help pls now now now

Answer:

unsafe, solar

Explanation:

A lunar eclipse covers the moon which is safe to look at. New Moon, again is simply the moon. However, we should never look at the sun, eclipsed or not!

Answer:

C, it is unsafe to view solar

without eye protection

El fragmento es un ejemplo de metáfora porque presenta la relación entre la idea de los ojos de Platero con el clima soleado y lluvioso.

Metáfora es un término de origen griego que se refiere a la acción de traslación. En el lenguaje, una metáfora es una figura retórica que consiste en la asignación de un concepto o expresión a una idea sin que esta se relaciones directamente con esta definición.

De acuerdo a lo anterior, en el fragmento se presenta una metáfora en la que se relacionan los ojos de Platero con las horas de sol y lluvia.

Nota: Esta pregunta está incompleta porque el fragmento está incompleta. Aquí está el fragmento completo.

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Answer:

true.

Explanation:

Zn(s) + 2HCI(aq)=H2(g)+ZnCl2(g)

Explanation:

atomic no. is 42

chemical symbol is Mo

no. of protons is 42

atomic mass is 95.95

no. of electrons is 42

no. of electron in outer most shell is 1

no of electrons in the n 3 shell is 18

no. of neutron is 96

The element molybdenum is 42nd element in periodic table with the symbol Mo and  a mass of 96. It have 42 electrons and 42 protons.

Molybdenum (Mo) is a transition metal in periodic table included in the d-block. The atomic number of molybdenum is 42 which is the number of protons and electrons in it.

The atomic number of a neutral atom is equal to the number of electrons in it. For a neutral atom the number of electrons and protons are equal and thus the number of both electrons and protons in Mo is 42.

Mass number is the sum of number protons and neutrons in an atom. The mass number of Mo is 96 and number of protons is 42. Thus, the number of neutrons is 96 -42 = 54.

The outer shells of Mo are 4d and 5s containing 4 and 2 electrons respectively. Thus the number of outer electrons is 6.The level n= 3 is M shell which contains 18 electrons for Mo.

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Answer:

A chemical reaction is a process where two different substances or elements are mixed together. They then undergo some sort of chemical change to become a different substance altogether.

Explanation:

Answer:

hrjfnd

Explanation:

hfhdhfujduejdjdjdbfudbdjdbdifhdudjdufb

oh its a Chlorine isn't it....

it's electronic configuration is

2,8,7

so to make it 8 in its outermost shell it should gain 1 electron...

Answer:

I would go with the first option. It shows how people having been releasing more and more carbon dioxide into the atmosphere.

Explanation:

Answer:

Protons Neutron Electrons

hydrogen-1 1 0 1

hydrogen-2 1 1 1

hydrogen-3 1 2 1

Explanation:

hydrogen-1, hydrogen-2, and hydrogen-3 are all isotopes.

Isotopes have the same number of protons but a varying number of neutrons. Protons = Electrons.

Answer:

b

Explanation:

mark me as brainliest have a great day

Answer:

nnnnnnnnnnnnnnnnnnnnnn

Explanation:

jhhhhhhhhhhhhhhhhbhhhh

Answer:

solids

Explanation:

because in ice for instance the molecules and atoms are shivering so the move fast to stay warm

Answer:

lll and ll

Explanation:

Answer:

A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.

Answer:

A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.

Explanation:

Hope I helped!

Answer:

Mass, volume, width, height, etc.

Explanation:

Extensive properties depend on the amount of material where intensive properties (color, luster, taste, odor, density, temperature, melting/boiling point) don't.

Answer:

1 colonists

2 England

3 slaves

4 the House of Burgesses

Answer:

:)

Explanation:

There are 75 grams in 2.5 moles of dicarbon hexahydride (C₂H₆).

The given parameters;

The molecular mass of dicarbon hexahydride is calculated as follows;

Mw = C₂H₆ = (2 x 12) + (6 x 1)

Mw =30 g/mol

The mass of the dicarbon hexahydride in the given number of moles is calculated as follows;

mass = n x Mw

mass = 2.5 x 30

mass = 75 g

Thus, we can conclude that there are 75 grams in 2.5 moles of dicarbon hexahydride (C₂H₆).

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Answer:

E- Electrical

Explanation:

It converts mechanical energy to electrical energy

Answer:

CYTOPLASM

Explanation:

MOST REACTION REQUIRE WATER TO OCCUR

SINCE ENZYME WORK BEST WHEN DISSOLVED IN WATER

WATER IS PRESENT IN CYTPLASM HENCE IT IS MAIN SITE OF MEABLIC REACTIONS

Answer: Ovalbumin (Albumin)

Explanation:

The albumen (egg white) is composed of almost 60% of the protein ovalbumin. It's the main source of proteins for tissue synthesis in the embryo. It acts as a storage protein, storing ions and amino acids necessary for embryonic development.

There are four different proteins present in egg white. In which the most abundant protein is ovalbumin present in 54 %.  

Proteins are biomolecules very essential for life. Proteins are made of a number of amino acids.  Amino acids join together to form peptides and large number of peptides constitute a protein.

Essential amino acids have to be up taken from diet and non-essential will be produced inside the body.

Proteins are the major substances to build up our body. There are essential and non essential amino acids. Nails and hair are made of keratin protein. Milk contains the protein called lactine.

Similarly the protein in curd is casein. The proteins in egg white are ovalbumin, ovotransferrin, ovomucin and ovomucoid. In which ovalbumin is most abundant.

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Answer:

I believe your answer is B.) I hope this helps.

Answer:

No change...

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.

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Sulfuric acid reacts violently with alcohol and water to release heat. It reacts with most metals, particularly when diluted with water, to form flammable hydrogen gas, which may create an explosion hazard. ... Hazardous decomposition products are as follows: sulfur dioxide, sulfur trioxide, and sulfuric acid fumes.

it acts violently with water or alcohol to release some heat, it does react to most metals, mostly when diluted with water to form flammable hydrogen gases, which may create an explosion hazard.

(i tried to make the g00gle answer less complicated) :)

Explanation:

The nomenclature of ionic compounds is given by:

1. Positive is written first.  And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

1.)  : Calcium chloride  (Correct)

In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.

2.)  : Copper (II) oxide   (Incorrect)

In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.

3.)  : Lead (II) sulfide   (Incorrect)

In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.

Explanation:

It is known that an electron pair represents a domain. Hybridization of BF_{3}BF3 will be calculated as follows.

       Hybridization = \frac{1}{2}[\text{Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge}]21[Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge]

Valence electrons of boron are 3 and no. of bonded atoms in a BF_{3}BF3 molecule is 3.

Therefore, calculate hybridization of BF_{3}BF3 as follows.

          Hybridization = \frac{1}{2}[\text{Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge}]21[Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge]

                              = \frac{1}{2}[3 + 3 + 0]21[3+3+0]

                               = 3

Hence, hybridization of BF_{3}BF3 is sp^{2}sp2 , that is, trigonal planar.

Thus, we can conclude that the given image represents that it is a trigonal planar molecule with three domains.        

Answer:

electron pair => 1 covalent bond => same as H:H

Explanation:

The bar notation is generally accepted as a pair of electrons depicting a 'single' chemical bond. If two bars are shown (e.g; C=C) then two chemical bonds are represented. If three bars are shown (e.g; N≡N) then three chemical bonds are represented. This is the highest number of bonds that can exist between two elements. Hope this helps. :-)

Answer:

more than one kind of atom. a solution of atoms and molecules.​

Explanation:

a compound always contains more than one type of atom.

Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. Rather, it contains equal numbers of sodium ions with a charge of positive one (Na+) and chloride ions with a charge of negative one (Cl−).

Explanation:

Though both the molecules contain carbon and oxygen, the general difference between them lies in their number of oxygen of atoms carried by them; as carbon dioxide (CO2) has one carbon atom and two oxygen atoms, while carbon monoxide (CO) has one carbon and one oxygen atom.

Carbon Dioxide is naturally present in our atmosphere and as it is excreted out during the process breathing by the animals and humans. On the other hand, Carbon Monoxide is toxic, and it produces suffocation if it builds while incomplete combustion of coal, fossil fuels, etc.

In the layman language, both the terms are sometimes used interchangeably and create confusion. As they have few similarities and incorporates carbon and oxygen as well, and are the byproducts of the things which carry carbon like fuels, coals, woods, and natural gas.

We all are aware of the three states of matter, which are Solid, Liquid and Gas. In this context, we will be discussing the two most common gases present in our atmosphere, how they vary from each other, their effects and their similarities. These gases are Carbon Dioxide and Carbon Monoxide.

Answer:

The major similarities between molecules of carbon monoxide, diatomic oxygen and carbon dioxide is that they all exist in gaseous states in their natural forms. Each of them also have low molecular weight of less than 70g/mol.

The difference between them is that the carbon monoxide is formed from incomplete combustion and is a toxic gas while carbon dioxide is an end product of respiration and is used by plants for photosynthesis. Oxygen on the other hand is essential for respiration and is the end product of photosynthesis.

Carbon dioxide and Carbon monoxide look most alike as they have the same elements which include Carbon and Oxygen but only different in the number of atom composition

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