Which of the following diagrams represents a single
replacement reaction?

Answer:

255 amu has relative abundance 67.5% and 257 has relative abundance 32.5%

Explanation:

Average atomic mass =sum of product of atomic mass and relative abundance all divided by hundred or total abundance

Answer:

Selenium

Explanation:

Answer:

its B, E, F

Explanation:

on edge 2021

Answer:

2. Doug supervises Jailers and makes sure their work meets standards.

5. Rudy monitors people who are on probation and parole.

6. Nancy guards inmates in a prison.

Answer:

One principle of the cell theory is that living things are made up of one or more cells.

Explanation:

Answer:

B

Explanation:

Because I said so

Answer:

the answer is  A  because  when something is going straight  it wont change unless its acted  upon by a force

Explanation:

Answer:

[tex]q=8\times 10^{-19}\ C[/tex]

Explanation:

Given that,

The charge of a single proton is [tex]1.6\times 10^{-19}\ C[/tex]

There are 5 protons in the nucleus. The nuclear charge of an atom of boron is given by :

[tex]q=5\times 1.6\times 10^{-19}\\\\q=8\times 10^{-19}\ C[/tex]

So, the required charge is [tex]8\times 10^{-19}\ C[/tex].

Answer:

R we gonna say what letter if were gonna say it its A

Explanation:

SBc Its Our Lesson Today In Science

Answer:

B.

Explanation:

Atoms make up molecules and ionic bonds cannot make up a molecule because they do not share electrons like in a covalent bond.

Answer:

Krypton. Atomic Mass. 83.80u. Electron Configuration. [Ar]4s23d104p6.

Atomic Mass: 83.80u

Electron Configuration: 4s23d104p6

Year Discovered: 1898

Answer:

The half-life of Th-232 is 1.4 ∙ 10¹⁰ years.

Answer:

D.CaCl2

Explanation:

Answer:

Answer:

ammonia 11

HCL. 2

sodium hydroxide 12

NAcl =7

ethanoic acid =3

Answer:

a

Explanation:

Answer:

0.17166666666

Explanation:

Answer:

New volume V2 = 1.7625 L

Explanation:

Given:

Old temperature T1 = 27°C = 27 + 273 = 300 K

Old volume V1 = 1.25 L

New temperature T2 = 150°C = 150 + 273 = 423 K

Find:

New volume V2

Computation:

V1 / T1 = V2 / T2

1.25 / 300 = V2 / 423

New volume V2 = 1.7625 L

Answer:

It becomes negative

Explanation:

protons carry a positive charge

neutrons carry a neutral charge

electrons carry a negative charge

if we add 2 more electrons, the charge of the ion becomes negative

thank you.

Answer:

yes they do because is it quite into te aspects of ciencia

Answer:

D. 3Mg + N2

Explanation:

magnesium nitride will decompose to form elemental magnesium and nitrogen gas

Mg₃N₂  → Mg + N₂

The reaction now needs to be balanced So that the number of Mg and N atoms in the reactants is equal to that of the products

Answer:

Fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay.

Answer:

q=m*c*•

Explanation:

•=50-2

m=25

c=4.18

q=?

use this

Explanation: Formula and structure: Calcium oxide chemical formula is CaO and its molar mass in 56.0774 g mol-1. The molecule is formed by the calcium cation Ca+2 and the oxygen anion O-2, which form a ionic bond. The calcium oxide ionic lattice is cubic and similar to NaCl lattice, with an ion surrounded by 6 opposite charge-ion.

Answer:

single displacement

Explanation:

Answer:

D

Explanation:

Answer:

D

Explanation:

Answer:

eyes

Explanation:

It is because the mouth, large intestine and stomach comes in the digestive system abd eyes doesn't.

HOPE THIS HELPS

Answer: C) Two elements that are in the area but not chemically combined can be a mixture

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Explanation:

An example of a mixture would be salt and water. The salt particles dissolve into the water but no chemical change has happened. I mean that no new chemical compound is made and also heat/energy is not given off. Furthermore, we can separate the two items (for instance through evaporation) and those two items retain their original properties. This helps show that the salt and water particles don't form a bond and we can separate those particles apart so to speak.

Another example of a mixture is iron and plastic. We can pull out the iron through using a strong magnet. Whether or not the iron is with the plastic, the iron retains its properties. The same can be said of the plastic. The two materials just happen to occupy the same space or volume or area.

If you have two chemicals react in some way to form a new chemical, then this is not a mixture. For instance if we combine vinegar and baking soda, it produces carbon dioxide and water. There isn't a process to undo this to get the vinegar and baking soda back (like there was a process to get the iron separated).

Answer:

Both similes and metaphors are a poetic device because authors can be seen using them while writing their poem to give the reader a deeper understanding of the character and the setting. Metaphor is a figure of speech that talks about one this but refers to another. On the other hand, a simile is a figure of speech that compares two things together. Usually using the work "like" or "as".

Hoped it helped! Have a great day!

Answer:

5SiO2 + 2CaC2 ➡ 5Si + 2CaO + 4CO2

Explanation:

This question involves balancing the above equation. An equation is said to be BALANCED when all the atoms of each element in the reactant side equates that in the product side.

According to this question, a chemical reaction is given as follows: SiO2 + CaC2 = Si + CaO + CO2. Based on observation, the atoms of elements are Silicon, oxygen, calcium and carbon are not the same on the reactants and products side. Based on this, the balanced equation is:

5SiO2 + 2CaC2 ➡ 5Si + 2CaO + 4CO2