SOMEONE HELP ME PLEASE ILL GIVE BRAINLY

Answer:

yo m ok mama

Explanation:

tjdjsjsjsjwbebsbshsh

Answer:

here's your answer...

Explanation:

Full moon, also hey lol.

have a germ-free day.

Answer:

Neutral

Explanation:

A pH below 7 is acidic and a pH above 7 is basic, and a pH of 7 is neutral.

Answer:

Explanation:

before the reaction you have K=2 and Cl=4

after the reaction K=2 and Cl=2 so it does not follow the law of conservation

Answer:

Q = -811440 J

Explanation:

Given data:

Mass of oil = 2.76 Kg (2.76× 1000 = 2760 g)

Initial temperature = 191 °C

Final temperature = 23°C

Specific heat capacity of oil = 1.75 J/g.°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 23°C - 191 °C

ΔT = -168°C

Q = 2760 g ×1.75 J/g.°C  ×-168°C

Q = -811440 J

Negative sign show heat is released.

Fluorine's atomic configuration is (2,7). As it's charge is -1, it will have 8 electrons in it's outermost shell thus filling its octate. similarly, Sodium loses one electron.

There you go :)

Answer:

  dissolved

Explanation:

The figure shows sodium chloride is in solution. It gets that way by being dissolved.

Answer:

DNA, or Deoxyribonucleic acid, has three types of chemical component: phosphates, a sugar known as deoxyribose, and four nitrogenous bases which are:

-adenine

-guanine

-cytosine

-thymine.

Two of the bases, adenine and guanine, have a double-ring structure characteristic of a type of chemical called a purine.

Hope this helped,

Philip

Brainliest always appreciated! <3

Answer:

D. [tex] O^{2-}[/tex]

Explanation:

In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.

Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.

Oxygen has a total number of eight (8) electrons and as such the [tex] O^{2-}[/tex] is able to gain (receive) two (2) more electrons in order to have the same electron arrangements as the noble gas i.e an atom of neon that has a total number of ten (10) electrons.

Hence, [tex] O^{2-}[/tex] contains the same number of electrons as an atom of neon.

Ionic compounds are formed from metal and non-metal elements

The chemical formula of compounds (especially ionic compounds) can be determined from the charge of each ion.

Determination of the ionic charge of the constituent elements of the compound can be seen from the electron configuration to achieve stability according to the octet rule

The charge of each ion will be crossed in the compound

Aluminum bromide

Al³⁺ + Br⁻ ⇒ AlBr₃

Magnesium bromide

Mg²⁺ + Br⁻ ⇒ MgBr₂

Sodium sulfide

Na⁺ + S²⁻ ⇒ Na₂S

Sodium nitride

Na⁺ + N³⁻ ⇒ Na₃N

Answer: combustion causes a chemical reaction between nitrogen and oxygen in the engine.

Explanation:

Nitrogen oxides are produced in combustion processes, partly from nitrogen compounds in the fuel, but mostly by direct combination of atmospheric oxygen and nitrogen in flames. Nitrogen oxides are produced naturally by lightning, and also, to a small extent, by microbial processes in soils.

Answer:

when fuels are burned in vehicle engines high temperatures are reached. at these high temperature nitrogen and oxygen from the air combine to produce nitrogen

Answer:

You can make the ramp really steep and hold the marble at the top of it

Explanation:

The statement of two ways in which increase the potential energy that is "potential energy is declining, while its kinetic energy is rising. Due to friction, potential energy is also transformed into heat."

Potential energy is the energy stored in an object due to its location relative to some zero position, that objects can be compressed such as rubber bands, trampolines, and bungee cords are examples of potential energy.

A marble dropped at the top of the ramp seems to have more gravitational force than one discharged further down the ramp, and that potential energy is turned into kinetic energy when the marble is again dropped and begins to roll down the ramp.

Learn more about potential energy here

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Explanation:

Appearance, melting point, density, solubility, polarity

Answer:

Srry its so hard

Explanation:

Answer:

A and D

Explanation:

Answer:

B: Presence of ashes

Explanation:

Burning molecules turns them into other molecules

Answer:B

Explanation:

Answer:

6g/mL

Explanation:

Given parameters;

Mass of the unknown substance  = 18g

Volume of water before the mass is introduced  = 5mL

Volume of water after the mass is introduced  = 8mL

Unknown:

Density of the mass = ?

Solution:

Density is the mass per unit volume of a substance.

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

Mass is the amount of matter in a substance

Volume is the space occupied by a body

Volume of the body  = 8mL - 5mL = 3mL

Insert the parameters and solve;

             Density  = [tex]\frac{18g}{3mL}[/tex]   = 6g/mL

Answer:

I think its 6g or 16g but im pretty sure its 6g

Explanation:

Answer:

Metamorphic rocks form when heat and pressure transform an existing rock into a new rock. Contact metamorphism occurs when hot magma transforms rock that it contacts. Regional metamorphism transforms large areas of existing rocks under the tremendous heat and pressure created by tectonic forces.

Explanation:

Answer:

197.5pm

Explanation:

Given parameters:

Diameter of the atom  = 395pm

Unknown:

Radius of the atom  =?

Solution:

Radius is the half of diameter;

  Radius = [tex]\frac{diameter}{2}[/tex]

 Radius  = [tex]\frac{395}{2}[/tex]   = 197.5pm

Answer:

R- reactants

arrow- yields

p- products

Explanation:

The volume of NH₃ produced at STP : 0.237 L

Reaction

N₂ + 3H₂ → 2NH₃

1 mol = 6.02 x 10²³ particles

9.6 X 10²¹ molecules of Hydrogen, mol :

[tex]\tt \dfrac{9.61\times 10^{21}}{6.02\times 10^{23}}=1.596\times 10^{-2}~moles[/tex]

mol H₂ : mol NH₃ = 3 : 2

mol NH₃ :

[tex]\tt \dfrac{2}{3}\times 1.596\times 10^{-2}=0.0106[/tex]

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

The volume of NH₃ :

[tex]\tt 0.0106\times 22.4=0.237~L[/tex]

Answer:

Cells and tissue

Explanation:

Cells are the smallest functional units of all living things

Tissue is organic material from which organs and their bodily structures appear

The difference between naming ionic and covalent compounds is that, in ionic compounds the ending of the second element changes to -ide, but not in covalent compounds.

Ionic compounds are compounds that are formed by the by the transfer of electrons from a metal to a nonmetal. Covalent compounds are formed when electrons are shared between nonmetals.

For ionic compounds, the name of the second element(the nonmetal) often ends in -ide. For instance; sodium bromide, cesium oxide and potassium nitride. This does not apply when naming covalent compounds. The are named based on the subscripts of each element in the compound.

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