3 years ago

Help me please !!!!!!8th grade science

1 answer:

6 0

The Correct option is E. Chemical energy to Mechanical energy.

You might be interested in

ivanzaharov [21]

The elements change from metals to nonmetals.

4 0

2 years ago

densk [106]

It is kept constant

There is the answer if it helped

5 0

3 years ago

Furkat [3]

Answer:

324.18 g/mol

Explanation:

Let the molecular mass of the antimalarial drug, Quinine is x g/mol

According to question,

Nitrogen present in the drug is 8.63% of x

So, mass of nitrogen = $\frac {8.63}{100}\times x$

Also, according to the question,

2 atoms are present in 1 molecule of the drug.

Mass of nitrogen = 14.01 amu = 14.01 g/mol (grams for 1 mole)

So, mass of nitrogen = 14.01×2 = 28.02

These 2 must be equal so,

$\frac {8.63}{100}\times x=28.02$

solving for x, we get:

6 0

3 years ago

Bond [772]

<span>What is the electron configuration of aluminum is </span>1s^2 2s^2 2p^6 3s^2 3p^1.

8 0

3 years ago

andrew11 [14]

Volume is 60 and the area is 94 have a great day

3 0

3 years ago