i need help with this asap pls help if you can. pls, don't take the points if you don't know.

Answer:

Mechanical weathering is usually caused by extreme hot and cold temperatures. Water seeps into cracks in rocks, freezes, and expands, causing further breakdown of rocks. Wind is another example of mechanical weathering.

Explanation:

Answer:

carbon dioxide i think

Explanation:

Answer:

C

Explanation:

When the electron is greater than proton the atom will be negatively charged.

So, 2-5= -3

Hope this helped you!

Answer: The covalent bonds within a molecule are very (strong). However it requires (less) energy to melt a molecular compound than an ionic compound.

This is because the attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.

The term chemical bond generally refer to the attractive force which holds the respective ions or atoms of a molecular substance. Bonding in the compounds helps to attain the stability.

A bond which is formed by the sharing of an electron pair among the atoms is known as the covalent bond. The concept of covalent bond was introduced by G.N Lewis in 1916.

An ionic bond is generally formed by the transfer of one or more electrons from one atom to another. In an ionic bond the positive and negative ions are held together by the electrostatic forces of attraction.

The ionic compounds have high melting and boiling points and in order to break the ionic bonds there is a need to supply large amount of energy than the covalent bonds. Thus ionic compounds are found to be stronger than the covalent compounds.

The covalent bonds within a molecule are (very strong) and it requires (less) energy to melt a molecular compound.  The attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.

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Answer:

Where are the following words.

Answer:

Didn't know the answer, sorry.

Answer:

Keq = 19

ΔG° = -7.3kJ/mol

Explanation:

Based on the chemical reaction:

Glucose 1-phosphate ⇄ Glucose 6-phosphate

The equilibrium constant, Keq is defined as:

Keq = [Glucose 6-phosphate] / [Glucose 1-phosphate]

Where [] are equilibrium concentrations of each substance

Replacing:

Keq = [0.19M] / [0.01M]

Keq = 19

Now, standard free energy change, ΔG° is defined as:

ΔG° = -RT ln K

Where R is gas constant 8.314J/molK

T is absolute temperature (25°C + 273.15K = 298.15K)

and K is equilibrium constant = 19

Replacing:

ΔG° = -8.314J/molK*298.15K ln 19

ΔG° = -7299J/mol

ΔG° = -7.3kJ/mol

Answer:

molar mass sodium chromate = 162g

12.6g ÷ 162g/mole = moles sodium chromate (This is the solute)

molalrity or M = moles solute ÷ lliters of solution (You'll have to change given mL to L)

Answer:

A. Atomic Number

Explanation:

The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.

Answer:

4

Explanation:

Given that:

a valence shell of an atom = 32 electrons. This seems to be an atomic element known as germanium. At the outer shell, the number of electrons for germanium is 4. Degenerate orbitals are usually known to be orbitals that possess the same energy.  According to the Aufbau principle, the electron filling of germanium (32 electrons) = [Ar]  4s² 3d¹⁰ 4p². So, the number of a degenerate atom of 32 electrons = 4

Answer:

water exposure because it extracts millennials which is a product

Answer:

Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. ... Objects with greater mass can have more kinetic energy even if they are moving more slowly, and objects moving at much greater speeds can have more kinetic energy even if they have less mass

Answer:

1.mass of Ag3PO4=4185.8g

2.mass of AgBr=6732g

Answer:

3 atoms

Explanation:

The number of atoms of the metal that would be required as it forms an anionic charge of -3 is 3 atoms.

Elements in group 1 generally have a charge of +1. They have a valency of 1

By the virtue of this;

 It will take 3 atoms of a group one element to combine with an anion with a -3 charge on it.

This way, the ionic bond forms and the compound becomes neutral.

i have no clue what so ever sorry

Answer:

22.35  

>:) now go show your science teacher you have the smart

Answer:

O, C,  Sn, Sr

Explanation:

As per the periodic table trends, atomic radius of an atom deceases from left to right and increases down a group this is so because across a period or from left to right, number of protons increases that increases the nuclear charge and nuclear radius decreases. Down the group, atomic radius increases because energy level increases and distance between nucleus and outermost orbital increases.

The elements in order from smallest to largest atomic radius are:

O, C,  Sn, Sr because as per the periodic table trends, oxygen (O) fall into right side of Carbon (C) in the periodic table and Strontium (Sn) and Tin (Sn) fall into down the group where Tin (Sn)  is on the right side of Strontium (Sn).

Hence, the correct order is "O, C,  Sn, Sr".

Answer:

Aphotic zone

Explanation:

Answer:

they will form a compound

Answer:

When lithium and bromine bond it makes lithium bromide.

Answer:

81.3 a

Explanation:

Just search up answers on wolframalpha.com

Answer:

A: False

Explanation:

B: True

C: part of earths mantle.

Answer:

That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 10 23 atoms, molecules, or formula units of that substance. In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.

Answer:

The molar mass of a substance is the mass (in grams per mole) of 6.022 x [tex]10^{23}[/tex] atoms, molecules, or formula units of that substance.

Explanation:

In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.

Answer:

Genetic variation

Explanation:

measure of the genetic differences that exist within a population. 

When a molecule is separated into its components it forms atoms as molecules are made up of same or different kind of atoms.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

is the process of water movement through a plant and its evaporation from aerial parts, such as leaves stems and flowers.

Answer:

well in easy terms... its just like the loss of water from the leaves or other parts of a plant due to evaporation

Explanation:

Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.

Answer:

B

Explanation:

Because the electrons are greater than the protons which makes the atom negative charged.

And when you minus 6-8=-2

Hope this helped!

The charge of an atom with 6 protons and 8 electrons is -2. Because the number of electrons dominates by 2 units.

Atoms in their neutral state have equal number of electrons and protons. Electrons are negatively charged particles and protons are positively charged particles.

Hence, all the positive charges are neutralized with equal number of negative charges. When atoms loss or gain electrons they gets charged and this charged atom is called ions.

When electrons dominates in number or atoms gain electrons they acquire negative charge and form anions. Similarly if atoms loss  electrons they form positive ions.

Here, the number of electron is 2 greater than protons. Hence the charge of the atom is -2.

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Explanation:

1) Einsteinium

2) Albert Einstein

Answer:

Einsteinium, Rutherfordium, Nobelium, Curium etc are some examples of elements named after scientists

Answer:

GAY-LUSSAC'S LAW.

Explanation:

P1 = 765 torr

T1 = 23°C = 296K

P2 = 560. torr

T2 = ?

(765 torr)/(296K) = (560. torr)/ T2

T2 = 226 K = -57°C

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore the new temperature is  -57°C. the law that is used over here is Gay-Lussac's Law.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Ideal gas is only for ideal gas.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

P1 = 765 torr

T1 = 23°C = 296K

P2 = 560. torr

T2 = ?

Applying Gay-Lussac's Law

(765 torr)/(296K) = (560. torr)/ T2

T2 = 226 K = -57°C

Therefore the new temperature is  -57°C. the law that is used over here is Gay-Lussac's Law.

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