Summarize our current

Chemistry

1 answer:

WARRIOR [948]2 years ago

8 0

Answer:

Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different.Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

You might be interested in

How many millimeters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO3

KonstantinChe [14]

<span>So we need 0.276 moles of HCl to react. Your concentration is given in moles/liter so 0.276/1.58 = 0.174 liters needed or 174 milliliters</span>

8 0

4 years ago

Read 2 more answers

100 points! Formation of an Ion

djyliett [7]

$\huge\underline\pink {Answer}$

If every oxygen ion is combined with an aluminium ion has a charge of -2,the charge of each aluminum ion would be -3.

Uncharged Aluminum atom must need to lose it's electrons,in order to form the bond with oxygen which has vacant orbitals

ion

atom that has a positive or negative charge because it lost or gained one or more electrons

chemical bond

the attractive force that holds atoms or ions together

ionic bond

a chemical bond in which one atom loses an electron and the other atom gains electrons to form ions

chemical formula

a combination of chemical symbols and numbers to represent a substance

covalent bond

bond formed by the sharing of electrons between atoms

8 0

3 years ago

Read 2 more answers

Which of the following is a true statement?

BlackZzzverrR [31]

Answer:

its either all animals or only mammals. the thing with all animals is that they do have life cycles but not the same as like say humans or elephants, some are complicated.

6 0

2 years ago

If aluminum has a mass of 22.3 g, how many liters of oxygen gas are required at STP?

IceJOKER [234]

Answer:

27.8

Explanation:

6 0

3 years ago

Hydrofluoric acid is used to etch grooves in glass because it reacts with the silica (sio2(s)) in glass. the products of the rea

kvv77 [185]

Answer is: coefficient is one.
Chemical reaction: SiO₂ + 4HF → SiF₄ + 2H₂O.
Reaction is balanced when there are equal numbers of elements in both side of the chemical reaction.
HF - hydrofluoric acid, <span>highly corrosive, dissolves many materials.</span>
SiF₄ - silicon tetrafluoride.

6 0

3 years ago

Read 2 more answers