Answer:
Oxygen in heavy water, or d20, have an extra neutron, and it contains a higher portion of hydrogen. The extra neutron makes d20 (heavy water) about 10% denser than normal H20 (water).
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The question is incomplete, the complete question is;
when two colorless solutions of ionic compounds are mixed, and the final mixture remains colorless. What type of a change does this represent? Select from the options below The information provided is insufficient for determining the type of change Physical change because the absence of color change indicates that there is no change in chemical composition of the mixture B Chemical change because the absence of color change indicates that there is a change in chemical composition of the mixture
Answer:
The information provided is insufficient for determining the type of change
Explanation:
A chemical change is one in which new substances are formed. Chemical changes are not easily reversible and they are often accompanied by evolution or absorption of heat.
A physical change does not lead to the formation of new substances. It is easily reversible.
Change in colour alone can not tell us whether a physical or chemical change has taken place. This is because colourless, miscible substances may have been formed in the process hence the final mixture remains colorless.
It is also possible that the two solutions were merely physically mixed. This is a physical change,
Therefore, the information provided is insufficient for determining the type of change.
Volume of 100 drops: 0.43 dL
Explanation:
We can solve this question by applying the rule of three.
In fact, we know that:
- The volume of 1 drop of medicine is 0.43 mL, so the ratio between number of drops and volume (in mL) is 1 : 0.43
- Then we want to find the volume of 100 drops
So we can write the following equation:
where V is the volume of 100 drops.
Solving for V,
And keeping in mind that
1 dL = 100 mL
We can convert into deciliters:
Learn more about rule of three:
brainly.com/question/570757
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329.10 g is the mass of 1.59 moles of Ca(ClO3)2