What is carbon? What does it do?

Answer:

2Be + O2 = 2BeO

its a synthesis

Explanation:

Answer:

Lithium nitride. Trilithium nitride. 26134-62-3. Lithium nitride (Li3N) Li3N.

Answer:

Symbol: Sr2+

Element: Strontium

Explanation:

Strontium will have 38 protons, 38 electrons, and the neutron will depend on the isotope but there will usually be 48, 49, or 50 neutrons

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Answer:

Explanation:

IIA elements in the periodic table are the alkali earth metals

Answer:

molarity 0.1

Explanation:

mass of copper nitrate =2.4

no of moles exist in 120ml= 2.4/187.5=0.0128mole

molarity =.0.0128/.12=0.1m

Answer:

They collect all of the evidence for cases

Explanation:

Answer: 82.0 g/mole

Explanation:

Use the units to see that if we divide 1.64 grams by 0.0200 moles, we'll get a number that is grams/mole, the definition of formula mass.

1.64/0.0200 = 82.0 g/mole (3 sig figs)

We can't tell from this alone what the molecular formula might be, but C6H10 (cyclohexene) comes close (82.1 grams/mole).

The formula mass of the compound will be approximately 82.0 g/mol

The formula mass of the compound is the sum of atomic masses of all the atoms in its chemical formula. It is calculated by adding up the atomic masses of the individual elements in the compound, each multiplied by the subscript indicating the number of atoms of that element in the formula.

To find the formula mass of the compound, we'll use the relationship between moles, mass, and molar mass.

Molar mass (in g/mol) = Mass (in g)/Moles

Given:

Mass = 1.64 g

Moles = 0.0200 moles

Let's plug the values and calculate molar mass:

Molar mass = 1.64 g / 0.0200 moles

Molar mass ≈ 82.0 g/mol

The formula mass of the compound is approximately 82.0 g/mol, rounded to three significant figures.

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Answer:

it remains the same

Explanation:

mass is like name is not changed any where mass express the amount of matter in an object which is fixed any where regardless its gravity

The liquified (/molten) MgCl₂ dissociates into Mg²⁺ and Cl⁻ ions;

The Cl⁻ ions are drawn to the positive electrode (which has a deficit of electrons) where they deposit electrons since they are negatively charged;

This yields Cl atoms (these will form Cl₂ gas by covalent bonding and bubbles will be seen as this gas rises out of the liquid and it will enter the air);

These electrons will flow from the positive electrode to the negative electrode;

The Mg²⁺ ions, conversely, will be drawn to the negative electrode or cathode (which has a surplus of electrons partly from those the Cl⁻ ions lose) where they pick up electrons since they have a positive charge;

This yields pure magnesium.

The magnesium has been produced with the application of electric current for the production of ions that accumulate at the electrodes.

The setup has been for the electrochemical process. The sample in the molten state has been applied with the electric current. The current results in the dissociation of the sample into ionic constituents.

The opposite charge attracts negative charge. Thus, the negative ion moves towards the positive electrode, and negative ion move towards the positive electrode. The accumulation of ions has been obtained from the electrodes.

The magnesium chloride under the influence of electric field has been converted into the positive Mg ions and negative Cl ions. The positive Mg ion will move towards the negative electrode, and thus Mg has been produced.

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Answer:

no

Explanation:

it means melting or fusion so yhe answer is no

A substance changes from a solid to a liquid no its is not the formation of new substance. It is the change of state of the matter.

The states of matter can be defined as one of the several configurations in which matter can exist.

There are basically three states of matter.

Thus, a  substance changes from a solid to a liquid no its is not the formation of new substance. It is the change of state of the matter.

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Answer:

Ok

Explanation:

To solve this, we have to turn the moles into atoms:

2.5 moles/1 x 6.022x10^23 atoms/1 mole = 15.05 x 10^23 atoms

Answer: 15.05 x 10^23 atoms

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Silicon is the eighth most abundant element in the Universe. There will be 15.05 * 10²³ atoms in the silicon.

Silicon is the eighth most abundant element in the Universe; it is made in stars with a mass of eight or more Earth suns.

Near the end of their lives these stars enter the carbon burning phase, adding helium nuclei to carbon to produce oxygen, neon, magnesium and silicon.

1 mole contains  6.022x10²³ atoms.

2.5 mole contains = x atoms.

x= 2.5 moles/ 6.022x10²³ atoms.  

  = 15.05 x 10²³ atoms

Therefore, Silicon is the eighth most abundant element in the Universe. There will be 15.05 * 10²³ atoms in the silicon.

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Answer:

How to Write the Net Ionic Equation for H2SO4 + MgCO3 = MgSO4 + H2O + CO2 -

A net ionic equation also contains the spectator ions, whereas a net ionic equation just displays the chemical species that are involved in a process.

H₂SO₄ (aq) + MgCO₃ (s) →H₂O (l) + CO₂(g) + MgSO₄(aq)  

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The final pressure of the gas in the container is 4 atm

From the question given above, the following data were obtained:

Initial volume (V₁) = 4 L

Initial temperature (T₁) = 300 K

Initial pressure (P₁) = 1 atm

Final temperature (T₂) = 600 K

Final volume (V₂) = 2 L

[tex]\frac{P_{1} V_{1} }{T_{1}} = \frac{P_{2} V_{2}}{T_{2}}\\\\\frac{1 * 4}{300} = \frac{P_{2} * 2}{600} \\\\[/tex]

Cross multiply

300 × 2 × P₂ = 4 × 600

600 × P₂ = 2400

Divide both side by 600

[tex]P_{2} = \frac{2400}{600} \\\\[/tex]

Therefore, the final pressure of gas is 4 atm.

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4NH₃(g) + 6NO(g) → 5N₂(8) + 6H₂O(l)

The mole ratio of NO to NH₃ based on the balanced equation is 6 to 4 (or 3 to 2 in the simplest form)

Therefore in the reaction, there are ³/₂ more moles of NO than NH₃.

⇒ since moles of NH₃ = 2.45 mol  

   then moles of NO    =   2.45 mol × ³/₂  

                                     =   3.675 mol

Answer:

oxygen

Explanation:

cause thats what we need

Sodium chloride has the highest melting point while iodine has the least melting point.

The melting points of solid substances depends on the nature of intermolecular forces that exists in the substance. The stronger the magnitude of intermolecular forces in a substance, the higher its melting point.

The order of melting points of the solids shown in question is as follows;

Sodium chloride has the highest melting points because it is an ionic substance. Among the molecular sucrose and paraffin, sucrose has a higher melting point than sucrose because it has a greater molar mass. Iodine, a molecular substance has the least molar mass and the least melting point in the list.

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The picture that correctly shows the path of the reflected light ray is: Picture A.

A ray diagram can be defined as the graphical representation of the possible paths that a light wave takes from one point (source) to another.

Basically, some of the phenomenon and properties associated with light ray include the following:

A reflected light ray completely bounces off a surface and as such, light wave do not pass through the surface as illustrated in Picture A.

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Answer:

a chemical compound

Explanation:

copper(ii) chlorate is a chemical compound of the transition metal copper and the chlorate anion with basic formula cu(cio)3 and 2

Answer:

the answer is d

Explanation:

i know

Answer:

temperature

Explanation:

its in the book

Answer: agitation

Explanation:

The IUPAC name for N2O is nitrous oxide.

The IUPAC name with the full meaning (International Union of Pure and Applied Chemistry) is a system of naming chemical compounds by chemical scientists.

The given IUPAC name to N2O is nitrous oxide. Nitrous oxide is commonly known as the laughing gas is a colorless gas with a pleasant, sweetish odor and taste that, when breathed, causes placidity to pain.

Nitrous oxide has several medicinal applications due to its anesthetic and pain-relieving properties, and it can be given by Medical professionals.

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What is the IUPAC name for N2O?

B. dinitrogen monoxide

What is the common name for N2O?

D. nitrous oxide

Un elemento químico, o un elemento, se define como un material que no puede descomponerse ni transformarse en otra sustancia por medios químicos. Cada elemento se identifica según la cantidad de protones que tiene en su núcleo atómico. Se puede crear un nuevo elemento agregando más protones a un átomo.

_________

Espero eso ayude ⚜

ITZY :)

Answer:

1) 1.39 * 10²³ atoms

Explanation:

Answer:

the rule is V1/T1= V2/T2

so we convert the T1 from °c to kelvin

78+273.15= 351.15 k

1.60/351.15 = 0.425/T2

4.55 ×10-³ = 0.425/T2

then T2 = 93.40 kelvin

hence, we should decrease the temperature

[tex]\\ \sf\longmapsto Work=Force\times Displacement [/tex]

[tex]\\ \sf\longmapsto Force=\dfrac{Work}{Displacement}[/tex]

[tex]\\ \sf\longmapsto Force=\dfrac{2400}{6}[/tex]

[tex]\\ \sf\longmapsto Force=400N[/tex]