can u please answer this for me

Answer:

Absorbs, Releases

Explanation:

The formation of an ionic compound involves the transfer of electrons. The removal of one or more electrons from a metal is a process that absorbs energy, whereas the addition of one or more electrons to a nonmetal releases energy.

Answer:

Absorbs

Release

Explanation:

The formation of ionic compounds occurs between two kinds of atoms having a large electronegativity difference (Δx ≥ 0.7) e.g metals (like those in group IA and IIA) and non-metals(like those in groups VIA and VIIA). The formation of an ionic bond involves the transfer of electron(s) from the less electronegative atom (metal) to the more electronegative atom (non-metal) such that the two kinds of atoms now have a completely filled outer shell like the noble gas.

Answer:

metal

Explanation:

Explanation:

Moles of Barium hydroxide = 0.156dm³ * (0.247mol/dm³) = 0.0385mol.

Mass of Barium hydroxide = 0.0385mol * (171.346g/mol) = 6.60g.

Answer:

6.60

Explanation:

Answer:

5

Explanation:

Answer:

Igneous rock to metamorphic rock

Metamorphic rock to igneous rock

Sedimentary rock to metamorphic rock

Explanation:

In changing a rock through the listed processes heat is highly required.

Transformation from a rock to igneous rocks requires the most heat because the rock body must be molten.

Answer:

[tex]\boxed {\boxed {\sf 0.0018 \ mol \ H_2 O }}[/tex]

Explanation:

First, we need to find the molecular mass of water (H₂O).

H₂O has:

Use the Periodic Table to find the mass of hydrogen and oxygen. Then, multiply by the number of atoms of the element.

There are 2 hydrogen atoms, so multiply the mass by 2.

Now, find the mass of H₂O. Add the mass of 2 hydrogen atoms and 1 oxygen atom.

Next, find the amount of moles using the molecular mass we just calculated. Set up a ratio.

[tex]0.032 \ g \ H_2 O* \frac{ 1 \ mol \ H_2 O}{18.0152 \ g \ H_2 O}[/tex]

Multiply. The grams of H₂O will cancel out.

[tex]0.032 * \frac{1 \ mol \ H_2 O}{18.0152 }[/tex]

[tex]\frac{0.032 *1 \ mol \ H_2 O}{18.0152 }[/tex]

[tex]0.00177627781 \ mol \ H_2 O[/tex]

The original measurement given had two significant figures (3,2). We must round to have 2 significant figures. All the zeroes before the 1 are not significant. So, round to the ten thousandth.

The 7 in the hundred thousandth place tells us to round up.

[tex]0.0018 \ mol \ H_2 O[/tex]

There are about 0.0018 moles in 0.032 grams.

The mass of Copper deposited at the cathode : 0.296 g

Given

time = t = 10 min=600 s

current = i = 1.5 A

F = 96500 C

charge Cu=+2

Required

The mass of Copper

Solution

Faraday's Law

[tex]\tt W=\dfrac{e.i.t}{96500}[/tex]

e = Ar/valence(valence Cu=2, Ar=63.5 g/mol)

Input the value :

[tex]\tt W=\dfrac{63.5/2\times 1.5\times 600}{96500}\\\\W=0.296~g[/tex]

Answer:

hope this helps!

Answer:

Explain both aldehydes and ketones, the geometry around the carbon atom in the carbonyl group is trigon planar; the carbon atom exhibits sp2 hybridization. Two of the sp2 orbitals on the carbon atom in the carbonyl group are used to form σ bonds to the other carbon or hydrogen atoms in a molecule. The remaining sp2 hybrid orbital forms a σ bond to the oxygen atom. The hybridized p orbital on the carbon atom in the carbonyl group overlaps a p orbital on the oxygen atom to form the π bond in the double bond.ation .

Answer:

b. 1foot

Explanation:

im not that sure but hope this helps !! happy holidays!!

I believe that the answer is C

Answer:

ture

Explanation:

trees, plants is what keeps us alive

B. Kids should go to school for 12 years.

Scientific statements are those statements that must be falsifiable which means that able to be proven false while on the other hand, tautology is a statement that is true. The sun revolves around the earth” is an example of scientific statement because this statement can be falsifiable in the light of evidences and researches. Hypothesis is a statement that may be true or false. We can verify it by doing experiments.

So we can conclude that option B is the sentence that represents a scientific statement.

Learn more about scientific here: https://brainly.com/question/17216882

#SPJ1

Answer:

c.  

Fluorine

Explanation:

Answer:

Ooo gas laws! fun! the answer is B, 1600 kPa

Explanation:

Here are some key things to remember:

- to convert Celsius to Kelvin add 273

Answer:c is correct

Explanation:

Answer:

2,8,1

Explanation: This is the number of electrons sodium has on each electron shell

There are 1825.6 g in a 14.5 moles Lithium permanganate

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass :

[tex]\tt mol=\dfrac{mass}{MW}[/tex]

moles of Lithium permanganate = 14.5

Lithium permanganate (LiMnO4) MW=125.9 g/mol, so mass :

[tex]\tt mass=mol\times MW\\\\mass=14.5\times 125.9~g/mol\\\\mass=1825.6~g[/tex]

Explanation:

Nuclear energy is found in the nucleus of an atom holding nuclear materials in place.

When a nuclear decay or fusion occurs, the energy is released.

Answer:

A través del Experimento de Rutherford.

Explanation:

El experimento de la lámina de oro fue realizado en 1909 por Ernest Marsden y Hans Geiger bajo el liderazgo de Ernest Rutherford. En este experimento, se bombardeó una lámina de oro con partículas alfa y se detectó su dispersión. Se encontró que una pequeña proporción de las partículas regresan cerca de la fuente. Estos resultados fueron la base para el lanzamiento de un nuevo modelo atómico con un núcleo central cargado positivamente y con electrones cargados negativamente con pequeñas masas en relación con el núcleo y distribuidos a su alrededor.

Answer:

A. It is the ratio of the concentrations of products to the concentrations of reactants.

Explanation:

The equilibrium constant of a chemical reaction is the ratio of the concentration of products to the concentration of reactants.

This equilibrium constant can be expressed in many different formats.

Answer: A

Explanation:

a p e x

The answer i got was C so I would pick C

Answer:

C) carbon dioxide and hydrigen

Answer:

18.2 g.

Explanation:

You need to first figure out how many moles of nitrogen gas and hydrogen (gas) you have. To do this, use the molar masses of nitrogen gas and hydrogen (gas) on the periodic table. You get the following:

0.535 g. N2 and 1.984 g. H2

Then find out which reactant is the limiting one. In this case, it's N2. The amount of ammonia, then, that would be produced is 2 times the amount of moles of N2. This gives you 1.07 mol, approximately. Then multiply this by the molar mass of ammonia to find your answer of 18.2 g.

Answer: that should be true if not look it up :)

Explanation:

Explanation:

Thermal energy is the transfer of energy from one object to another as a result of difference in their temperature. The direction of the transfer is from a hot body (higher temperature) to a cold body (lower temperature).

The transfer of this type of energy called heat is measured in joules,

Answer:

V = 44.83 L

Explanation:

Given data:

Volume of nitrogen gas = ?

Number of moles = 2.0 mol

Temperature = 0°C

Pressure = 1atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

0+273 = 273 K

1 atm× V = 2.0 mol × 0.0821 atm.L/mol.K × 273K

1 atm× V = 44.83 atm.L

V = 44.83 atm.L / 1 atm

V = 44.83 L

Answer:

Energy is neither created nor destroyed.

Explanation:

The law of conservation of energy states that energy can neither be created nor be destroyed. The total energy of an isolated system remains conserved. It never gets 0. It changes from one form of energy to other but never vanishes.

Hence, the correct option is (d) "Energy is neither created nor destroyed"