how is it d?explain please?! i do not understand.please dont guess

Answer:   This is an acid-base reaction (neutralization): Ca(OH) 2 is a base, CO 2 is an acid. ; White, odorless powder. [Note: Readily absorbs CO2 from the air to form calcium carbonate.]

Explanation:

Answer:

-113.2 kJ/mol

Explanation:

(-1207-285.8)-(-981.1-393.5)= -133.2

(Products)-(Reactants)= Answer

Answer:

O lowering the temperature of the system

A B C

a. Mg(12) 2.8.2 -2e- = Mg2+

b. S(16) 2.8.6 +2e- = S2-

c. MgS

d. No, because it is neutral

It should be noted that the maximum internal receiving temperature for fresh poultry is 41°F.

Temperature simply refers to the measure of hotness or coldness which is expressed in several scales. It's the manifestation of thermal energy in a matter.

It should be noted that the key to limiting the bacterial growth of food is to control the temperature. The maximum acceptable receiving temperature for fresh poultry is 5°C (41°F).

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Answer:

Same As.

Explanation:

Mass will not increase or decrease because matter is not created or destroyed. The Law of Conservation of Mass states that the mass of a system must remain constant throughout. Energy is conserved.

hmmm water

Explanation:

Water can change if you put food coloring

in it

Answer:

City Hall - directs necessary activities throughout the city

Explanation:

Answer:

Town Hall,

Explanation:

Explanation:

I don't think human beings will ever extinct

cause they are smart and adaptive

Q1. I don't know the future but I would say that Humans will not become extinct because of diseases and pandemics.

Answer:

mass= 206.4 g

Explanation:

Density= mass/volume

0.86=x/240

x=240×0.86

=206.4g

The density of butter is 0.86 g/cm³. 206.4g is the mass of 240 cm³ of butter. The phrase "specific volume" is occasionally used in thermodynamics to refer to a substance's reciprocal of its density.

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in metre-kilogram-second or SI units). For example, the density of air is 1.2 kilograms per cubic metre.

Density= mass/volume

0.86=x/240

x=240×0.86

=206.4g

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Answer:

5.00

Explanation:

because ignoring the pH solution part and doing the math it comes around to 1.0x5.0 which 1 times anything is itself so its 5

Answer:

vacuole

Explanation:

Brainliest please

Answer:

A. covalent bond

Explanation:

Hope this helps out!

Answer:

A. The number of atoms of bromine in 1 mol Br2

Explanation:

Hello?

In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules.

In Avogadro's constant/ number, we talk about atoms in 1 mol and not molecules. The solution will have also been C. But it is talking about molecules. Please bear in mind that molecules is based on grams that it an element contains overall.

I hope this helps. Have a nice studies.

Answer:

The answer is D.

Explanation:

Volume (V) = l x w x h

V = 4 x 5 x 1.2

V = 20 x 1.2

V = 24

Density = Mass/Volume  or D = M/V  

D = 85,000/24

D = 3541.66666666

Answer:

a) Diamond can indeed be set on fire since it is made of carbon. ... Although diamond requires a higher temperature to burn, it does indeed burn via normal carbon combustion. You can even burn diamond in a regular flame if you are patient and conditions are right.

b) In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.

c) Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

MARK ME AS A BRAINLIST PLZ

Answer:

a

Explanation:

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, the correct option is option A.

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

Along period, electronegativity increases. along group electronegativity decreases. The same trend is followed by  first ionization energy in periodic table.

Therefore, the correct option is option A.

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Answer:

a. friction

Explanation:

What is a common unbalanced force acting in motion? Common forces that are often unbalanced include the force of gravity and applied forces. When these forces are unbalanced, objects accelerate, change their position and find new configurations for which all forces are again balanced.

Friction is a kind of force.

Based on their definitions, electron affinity could be considered the opposite of electron affinity. This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons.

The electron is a subatomic particle with a negative one elementary charge electric charge. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles.

An electron is a negatively charged subatomic particle that can exist either free or bound to an atom (not bound). Along with protons and neutrons, electrons are one of the three primary types of particles that make up an atom. Together, protons, neutrons, and electrons make up the atom's nucleus.

This is the force required to remove an electron from an atom while it is gaseous, or the propensity of an atom to lose electrons. Conceptually, this is the polar opposite of electron affinity.

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The answer would be ionization energy

Answer:

gas and liquid ;-;

Explanation:

correct me if im wrong

Answer:

you will die because no air

Answer:

Explanation:

It' an example of photosynthesis and plants make oxygen and suger (glucose). Hope this helped

the burning of fossil fuels

Answer:

The acceleration of the car is 0.0273.

Explanation:

We can find this by using the acceleration formula which is:

a = ( vf - vi ) / Δt

a is acceleration.

vi is the initial velocity.

vf is the final velocity.

When we substitute into the equation we get. . .

a = ( 6.4 - 4.9 ) / 3

and when we solve this equation we get 0.02734

Hope this helps. . . <3

Answer:

Gale force winds, lightning strikes, temperature extremes and a deluge of snow, hail or rain. These combined forces break up the rocks and erode the peaks into their stark, sculpted forms.

Explanation:

what image? you didn't attach one.

Answer:

The same as on earth

Explanation:

mass is the amount of matter in an object and the mass of an object is always the same at any point in time

gravity will only have effect on the weight and not the mass.

so assuming the question was talking about the weight, then we can say the weight will be lesser on Mercury

Answer:

Allow substances to enter and leave the cell=Cell Membrane

Store water or fluids=Vacuole (vacuoles are much bigger in plant cells)

Powerhouse of the cell=Mitochondria

Produce protein=Ribosome

The cell ‘post office’ modify, sort and package protein=Golgi Bodies

Control the life process of the cell=Nucleus