Answer:
Energy can neither be created nor destroyed, but it does change its form. And not all forms of energy are usable and it gets dissipated as heat energy and sound energy. The energy that is wasted cannot be recovered.
Answer:
See explanation.
Explanation:
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3. In this case, according to the given question, it turns out possible for us to say that any chemical formula, for an ionic compound, has the cation (positive) on the left and the anion (negative) on the right; thus, since Mg is a metal, which tends to lose electrons and become positively charged whereas the Cl is a nonmetal, which tends to gain electrons and become negatively charged, we have the following:

4. In this case, since lithium is a metal, as well as magnesium, it is not possible for them to switch around their charges as they will not be bonded because they will be repelled rather than attracted because of their equal positive charges.
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There are 5 significant figures in this number because the zero counts and it comes after a number and on the right of the decimal point
These minutes are further divided into sixty parts called seconds. The words minute and second used in this context have no immediate connection to how those words are usually used as amounts of time. In a full circle there are 360 degrees. Each degree is split up into 60 parts, each part being 1/60 of a degree.
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Answer:
is the limiting reagent and
is the excess reagent.
Explanation:
To calculate the moles :

The balanced chemical reaction is:
According to stoichiometry :
3 moles of
require = 1 mole of
Thus 0.960 moles of
will require=
of
Thus
is the limiting reagent as it limits the formation of product and
is the excess reagent as it is left.