Please help thank you (20 points)

Answer: 1.0324(g/ml)

We have the formula [tex]m = Vd[/tex]

Where m is the mass, V is the volume, and d is the density

Divide both sides by V, we get  [tex]d=\frac{m}{V}=\frac{19.1}{18.5} = 1.0324 (g/ml)[/tex]

Answer:

Kaleidoscope is an optical toy consisting of two mirrors at a particular angle. Some common uses of the kaleidoscope are: Kaleidoscope produces beautiful patterns that are used by fashion designers. A kaleidoscope is used as a toy for entertainment.

Answer:

Because it helps me connects other sciences to each other, such as biology, physics, geology, and environmental science. Basic knowledge of chemistry helps you to read and understand product labels. Chemistry can help you make informed decisions.

(Happpy to help!)

Answer:

Because chemistry class is very important.

Answer:

2.935 miles

Explanation:

because when you convert feet into miles, it all adds up

Explanation:

a) The ratio of the translational partition of D2 and H2 is 2.82

b) The ratio of the translational partition of xenon and helium is 187.56

Explanation:

a) The translational partition for D₂ is equal to:

Where

m = mass of molecule

k = Boltzmann constant

T = absolute temperature

V = volume of container

h = Planck constant

If rewrite the equation:

The same for the H₂ molecule:

Taking the ratio D₂ and H₂:

Where

mH₂ = 2.015894 amu

mD₂ = 4.028204 amu

b) The same way to part a)

Answer:

Is that you?

Explanation:

Properties of the Akali Earth Metals.

[tex] \\ [/tex]

Answer:

Density = Mass/Volume

= 2.45/5

Density= 0.49 g/ml

I lil one nice to meet you and how is your day

Answer:500 ml

Explanation:

M1 = 0.5

V1 = 100 ml

M2 = 0.1

V2 =??

M1 * V1 =M2 * V2

0.5 M * 100 ml = 0.1 M *V2

V2 =0.5 M * 100 ml /0.1 M

V2 = 500 ml

Answer:

The behavior of molecules in different phases of matter represents a balance between the kinetic energies of the molecules and the attractive forces between them. All molecules are attracted to each other. The molecules are in the solid-state. At higher temperatures, the kinetic energy of the molecules is higher.

Molecules are the various elements linked together and are present in the matter. The molecules in different phases of matter are represented by kinetic energies and attractive forces.

The kinetic molecular theory of matter elucidates the composition of the matter of particles of tiny size. The theory explains matter like gas, liquids, and solids.

The different states of matter explain the constant movement and negligible intermolecular force and volume of the particles. The particle matter is said to undergo elastic collision.

The molecules of solids have low kinetic energy whereas the molecules of liquids and gases show high kinetic energy as the particles are placed at larger distances.

Therefore, the state of matter affects the behavior of molecules.

Learn more about kinetic molecular theory here:

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Answer:

Brick

Explanation:

Answer:

Explanation:

Brick has a heat capacity of 840 J/kg degree Centigrade.

That means that if you have 1 kg of brick, you will need to add 840 joules of heat to get it to go up 1 degree C.

The heat capacity of iron is 450 J/kg (degree centigrade).

Brick has the higher heat capacity. Undefined in all of this is a joule. It is a work unit. The problem is that to define a joule accurately, you need to bring in a lot of other units. Content yourself by understanding that both the iron and the brick are measured in the same units -- Joules.

Answer:

Group1 elements will react with groupvi element in the ratio

1:2

Group ( 1 ) elements react with group ( vi ) elements​ in 1 : 2 ratios.  Group ( 1 ) elements are alkali metals and group ( vi ) elements are chalcogens.

A chemical element is a species of atoms, including the pure material made entirely of that species, that have a specific number of protons in their nuclei.

Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules. All living and non-living things are made up of elements, which are fundamental building blocks.

They serve as the universe's center. Elements make up every particle, no matter how little or large. The five primary elements that make up our body are carbon, hydrogen, oxygen, nitrogen, and calcium.

Thus, Group ( 1 ) elements react with group ( vi ) elements​ in 1 : 2 ratios.

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Hi, the answer is 3510g

Step-by-step explanation:-

We know that density of a substance tells us the mass of exactly one unit of volume of given substance. In this question,

Aluminium density = 2.70g/mL

So,

V = L x W x H = 1300 cm³ = 1300 mL

m = D x V = (2.70 / 1300) = 3510g

Answer:  A, 1.98x10^24 atoms of H

Explanation:  39.0 g of sulfur = (79.0g/32.1 g/mole) = 2.46 moles S

The balanced equation promises we'll get 2 moles H2O for every 3 moles  ofS, a molar ratio of (2 moles H2O)/(3 moles S)

(2.46 moles S)*[(2 moles H2O)/(3 moles S)] = 1.64 moles H2O

(1.64 moles H2O)*(6.02x10^23 molecules H2)/mole H2O)*(2 H atoms/H2O molecule) =  1.97x10^24 atoms of H

Answer:

A toxic, green, gaseous chemical element (symbol Cl) with an atomic number of 17.

Answer:

B

Explanation:

The number of moles of each reactant is equal, there by pressure has no effect on the chemical system. Pressure is constant

Answer:

In redox reactions, electrons are transferred from one species to another. If the reaction is spontaneous, energy is released, which can then be used to do useful work. To harness this energy, the reaction must be split into two separate half reactions: the oxidation and reduction reactions. The reactions are put into two different containers and a wire is used to drive the electrons from one side to the other. In doing so, a Voltaic/ Galvanic Cell is created.

Explanation:

When a redox reaction takes place, electrons are transferred from one species to the other. If the reaction is spontaneous, energy is released, which can be used to do work. Consider the reaction of a solid copper (Cu(s)) in a silver nitrate solution (AgNO3(s)).

he AgNO3(s) dissociates in water to produce Ag+(aq) ions and NO­­−3(aq) ions. The NO3-(aq) ions can be ignored since they are spectator ions and do not participate in the reaction. In this reaction, a copper electrode is placed into a solution containing silver ions. The Ag+(aq) will readily oxidize Cu(s) resulting in Cu2+(aq), while reducing itself to Ag(s).

This reaction releases energy. When the copper electrode solid is placed directly into a silver nitrate solution, however, the energy is lost as heat and cannot be used to do work. In order to harness this energy and use it do useful work, we must split the reaction into two separate half reactions; The oxidation and reduction reactions. A wire connects the two reactions and allows electrons to flow from one side to the other. In doing so, we have created a Voltaic/ Galvanic Cell.

Answer:

the relative molecular mass of hydrated iron (II) sulfate FeSO4.7H2O is 278.02

Explanation:

Answer:

C

Explanation:

Line graphs are better to show the relations between over time, as circle shows the amount or present of something in a cert time

Answer:

a

Explanation:

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Answer: lemonade with ice ?

Explanation:

Answer:

Most likely gas

Explanation:

Answer:

It well melt.While theother one will dry

Explanation:

Answer:

Correct answer is option (3) .

Explanation:

Hope it helpful....

Answer:

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Answer:

Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas     Explanation:   Its :

called evaporation, cools the surrounding area and produces the desired effect.