Someone help Match them

Answer:

Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus. Because opposite electric charges attract each other, negative electrons are attracted to the positive nucleus

Answer:

Covalent bonds

Explanation:

Answer:

Covalent bonds

Explanation:

Covalent chemical bonds involve the sharing of a pair of valence electrons by two atoms.

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Answer:

hi I dont see princess or sara but have a good day!

Answer:

Hola chica

¿Qué paso?

Dimelo

Answer: a) copy tissue

Explanation:

Tissue and cells in general get damaged, or just break down from wear and tear. So the cells divide to make up for this shortcoming, effectively replacing any broken parts with fresh new ones.

Answer:

a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Explanation:

Answer:  Convection current

Explanation:

Answer:

convection currents

Explanation:

A mountain ridge is a geological chain of mountains and/or hills

The diagram shows a convection current

Answer:

 2H₂   +   O₂  →   2H₂O

Explanation:

The expression of the equation is given as:

              _H₂   +   2O₂  →   2H₂O

Now for expression above,

                           Reactants                                          Products

H                              2                                                            4

O                              4                                                           2

to balance the equation, we use 2 moles of hydrogen gas and 1 mole of oxygen gas;

           2H₂   +   O₂  →   2H₂O

Answer:

10 hours

Explanation:

Answer:

10

Explanation:

The empirical formula and the molecular formula are the same : C₁₇H₁₉NO₃

Given

3.22 g of carbon, 0.300 g of hydrogen, 0.221 g of nitrogen, and the rest is oxygen.

Required

The empirical formula and then the molecular formula.

Solution

Mass of Oxygen = 4.5 - (3.22+0.3+0.221)=0.759 g

Mol ratio of elements C : H : N : O =

3.22/12 : 0.3/1 : 0.221/14 : 0.759/16 = 0.268 : 0.3 : 0.016 : 0.047

Divide by 0.016 :

16.75 : 18.75 : 1 : 2.9375 = 17 : 19 : 1 : 3

(C₁₇H₁₉NO₃)n = 285

(12.17+19+14+3.16)n = 285

(285)n = 285

n = 1

Then the empirical formula and the molecular formula are the same

Answer:

pauli exclusion principle states that no two electrons in the same orbital can have the same spin.

Explanation:

this means you can't have 2 up arrows or 2 down arrows in your box

When the tin atom is excited, then the tin atom absorbs energy. As a result, an electron in the 5s orbital jumps to the 5pz orbital.

The electron configuration exists in the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

When the tin atom is excited, then the tin atom absorbs energy. As a result, an electron in the 5s orbital jumps to the 5pz orbital.

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The specific heat of the substance  : c = 0.235 J/g  °C

Given

Heat absorbed by substance = 419.7 J

m = mass = 23.5 g

Δt = Temperature difference : 76 °C

Required

The specific heat

Solution

Heat can be formulated

Q = m.c.Δt

Input the value :

419.7 = 23.5 x c x 76

c = 419.7 : (23.5 x 76)

c = 0.235 J/g  °C

Answer:

Cohesive forces cause the water molecules to stick together with a lot of elasticity, allowing the water to function very much like a rubber into a material like a glass pitcher.

Intermolecular forces such as dipole-dipole forces, London dispersion forces exist between molecules and these depend on strength of electronegativity of molecule. Therefore, cohesive forces cause water molecules to stick to a material like a glass pitcher​.

Intermolecular forces of attraction is force of attraction that make two molecule come closer. Intermolecular forces of attraction is directly proportional to the electronegativity of the molecule.

Cohesive forces cause the water molecules to stick together with a lot of elasticity, allowing the water to function very much like a rubber into a material like a glass pitcher.

Therefore, cohesive forces cause water molecules to stick to a material like a glass pitcher​.

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Answer:

The answer would most likely be C

Answer:

Antioxidants such as vitamin C are preservatives by inhibiting the degradation of food by oxygen. Bulking agents such as starch are additives that increase the bulk of a food without affecting its taste.

Answer:

p=5.0g/cm³

Explanation:

density formula

p=m/v

And if im not mistaken the stone weighs 200grams

The Volume of the tube increases by 40

So

p=200/40

p=5.0g/cm³

Answer:

I believe it is Spruce, because of the shape of the leaves

Answer:

Explanation:

Spruce

Answer:

Ok 15 miles NO2 you need the salt and pepper trick so mix it add water sit in it when you get cold write down uh temperature then you need to get out or it may kill you when it starts to get cold then go to the y- axis then you need to ask your teacher for help after you do the y-axis

Answer:9%

Explanation:

Answer:

Thermal conductivity (often denoted by k, λ, or κ) refers to the intrinsic ability of a material to transfer or conduct heat.

Thermal conductivity is the ability to transfer heat.

Thermal conductivity is the measure of the capacity of a material to conduct heat. Materials with high thermal conductivity can transmit heat quickly, while materials with low thermal conductivity will transmit heat slowly or resist its movement altogether. Heat transfer is the movement of heat from one object or substance to another because of a difference in temperature. Heat can move by conduction, convection, and radiation.

The rate at which heat is transferred through a unit cross-section area of a material by conduction when a temperature gradient exits perpendicular to the area is known as thermal conductivity.

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Answer:

an ion is an element that carries either positive or negative charge. the example are cation which has a positive charge e.g H+ and anion which had a negative charge eg Cl-.

Answer:

Convection can only happen with liquids and gases.

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Answer:

N

Explanation:

the rest are metals. elements of group 1 and 2

Answer:

2

Explanation:

Silicon is one the elements found in nature and well positioned the periodic table.

It has an atomic number of 14 with an electronic configuration:

       1s² 2s² 2p⁶ 3s² 3p⁴

From this formula the orbital notation that represents the second principal energy level is 2.

The main energy level in which the orbital is located or the average distance of the orbital from the nucleus is the principal  quantum number.

It takes the number 1,2,3,4,5 e.t.c