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Svet_ta [14]
1 year ago
6

True or false The density of a subsidence is always the same

Chemistry
2 answers:
Ronch [10]1 year ago
4 0
The answer is true that it right and that’s what I said
Veseljchak [2.6K]1 year ago
3 0
It is true the density of a substance is always the same
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In a chemical reaction, the difference between the potential energy of the products of the potential energy of the reactants is
Svetradugi [14.3K]
Your question looks a bit incomplete as you have the same contents in options a) and d). According to your list, I can't see the correct answer, but I can give you one.The difference between the potential energy of the products of the potential energy of the reactants is equal to the enthalpy of the reaction.
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Which answer best describes the potential energy diagram for a reaction that takes place in water, if the temperature of the sur
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D. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.

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What is the mass of 4.38 x 10^24 formula units of sodium chloride (NaCl)?
lana66690 [7]

Answer:

Mass = 427.05 g

Explanation:

Given data:

Formula units of sodium chloride = 4.38 ×10²⁴

Mass of NaCl = ?

Solution:

One mole contain formula units = 6.022 ×10²³

4.38×10²⁴ formula units × 1mol /6.022 ×10²³ formula units

0.73 ×10¹ mol

7.3 mol

Mass of NaCl:

Mass = number of moles × molar mass

Mass = 7.3 mol × 58.5 g/mol

Mass = 427.05 g

5 0
3 years ago
What is the meant by atomic radius
krek1111 [17]

Atomic radius defines the size of an atom.  

Explanation:

Atomic radius is defined as “one-half the distance between the nuclei of two identical atoms that are bonded together.” If ‘r’ is the atomic radius and ‘d’ the distance in between nuclei of two atoms that are identical and bonded, then r = d/2.

The units used to express atomic radius are picometer, nanometer, and Angstroms.

In the periodic table, the atomic radius of elements decreases with elements across a <em>period</em> (left-right) and increases with elements down a group.

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