Answer: 6.02 x 10^23
Explanation: Please look at the photo below for confirmation!
1. Gypsum has the formula as CaSO₄.2H₂O<span>. Hence, CaSO₄ is bound with two H₂O. CaSO₄ has 1 Ca atom, 1 S atom and 4 O atoms. 2H₂O have 4 H atoms and 2 O atoms.
Hence,
total Ca atoms = 1
total S atoms = 1
total O atoms = 4 + 2 = 6
total H atoms = 4
total number of atoms = 1 + 1 + 6 + 4 = 12
</span>2. Cellulose has the formula as C₆H₇O₂(OH)₃. But there are 2 molecules.<span> Hence, to find total atoms in each element, number of atoms should be multiplied by 2 .The elements of the cellulose are C, H, and O.
Hence,
total C atoms = 6 x 2 = 12
total O atoms = (2 + 3) x 2 = 10
total H atoms = (7 + 3) x 2 = 20
total number of atoms = 12 + 10 + 20 = 42
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3. The formula of the antiperspirant is Al₂Cl(OH)₅<span>. It has Al, Cl, O and H as the elements. Hence, the number of atoms in each element can be found as follows;
total Al atoms = 2
total Cl atoms = 1
total H atoms = 1 x 5 = 5
total O atoms = 1 x 5 = 5
total number of atoms = 2 + 1 + 5 + 5 = 13</span>
Answer:
1.38 moles
Explanation:
My teacher gave us the answer on a quiz so here if y’all want a explanation I’ll give y’all one tho
Answer: to melt ice= hydrogen bond must be broken, boiling of molecular bromine and the melting of solid iodine= dispersion force must be broken, and
dissociation of f2 into f atoms= covalent bond must be overcome.
Explanation:
(1).For the melting of ice, the hydrogen bond in ice is directional and linear. The Hydrogen bond in ice is as strong as covalent bond. Ice melts to form water that is the breaking of Hydrogen bonds plus the breakage of dispersion interactions.
Hydrogen bond is an electrostatic interactions between hydrogen atom that is bonded to a more electronegative atom for example, oxygen, Halogens and so on.
(2). and (3).;
For the boiling of molecular bromine and the melting of solid iodine and dissociate f2 into f atoms; iodine molecule is a non polar molecule,hence only dispersion force will be overcome. Iodine sublime because they have covalent bonds within the bonds.
To dissociate F2 molecule, the forces of the covalent bond must be broken.
Answer
Experimental - The Dogs With Toys
Control - The Dogs With No Toys
Explanation - Im smart
