Can someone please help me on this ^ please

B:H ratio is 1:3

Explanation:

The empirical formula is BH₃.

If you have 100 g of the compound.

Then you have 78.14 g B and 21.86 g H.

Now, we must convert these masses to moles and find their ratios.

From here on, I like to summarize the calculations in a table.

Element  Mass/g    Moles     Ratio     Integers

    B          78.14      7.2285    1                    1

    H          21.86    21.686      3.0001          3

The empirical formula is BH₃.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

hope this contact me for more questions if you'd like: )