer because Boron has 3 electrons too,

All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum.

Explanation:

Emerald is defined by its green color. To be an emerald, a specimen must have a distinctly green color that falls in the range from bluish green to green to slightly yellowish green. To be an emerald, the specimen must also have a rich color.

Answer:

Examples 1, 3 and 4

Explanation:

An unexcited atom is an atom in the ground state i.e the atom has it's valence electrons in it's lowest energy level possible. This actually implies the normal electronic configuration of the atom. Thus, examples 1, 3 and 4 have the actual electronic configuration with there valence electrons in the lowest possible energy level.

Example 1: 1S² 2S² 2P⁴

Example 3: 1S² 2S² 2P⁶ 3S¹ (There seem to be a mistake in the question provided, P energy level can only 6 electrons not 8)

Example 4: 1S² 2S² 2P⁶ 3S¹

NOTE: If you take a look at example 2, it will be deduced that the 3P energy level has only 3 valence electrons and the last valence electron jumped to 3d energy level; making that atom appear to be in it's excited state.

eating healthy foods

working out and eating healthy helps

Answer:

higher as

beacause having  a healthy diet inproves

your health

Explanation:

Answer:

Hydrogen cannot have more than two electrons. Hydrogen bonds to only one other atom at a time.There are too many electrons in the final structure.

Explanation:

Answer:

Explanation:

Hydrogen cannot have more than two electrons. Hydrogen bonds to only one other atom at a time. There are too many electrons in the final structure.

Explanation:

18

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered.

Answer: Nuclear fusion is a nuclear reaction where atomic nuclei of a low atomic number fuse to form a heavier nucleus releasing energy.

Explanation:

Answer:

Answer is Alveoli

Hope it helps.... plz mark as brainliest

Answer:

3 electrons comrade

Explanation:

Answer:

Oil- nonpolar

Sugar- polar

Salt- Polar

Dish soap- It is both polar and nonpolar

Explanation:

a) so they will remain separate from molecules of a polar solvent such as water

b) Sugars are polar due to their -OH groups, and dissolve readily in water by forming many hydrogen bonds.

c)At the molecular level, salt dissolves in water due to electrical charges and due to the fact that both water and salt.

d) Soap molecules have both properties of non-polar and polar at opposite ends of the molecule.

Answer:

Deep inside Earth, between the molten iron core and the thin crust at the surface, there is a solid body of rock called the mantle. When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, volcanoes erupt.

Explanation: hot molten rock, ash, and gases escape from the volcano

Answer:

3 x 10^9

Explanation:

Answer:

false

Explanation: