Answer:
- First: element.
- Second: Compound.
- Third: element.
- Fourth: Compound.
Explanation:
Hello.
In this case, since elements are composed the same atom and compounds are composed by two different atoms, we can see that:
- First: it is an element as each sphere seems to be the same.
- Second: It is a compound as two different type of spheres are shown, white and black, considering each sphere is a different element.
- Third: it is an element because the spheres are equal, in fact, it is a diatomic element as two atoms are joined per molecule.
- Fourth: It is a compound as well since each molecule has two colored spheres and one white sphere, meaning that it has two different atoms per molecule.
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Hi Alex, thanks for asking a question here on Brainly!
We can figure how the fast the person is running by dividing the minutes by the seconds.
=
=
The person was running 18 km/hr. ✅
Hope that helps! ★ If you have
further questions about this question or need more help, feel free to comment
below or post another question and send the link to me. -UnicornFudge aka Nadia.
Answer:
13. D Hypothesis 14. A Analyze Matter, Solve Problems
Explanation:
This question is providing us with the chemical formula of a compound whose name in IUPAC convention is strontium hydroxide heptahydrate according to the following.
<h3>IUPAC nomenclature in hydrates</h3>
In chemistry, the IUPAC allows us to assign specific names for all the chemicals in the world, in order for them to be recognized all around the world and avoid common names which differ from region to region.
Thus, for the compound we are given, we see the presence of a cationic strontium ion and an anionic hydroxide ion, both accompanied by seven molecules of water, which makes it a hydrate.
In such a way, its IUPAC name will be strontium hydroxide heptahydrate, according to the both of the ions and the number of water molecules into it.
Learn more about hydrates: brainly.com/question/919417
On the asexual reproduction your supposed to drag down facts about it from above into its circle.
same thing for the sexual reproduction.
on the middle you're supposed to put it the things that asexual reproduction and sexual reproduction have in common or the same.
I hope this helps
please mark this as brainiest!
