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yulyashka [42]
3 years ago
15

The smallest unit which maintains the physical properties of a compound is a(n) _____.

Chemistry
1 answer:
Luden [163]3 years ago
8 0
Molecule
The smallest unit in a compound is its molecule.
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how many grams of molecular oxygen (O2) is produced from 13.8 grams of calcium chlorate (Ca(ClO3)2)in the following chemical rea
olga2289 [7]

Answer:

6.72 g

Explanation:

Given data:

Mass of calcium chlorate = 13.8 g

Mass of oxygen produced = ?

Solution:

Chemical equation:

Ca(ClO₃)₂        →      CaCl₂ + 3O₂

Number of moles of calcium chlorate:

Number of moles = mass / molar mass

Number of moles = 13.8 g/ 206.98 g/mol

Number of moles = 0.07 mol

Now we will compare the moles of oxygen and  calcium chlorate.

                 Ca(ClO₃)₂         :            O₂

                      1                   :              3

                    0.07               :            3×0.07=0.21 mol

Mass of oxygen:

Mass = number of moles × molar mass

Mass = 0.21 mol × 32 g/mol

Mass = 6.72 g

3 0
3 years ago
In the combustion of ethane, what is/are the reactant(s)?
aleksley [76]
Reactant are those that combine or reacts to give products !!

so in combustion of ethane ; ethane and o2 are reactants so ... your answer is B !!
5 0
3 years ago
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What is the correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substa
masha68 [24]
N=V/Vm

n - the number of moles
V - the volume
Vm=22.4 L/mol - the standard molar volume of gas
8 0
3 years ago
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What does kinetic energy depends on
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The kinetic energy of an object depends on two factors: mass(m) and velocity(v). The mass of an object can be measured in kilograms(kg) and velocity of the object in meters per second(m/s).
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PHMWMHWPTYSM(15 points)
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Answer:

it's an example of a closed circuit

4 0
3 years ago
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