Answer:
pressure
Explanation:
you have to use energy to apply pressure, so i mean....
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
</span>
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:
Model 1 represents the old geocentric model of the solar system and Model 2 represents the newer heliocentric model of the solar system.
Explanation:
Model 1 has earth in the center, therefore it is geocentric. the geocentric model of the solar system is old. Nobody believes in it anymore because it is scientifically inaccurate.
Model 2 has the sun in the center, therefore it is heliocentric. This is the newer model of the solar system.
Answer:
option C) Two liquids mixing to produce a precipitate.
this one is correct, because precipitate is only formed in a chemical reaction.
Answer:
342g/mol
Explanation:
Molar mass of carbon=12, hydrogen=1 and oxygen=16
therefore C12H22O11=12(12)+22(1)+11(16)
=144+22+176
=342g/mol
