The correct answer is decomposers.
32.4moles
Explanation:
Given parameters:
Volume of solution = 9.54L
Molarity of solution = 3.4M
Unknown:
Number of moles of Na₂CO₃ = ?
Solution;
The molarity is the amount of substance or solute dissolved in a given solvent. It is the same as concentration.
To find the number of moles from the molarity, we use the expression below;
Number of moles = molarity x volume
Input the values;
Number of moles = 3.4 x 9.54 = 32.4moles
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The answer is
Physical properties: Properties that do not change the chemical nature of matter
Chemical properties: Properties that do change tha chemical nature of matter
Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. There are many more examples. Note that measuring each of these properties will not alter the basic nature of the substance.
Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force.
Answer:
0.00079
When you round 0.000789 to 2 significant figures you would get
0.00079
because the zeros are just place holders if they are right after the decimal and don't have other numbers between them
then 789 rounds up to 790, which is 79
Explanation:
Answer:
the mass number decreases by 4 and the atomic number decreases by 2