The atoms under this question can be found elsewhere and as follows:
chlorine (Cl) - 3.61
sulfur (S) - 2.58
hydrogen (H) - 2.2
oxygen (O)- 3.44
<span>fluorine (F)- 4
</span>
<span>Based on difference in electronegativities between atoms, the most polar bond pair would be hydrogen and fluorine. They have the highest electronegativity difference.</span>
Answer:
1.666
≈ 1.67 g/cm³
Explanation:
Mass = 200g
Length = 6cm
Width = 4cm
Height = 5cm
Density = Mass/ Volume
Volume = length×width×height
Density =
<u>Answer:</u> Temperature is the independent variable and amount of sugar in the solution is the dependent variable.
<u>Explanation:</u>
Dependent variable is defined as the variable whose value changes with respect to any other variable.
Independent variable is defined as the variable which remain as such and has no effect on the change of another variable. <u>For Example:</u> Time
Solubility is a property of substance to interact with the solvent particles. Thir property is dependent on temperature.
As, the temperature of the system increases, the solubility of the substance will increase and vice-versa.
Hence, temperature is the independent variable and amount of sugar in the solution is the dependent variable.
Answer:
- <em><u>% of calcium carbonate = 28.8%</u></em>
Explanation:
The <em>percentage </em>of a substance in a mixture is calculated with the formula:
- % of substance = (mass of substance / mass of mixture) × 100
In this case we have:
- mass of substance = mass of <em>calcium carbonate</em> = 1.73 g
- mass of<em> mixture</em> = mass of <em>calcium carbonate</em> + mass of <em>sodium carbonate</em> + mass of <em>magnesium sulfate</em>
- mass of <em>mixture</em> = 1.73 g + 2.34 g + 1.93 g = 6.00 g
Now you can substitute the values in the formula for percentage:
- % of substance = (1.73g / 6.00g) × 100 = 28.8%
It had to be a physical change unless there a chemical touching the metal surface making it a chemical change .