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zysi [14]
2 years ago
9

Topics: Fundamentals of electrochemistry; Electrochemical cells

Chemistry
1 answer:
irina1246 [14]2 years ago
5 0

Answer:

how to help people that helps

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What type of compound does the formula, CuCl2, represent?<br> a. ionic salt<br> b. covalent molecule
Rainbow [258]
The answer is:  [B]:  "ionic salt" .
___________________________________________________
Note:  There is no "sharing of electrons" among the elements in this compound; so this compound in NOT a "covalent molecule".

However, there is ionic bonding:  Cu²⁺ and  Cl⁻  ;  to form:  "CuCl₂" .
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7 0
3 years ago
In which set of elements would all members be expected to have very similar chemical properties?
zepelin [54]

Answer:

each group of the periodic table.

example group 7 - fluorine, chlorine, bromine, iodine, astatine, tennessine

6 0
2 years ago
How many grams of oxygen (O) are present in 0.0207 moles of Ca(HCO 3) 2
Zolol [24]

Answer:

1.99grams

Explanation:

- First, we need to calculate the molar mass of the compound: Ca(HCO3)2

Ca = 40g/mol, H = 1g/mol, C = 12g/mol, O = 16g/mol

Hence, Ca(HCO3)2

= 40 + {1 + 12 + 16(3)}2

= 40 + {13 + 48}2

= 40 + {61}2

= 40 + 122

= 162g/mol

Molar mass of Ca(HCO3)2 = 162g/mol

- Next, we calculate the mass of oxygen in one mole of the compound, Ca(HCO3)2.

Oxygen = {16(3)}2

= 48 × 2

= 96g of Oxygen

- Next, we calculate the percentage composition of oxygen by mass by dividing the mass of oxygen in the compound by the molar mass of the compound i.e.

% composition of O = 96/162 × 100

= 0.5926 × 100

= 59.26%.

- The number of moles of the compound, Ca(HCO3)2, must be converted to mass by using the formula; mole = mass/molar mass

0.0207 = mass/162

Mass = 162 × 0.0207

Mass = 3.353grams

However, in every gram of Ca(HCO3)2, there is 0.5926 g of oxygen

Hence, in 3.353grams of Ca(HCO3)2, there will be;

0.5926 × 3.353

= 1.986

= 1.99grams.

Therefore, there is 1.99grams of Oxygen in 0.0207 moles (3.353g) of Ca(HCO3)2.

5 0
3 years ago
How many atoms of oxygen are present in the reactants and products? 6CO2+6H2O-&gt; C6H12O6+6O2
REY [17]
6 Carbon atoms
18 Oxygen atoms
12 Hydrogen atoms
6 0
3 years ago
What makes bullet holes wider on the exit side of a piece of glass?
denpristay [2]
The rounded shape of the bullet because as it goes through the glass it stops spinning and this make the hole wider
6 0
3 years ago
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