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alex41 [277]
3 years ago
5

What is the molar mass of CaCL2•2 H2O

Chemistry
1 answer:
kotykmax [81]3 years ago
6 0

Answer:

147 amu

Explanation:

CaCl2. 2H2O

=>40*1+35.5*2+2*1*2+2*16

=>40+71+4+32

=>147 amu..

I hope u will understand it:-):-)

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In the three-dimensional structure of methane, ch4, the hydrogen atoms attached to a carbon atom are aligned ________. in the th
Nikitich [7]
Answer:
            In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.

Explanation:
                   In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.

4 0
3 years ago
What is the Lewis structure for CH2NO2H
Irina-Kira [14]

Answer:

Please check attachment

Explanation:

Here in this question question, we are concerned with writing the Lewis structure for the given molecule.

The Lewis structure is simply using dots to represent electrons which are not involved in the bonding.

That is, we shall be using dots to represent the non-bonding pairs of electrons around the atoms which are central.

Please check the attachment for the diagram

5 0
2 years ago
Sodium chloride (table salt) in a water solution will dry to form crystals that we then identify
Andre45 [30]
The answer is Mineral,rock,sedimentary rock
4 0
3 years ago
Which quantity is held constant when working with Boyle's, Charles's, and Gay-Lussac's laws?
Komok [63]

Answer: moles

Explanation: Boyle's law:

Boyle's law stated that volume and pressure are inversely proportional to each others by keeping the number of moles and temperature constant.

Mathematical expression:

P₁V₁ = P₂V₂     (n and T are constant)

Charles's law:

Charles's law stated that temperature and volume are directly related related to each others by keeping number of moles and pressure constant.

Mathematical expression:

V₁/T₁ = V₂ /T₂   (n and P are constant)

Gay-Lussac's law:

This law stated that pressure of gas is directly related to its temperature by keeping the number of moles and volume constant.

Mathematical expression:

P₁/T₁ = P₂ /T₂   (n and V are constant)

7 0
3 years ago
Bonding atoms with similar electronegativity values form ____ bonds.
motikmotik
<h3><u>Answer;</u></h3>

Covalent bond

<h3><u>Explanation;</u></h3>
  • Bonding atoms with similar electronegativity values form covalent  bonds.
  • Covalent bond is a type of bond that forms as a result of sharing of eleetrons between atoms. It involves non-metal atoms.
  • Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons
  • <em><u>Pure covalent bonds result when two atoms of the same electronegativity bond.</u></em><em> This occurs only when two atoms of the same element bond with each other.</em>
  • <em><u>When the electronegativity difference is greater than 2.0, the bond is considered ionic.</u></em>
6 0
3 years ago
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