BRAINLEST ASAP 30 POINTS!
2 answers:
Answer: Option (a) is the correct answer.
Explanation:
An element is defined as the substance which cannot be broken down into simpler substances.
For example, a piece of sodium metal will contain only atoms of sodium.
Whereas a compound is a substance that contains atoms different elements which are chemically combined together in a fixed ratio by mass.
For example, sodium chloride and water () are both compounds as they both of them contain different atoms which are chemically combined.
Thus, we can conclude that 200 milliliters of water combined with sodium chloride is a mixture of two compounds.
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Answer:
Explanation:
The final answer has a different set of units. In particular, meters (m) changes to centimeters (cm). To make this change, you need to multiply the first value by proportions.
When writing these proportions, it is important that they are arranged in a way that allows for the cancellation of units. For instance, since m is located in the denominator, it must be located in the numerator of the conversion.
<u>Proportion:</u>
1 m = 100 cm
The full expression:
<h3>As you can see, the old unit (m) cancels out and you are left with cm in the denominator.
Answer : Option 1) nuclei of and nuclei of
only.
Explanation : Radiation is spontaneously emitted from nuclei of because this isotope of hydrogen is highly radioactive as compared to other isotopes of hydrogen namely; nuclei of
and nuclei of
.
They have much stable nucleus as compared to nuclei of .
The more it is unstable the more radiations will be emitted from its nucleus.