Please solve these two QUESTION .
its my ASSIGNMENT ​

Explanation:

acid should be handled with caution because it is dangerous as it may burn the skin

Answer:

Photosynthesis

Explanation:

Answer:

eight electrons

Explanation:

Oxygen has atomic number eight. This means that the nuclei of all oxygen atoms have eight protons. A neutral oxygen atom will also have eight electrons. In an oxygen ion with a 2− charge, the number of protons is still 8, but the number of electrons is 10.

Answer:

of 160° F. Scrambled eggs need to be cooked until firm throughout with no visible liquid egg remaining.

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Answer:

144-158°

Explanation:

Answer:

double displacement reaction

Answer:

Explanation:

SEE THE IMAGE FOR SOLUTION

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HAVE A GREAT DAY

Answer:

2.935 miles

Explanation:

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

Answer:

Is that you?

Explanation:

Answer:

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

Answer:

Most likely gas

Explanation:

Taking into account the definition of ionization energy, the correct answer is option c: greater than 735 kJ/mol.

Electrons are held in atoms by their attraction to the nucleus, which means that energy is needed to remove an electron from the atom.

Ionization energy, also called ionization potential, is the necessary energy that must be supplied to a neutral, gaseous, ground-state atom to remove an electron from an atom. When an electron is removed from a neutral atom, a cation with a charge equal to +1 is formed.

The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.

The second ionization energy represents the energy required to start a second electron. Its value is always greater than the first ionization energy because the volume of a positive ion is less than that of the neutral atom and the electrostatic force is greater in the positive ion than in the atom.

In other words, the energy required to remove a second electron is called the second ionization energy, and due to the difficulty of removing an electron from a positive particle, its value is greater than that of the first ionization energy.

Finally,  the correct answer is option c: greater than 735 kJ/mol.

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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:

phosphoric

Explanation:

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Answer:

hydrochloric acid is a substance that is a binary acid .

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.

To learn more about element, follow the link;

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Answer:

C.

Explanation:

The arrows represent the Earth spinning on its own axis in this picture.

Answer:

Correct answer is option (3) .

Explanation:

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Answer:

The two ways to measure mass are subtraction and taring.

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:

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.

Properties of the Akali Earth Metals.

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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:

Lysosomes are predominantly found in eukaryotic animal cells and are responsible for breaking down cellular debris

Explanation:

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.

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:

Explanation:

Modern analytical chemistry can be defined as a science concerned with the development of general approaches, methods, and tools for the study of chemical compositions of substances and analysis of objects; chemical analysis is restricted to the acquisition of information about chemical compositions of substances.

Answer:

a

Explanation:

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