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fomenos
3 years ago
12

What do the arrows indicate ? A)plate movement. B)ocean flow. C)mid ocean ridge. D)continental drift.

Chemistry
2 answers:
ohaa [14]3 years ago
4 0

Answer:

continetal drift

Explanation:

stiks02 [169]3 years ago
3 0

Answer:

plate movement

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In the reaction of calcium with chlorine, which atom is oxidized? ca + cl2 -> cacl2
Rufina [12.5K]
Redox reactions consist of reduction and oxidation reactions
oxidation reactions are the giving out of electrons, the oxidation number of the species giving out the electrons increases during oxidation 
reduction reactions are taking in electrons and the oxidation number of the species taking in electrons reduces after reduction
in the reaction Ca + Cl₂ --> CaCl₂
oxidation numbers of Ca in Ca - 0 and CaCl₂ - +2
oxidation numbers of Cl in Cl₂ - 0 and CaCl₂ - -1
oxidation number of Ca has increased from 0 to +2 therefore Ca is oxidised
5 0
3 years ago
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 8.79 g of hydrated salt a
exis [7]

Answer:

3 water molecules

Explanation:

The molar ratio between CuSO₄ and H₂O needs to be calculated.

The mass of water that was removed by heating is calculated, then converted to moles. The molecular weight of water is 18.02g/mol.

(8.97 g - 6.57 g) = 2.22 g H₂O

(2.22 g)/(18.02g/mol) = 0.1232 mol H₂O

The moles of anhydrous copper sulfate are calculated. The molecular weight is 159.609 g/mol

(6.57 g)/(159.609 g/mol) = 0.04116 mol CuSO₄

Now the molar ratio between CuSO₄ and H₂O can be calculated:

0.1232 mol H₂O ÷ 0.04116 mol CuSO₄ = 3 H₂O / CuSO₄

4 0
3 years ago
Which of the following substances would best be measured using mole quantities?
galina1969 [7]
Molecules of water in the ocean
4 0
3 years ago
What are the horizontal (from left to right) parts of the periodic table called?
Setler [38]

Answer:

The correct answer is periods. See the explanation below, please.

Explanation:

The horizontal lines in the periodic table are called periods (ranging from 1 to 7) and vertical lines (ranging from 1 to 18).

The period that an element belongs to coincides with the last electronic layer of the element (that compound in period 3 will have 2 electronic layers).

8 0
3 years ago
Read 2 more answers
One orbit of the earth around the sun equals _____________ miles.
garri49 [273]

Answer:

it's about 580millon, but the closest you have is 595 million, so pick that one

4 0
3 years ago
Read 2 more answers
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