What’s the star made up of challenge?

Chemistry

1 answer:

Crank2 years ago

4 0

Answer:

Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements.Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores.

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Checking if my answer is correct: I got LARQY, but I'm pretty sure it's wrong. Can somebody please help?

babunello [35]

Answer:

you are right

Explanation:

and i do not need to explain it because you did

8 0

3 years ago

Which ionic compound is soluble in water pbbr2, fe (oh)3,ca(no3)2, baso4?

Anton [14]

Ionic compound are those compounds which are made up of ions. The ion which has tendency to loose electrons is said to cation (positive charge) such as metals whereas ion which has tendency to gain electrons is said to anion (negative charge) such as non-metals.

Calcium nitrate is quite soluble in water due to very low lattice enthalpy in comparison to other ionic compound. With lower lattice enthalpy, less energy is required for the dissociation of calcium nitrate and it get dissolves in water than other three compounds. Moreover, hydration energy is higher for calcium nitrate which make its solubility higher in water than other ionic species.

Thus, $Ca(NO_{3})_{2}$ is correct answer.